TW201406092A - Method and apparatus for bit-rearrangement based relay forwarding - Google Patents

Method and apparatus for bit-rearrangement based relay forwarding Download PDF

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TW201406092A
TW201406092A TW102115910A TW102115910A TW201406092A TW 201406092 A TW201406092 A TW 201406092A TW 102115910 A TW102115910 A TW 102115910A TW 102115910 A TW102115910 A TW 102115910A TW 201406092 A TW201406092 A TW 201406092A
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bit
amplitude modulation
quadrature amplitude
modulation signal
rearranged
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TW102115910A
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Chinese (zh)
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Yan Meng
Gang Shen
Wei Ni
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Alcatel Lucent
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/06—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection
    • H04L25/067—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection providing soft decisions, i.e. decisions together with an estimate of reliability
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0045—Arrangements at the receiver end
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0078—Avoidance of errors by organising the transmitted data in a format specifically designed to deal with errors, e.g. location
    • H04L1/0086—Unequal error protection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/155—Ground-based stations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L2001/0092—Error control systems characterised by the topology of the transmission link
    • H04L2001/0097—Relays

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

The present invention provides a method for forwarding a multi-order quadrature amplitude modulation signal transmitted by a second device in a first device of a wireless communication system, comprising: receiving an initial multi-order quadrature amplitude modulation signal transmitted from the second device; decoding the signal to obtain an initial symbol sequence that contains at least one symbol, the symbol containing a bit sequence that comprises a front portion and a rear portion, wherein a reliability of a bit in the front portion is different from the reliability of a bit in the rear portion; rearranging the front portion and the rear portion of the bit sequence so that at least one bit in the rear portion is contained in positions corresponding to the front portion in the bit sequence of the rearranged symbol and at least one bit in the front portion is contained in positions corresponding to the rear portion; constituting a rearranged symbol sequence with the rearranged symbols; and encoding the rearranged symbol sequence to obtain a rearranged multi-order quadrature amplitude modulation signal and transmitting the signal.

Description

基於位元重排的中繼轉發方法和裝置 Bit-and-reorder-based relay forwarding method and device

本發明關於無線通信技術領域，尤其關於中繼協作傳輸領域。 The present invention relates to the field of wireless communication technologies, and more particularly to the field of relay cooperative transmission.

中繼協作傳輸技術，作為LTE的後續發展LTE-Advanced所確定的基礎功能之一，受到了普遍的關注。它的主要特點是能夠使難以採用多天線技術的移動終端獲得發送分集增益，由此克服衰落通道對無線通信系統的不良影響。 The relay cooperative transmission technology has received widespread attention as one of the basic functions determined by LTE-Advanced for the subsequent development of LTE. Its main feature is that it can make the mobile terminal that is difficult to adopt multi-antenna technology obtain the transmit diversity gain, thereby overcoming the adverse effects of the fading channel on the wireless communication system.

現有的3G/LTE無線通信系統裡使用的中繼協作傳輸方法主要是解碼轉發中繼(decode-and-forward，簡稱DF)。該方法的轉發過程如附圖1所示，主要包括兩個階段：如附圖1(a)所示，在第一階段，發送端(例如一個用戶終端，UE)將資料包同時發送給接收端(例如一個基站，eNB)和一個中繼節點(Relay Node，簡稱RN，這裡的RN可以是中繼設備，也可以是另一個UE)；如附圖1(b)所示，在第二階段，RN解碼資料包並重新編碼，然後將重新編碼的資料包發送給接收端，而在接收端，使用 最大比合併(maximal ratio combing，簡稱MRC)方法將兩次接收到的信號合併進行解碼得到發送端傳輸的資料。 The relay cooperative transmission method used in the existing 3G/LTE wireless communication system is mainly a decode-and-forward (DF). The forwarding process of the method is as shown in FIG. 1, and mainly includes two stages: as shown in FIG. 1(a), in the first stage, the transmitting end (for example, a user terminal, UE) simultaneously sends the data packet to the receiving end. End (for example, a base station, eNB) and a relay node (Relay Node, RN for short, where the RN may be a relay device, or another UE); as shown in FIG. 1(b), in the second In the stage, the RN decodes the data packet and re-encodes, and then sends the re-encoded data packet to the receiving end, and at the receiving end, uses The maximum ratio combing (MRC) method combines the two received signals to obtain the data transmitted by the transmitting end.

DF方法的主要問題是，由於在現有的3G/LTE系統中使用的是正交振幅調變(Quadrature Amplitude Modulation，簡稱QAM)方式，而根據3GPP標準所選用的調變星座圖，一個符號中不同位置的位元具有不同的可靠性。以16QAM為例，每個符號包括4個位元(b1b2b3b4)，而3GPP規定的星座圖如附圖2所示。可以看出，b1，b2位置的位元的不同取值分佈在不同的象限，可以通過象限進行區分；而b3，b4位置的位元的不同取值分佈在同一象限，必須在象限內進行區分。因此b1，b2位置的位元具有更遠的歐幾里得距離，也就是說，b1，b2位置的位元具有更高的可靠性，而b3，b4位置的位元可靠性較低。而DF方法由於在轉發時使用的是和發送端同樣的符號，即可靠性較低的位元在經過轉發後可靠性會進一步下降，因此其性能受限於可靠性較低的位元，即b3，b4位置的位元的誤碼率是影響DF方法整體誤碼率的主要因素。 The main problem of the DF method is that since the Quadrature Amplitude Modulation (QAM) method is used in the existing 3G/LTE system, the modulation constellation selected according to the 3GPP standard is different in one symbol. The bits of the location have different reliability. Taking 16QAM as an example, each symbol includes 4 bits (b 1 b 2 b 3 b 4 ), and the constellation diagram specified by 3GPP is as shown in FIG. 2 . It can be seen that the different values of the bits at positions b 1 and b 2 are distributed in different quadrants and can be distinguished by quadrants; and the different values of the bits at positions b 3 and b 4 are distributed in the same quadrant, and must be Distinguish within the quadrant. Therefore, the bit at the b 1 , b 2 position has a farther Euclidean distance, that is, the bit at the b 1 , b 2 position has higher reliability, and the bit at the b 3 , b 4 position Low reliability. The DF method uses the same symbol as the sender when forwarding, that is, the reliability of the bit with lower reliability is further reduced after forwarding, so its performance is limited by the less reliable bit, that is, The bit error rate of the bit at the b 3 and b 4 positions is the main factor affecting the overall bit error rate of the DF method.

現有技術中針對多階QAM調變中位元可靠性差異的特點，相應的提出了一些基於星座重組的技術方案用於均衡位元之間的可靠性差異，典型的如在HARQ中使用的基於星座重組的重傳方法。該方法通過在接收端和發送端儲存同樣的一組調變星座圖，並在發送端根據接收端的反饋，在每次重傳時選用不同的星座圖進行調變，在接收端使用相應的星座圖進行解調，從而均衡位元可靠性差異， 達到減少傳輸錯誤的目的。然而此類基於星座重組的方法並不適合當前中繼協作傳輸的實際應用場景。主要原因包括：一，需要相應的控制信令和接收端的反饋信號來指示如何進行星座重組，而協作中繼傳輸方式是直接轉發，並沒有接收反饋後再發送的步驟；二，現有的3GPP規範已經明確規定了各階QAM調變所使用的星座圖，使用規範之外的星座圖可能導致設備相容問題，另外此類方法要求接收端和RN儲存所有可能的星座圖，而協作中繼傳輸的一大優點就是可以由某一UE充當RN，在由UE充當RN的情況下，儲存所有可能的星座圖對UE來說加大了終端設備的儲存要求，提高了成本；三，此類方法需要通過複雜的搜索演算法尋找最優星座圖，加大了對RN運算能力的要求，同樣也不適用於UE充當RN的情況。 In the prior art, for the characteristics of bit reliability differences in multi-order QAM modulation, some technical solutions based on constellation recombination are proposed to balance the reliability differences between the bits, which are typically used in HARQ. Retransmission method for constellation reorganization. The method stores the same set of modulated constellation diagrams at the receiving end and the transmitting end, and uses different constellation diagrams for modulation at each retransmission according to the feedback of the receiving end at the transmitting end, and uses the corresponding constellation at the receiving end. The picture is demodulated to balance bit reliability differences, Achieve the purpose of reducing transmission errors. However, such a method based on constellation recombination is not suitable for the actual application scenario of the current relay cooperative transmission. The main reasons include: First, the corresponding control signaling and the feedback signal at the receiving end are required to indicate how to perform constellation recombination, and the cooperative relay transmission mode is direct forwarding, and there is no step of receiving feedback and then transmitting; Second, the existing 3GPP specifications The constellation diagram used in each order QAM modulation has been clearly defined. The use of constellation diagrams outside the specification may lead to device compatibility problems. In addition, such methods require the receiving end and the RN to store all possible constellations, and cooperative relay transmission. A great advantage is that a certain UE can act as an RN. In the case where the UE acts as an RN, storing all possible constellations increases the storage requirements of the terminal device for the UE, and increases the cost. Third, such methods need Finding the optimal constellation map through complex search algorithms increases the requirements for RN computing power, and is also not applicable to the case where the UE acts as the RN.

為此，需要一種新的在中繼協作傳輸過程中用於均衡QAM調變符號位元可靠性差異的方法，並且該方法應當儘量相容現有規範並適合於UE充當RN的情況。 To this end, there is a need for a new method for equalizing the reliability difference of QAM modulated symbol bits in a relay cooperative transmission process, and the method should be as compatible as possible with existing specifications and suitable for the case where the UE acts as an RN.

為解決現有技術中的上述問題，本發明提出一種新的轉發方法，在RN轉發信號之前，將QAM調變符號中的位元序列先進行重排操作，將可靠性不同的位置的位元進行重排，然後再進行調變並發送。而在接收端，接收發送端發出的原始信號和RN轉發的進行過重排的信號，然後使用合併估計方法進行解碼。 In order to solve the above problems in the prior art, the present invention proposes a new forwarding method. Before the RN forwards the signal, the bit sequence in the QAM modulation symbol is first rearranged, and the bit in the location with different reliability is performed. Rearrange, then make changes and send. At the receiving end, the original signal sent by the transmitting end and the re-arranged signal forwarded by the RN are received, and then the combined estimation method is used for decoding.

具體地，根據本發明的第一態樣，提出了一種在無線通信系統的第一設備中轉發由第二設備發送的多階正交振幅調變信號的方法，包括以下步驟：接收從所述第二設備發送的初始的多階正交振幅調變信號；解碼所述初始的多階正交振幅調變信號得到初始的符號序列，所述符號序列包含至少一個符號，所述符號包含一個位元序列，所述位元序列中包括前部和後部，其中所述前部的位元的可靠性不同於所述後部的位元的可靠性；對所述位元序列的所述前部和所述後部進行重排得到重排後的符號，使得所述重排後的符號中的位元序列中與所述前部對應的位置中包含至少一個所述後部中的位元，並且所述後部對應的位置中包含至少一個所述前部中的位元；以所述重排後的符號組成重排後的符號序列；以及編碼所述重排後的符號序列得到重排後的多階正交振幅調變信號並發送所述重排後的多階正交振幅調變信號。 Specifically, according to a first aspect of the present invention, a method for forwarding a multi-order quadrature amplitude modulation signal transmitted by a second device in a first device of a wireless communication system is provided, comprising the steps of: receiving from said An initial multi-order quadrature amplitude modulation signal transmitted by the second device; decoding the initial multi-order quadrature amplitude modulation signal to obtain an initial symbol sequence, the symbol sequence comprising at least one symbol, the symbol comprising one bit a sequence of elements including a front portion and a rear portion, wherein a reliability of the front portion of the bit is different from a reliability of the rear portion of the bit; the front portion of the bit sequence Performing rearrangement of the rear portion to obtain a rearranged symbol such that at least one of the rear portions is included in a position in the sequence of bits in the rearranged symbol corresponding to the front portion, and The rear corresponding position includes at least one bit in the front portion; the rearranged symbol is used to form a rearranged symbol sequence; and the rearranged symbol sequence is encoded to obtain a rearranged multi-order Orthogonal vibration Modulated signal and transmitting the multi-order quadrature amplitude modulation signal after rearrangement.

較佳地，所述由第二設備發送的多階正交振幅調變信號為16QAM信號或者64QAM信號。 Preferably, the multi-order quadrature amplitude modulation signal transmitted by the second device is a 16QAM signal or a 64QAM signal.

更佳地，當所述前部和所述後部的長度相同時，所述重排為將所述前部的位元和所述後部的位元進行交換。 More preferably, when the lengths of the front portion and the rear portion are the same, the rearrangement is to exchange the bit of the front portion and the bit of the rear portion.

較佳地，所述第一設備為中繼設備或者用戶設備。 Preferably, the first device is a relay device or a user device.

根據本發明的第二態樣，提出了一種在無線通信系統的第三設備中接收多階正交振幅調變信號的方法，包括以下步驟：接收從第二設備發送的初始的多階正交振幅調變信號；接收從第一設備發送的根據本發明第一方面的方法 生成的重排後的多階正交振幅調變信號；以及根據接收到的所述初始的多階正交振幅調變信號和所述重排後的多階正交振幅調變信號，進行基於合併估計的解碼操作。 According to a second aspect of the present invention, a method of receiving a multi-order quadrature amplitude modulation signal in a third device of a wireless communication system is provided, comprising the steps of: receiving an initial multi-order orthogonality transmitted from a second device An amplitude modulation signal; receiving the method according to the first aspect of the invention transmitted from the first device Generating a rearranged multi-order quadrature amplitude modulation signal; and performing based on the received first multi-order quadrature amplitude modulation signal and the rearranged multi-order quadrature amplitude modulation signal Combine the estimated decoding operations.

較佳地，所述基於合併估計的解碼操作為基於最大後驗方法的解碼操作。 Preferably, the decoding operation based on the merge estimation is a decoding operation based on a maximum a posteriori method.

更佳地，所述基於最大後驗方法的解碼操作為基於對數似然比的解碼操作。 More preferably, the decoding operation based on the maximum a posteriori method is a log likelihood ratio based decoding operation.

更佳地，所述基於對數似然比的解碼操作包括：分別計算所述初始的多階正交振幅調變信號和所述重排後的多階正交振幅調變信號中每個位元的對數似然比值；按照根據本發明第一方面的方法的重排步驟中的重排操作的對應關係，將所述初始的多階正交振幅調變信號中每個位元的對數似然比值與同其對應的所述重排後的多階正交振幅調變信號中每個位元的對數似然比值進行合併得到合併後每個位元的對數似然比值；基於所述合併後每個位元的對數似然比值進行解碼操作。 More preferably, the log likelihood ratio based decoding operation comprises: calculating each of the initial multi-order quadrature amplitude modulation signal and the rearranged multi-order quadrature amplitude modulation signal separately a log likelihood ratio; a log likelihood of each bit in the initial multi-order quadrature amplitude modulation signal in accordance with a correspondence of rearrangement operations in the rearrangement step of the method according to the first aspect of the invention Comparing the ratio with a log likelihood ratio value of each bit in the rearranged multi-order quadrature amplitude modulation signal corresponding thereto, to obtain a log likelihood ratio value of each bin after combining; The log likelihood ratio of each bit is decoded.

根據本發明的第三態樣，提出了一種用於在無線通信系統的第一設備中轉發由第二設備發送的多階正交振幅調變信號的裝置，包括：接收單元，用於從所述第二設備發送的初始的多階正交振幅調變信號；解碼單元，用於解碼所述初始的多階正交振幅調變信號得到初始的符號序列，所述符號序列包含至少一個符號，所述符號包含一個位元序列，所述位元序列中包括前部和後部，其中所述前部的位元的可靠性不同於所述後部的位元的可靠性；重排單 元，對所述位元序列的所述前部和所述後部進行重排得到重排後的符號，使得所述重排後的符號中的位元序列中與所述前部對應的位置中包含至少一個所述後部中的位元，並且所述後部對應的位置中包含至少一個所述前部中的位元；組合單元，用於將所述重排的符號組成重排後的符號序列；編碼發射單元，用於編碼所述重排後的符號序列得到重排後的多階正交振幅調變信號並發送所述重排後的多階正交振幅調變信號。 According to a third aspect of the present invention, an apparatus for forwarding a multi-order quadrature amplitude modulation signal transmitted by a second device in a first device of a wireless communication system is provided, comprising: a receiving unit for An initial multi-order quadrature amplitude modulation signal sent by the second device; a decoding unit, configured to decode the initial multi-order quadrature amplitude modulation signal to obtain an initial symbol sequence, where the symbol sequence includes at least one symbol, The symbol includes a sequence of bits including a front portion and a rear portion, wherein the reliability of the front portion of the bit is different from the reliability of the rear portion of the bit; And rearranging the front and the rear of the sequence of bits to obtain a rearranged symbol such that a position in the sequence of bits in the rearranged symbol corresponds to the front portion Include at least one of the bits in the back portion, and the position corresponding to the back portion includes at least one of the bits in the front portion; and a combining unit configured to form the rearranged symbol sequence by the rearranged symbols And a coded transmitting unit, configured to encode the rearranged symbol sequence to obtain a rearranged multi-order quadrature amplitude modulation signal and transmit the rearranged multi-order quadrature amplitude modulation signal.

較佳地，所述由第二設備發送的多階正交振幅調變信號為16QAM信號或者64QAM信號。 Preferably, the multi-order quadrature amplitude modulation signal transmitted by the second device is a 16QAM signal or a 64QAM signal.

更佳地，當所述前部和所述後部的長度相同時，所述重排單元為將所述前部的位元和所述後部的位元進行交換。 More preferably, when the lengths of the front portion and the rear portion are the same, the rearrangement unit exchanges the bit of the front portion and the bit of the rear portion.

較佳地，所述第一設備為中繼設備或者用戶設備。 Preferably, the first device is a relay device or a user device.

根據本發明的第四態樣，提出了一種用於在無線通信系統的第三設備中接收多階正交振幅調變信號的裝置，包括：接收單元，用於接收從第二設備發送的初始的多階正交振幅調變信號和從第一設備發送的根據申請專利範圍第1項的方法生成的重排後的多階正交振幅調變信號；解碼單元，用於根據接收到的所述初始的多階正交振幅調變信號和所述重排後的多階正交振幅調變信號，進行基於合併估計的解碼操作。 According to a fourth aspect of the present invention, an apparatus for receiving a multi-order quadrature amplitude modulation signal in a third device of a wireless communication system is provided, comprising: a receiving unit, configured to receive an initial transmission from a second device a multi-order quadrature amplitude modulation signal and a rearranged multi-order quadrature amplitude modulation signal generated from the first device according to the method of claim 1; a decoding unit for receiving the received The initial multi-order quadrature amplitude modulation signal and the rearranged multi-order quadrature amplitude modulation signal are subjected to a decoding operation based on the combined estimation.

較佳地，所述解碼單元進行的所述基於合併估計的解碼操作為基於最大後驗方法的解碼操作。 Preferably, the decoding operation based on the merge estimation performed by the decoding unit is a decoding operation based on a maximum a posteriori method.

更佳地，所述解碼單元進行的所述基於最大後驗方法的解碼操作為基於對數似然比的解碼操作。 More preferably, the decoding operation based on the maximum a posteriori method performed by the decoding unit is a log likelihood ratio based decoding operation.

更佳地，所述解碼單元進行的所述基於對數似然比的解碼操作包括：分別計算所述初始的多階正交振幅調變信號和所述重排後的多階正交振幅調變信號中每個位元的對數似然比值；按照根據本發明第一方面的方法的重排步驟中的重排操作的對應關係，將所述初始的多階正交振幅調變信號中每個位元的對數似然比值與同其對應的所述重排後的多階正交振幅調變信號中每個位元的對數似然比值進行合併得到合併後每個位元的對數似然比值；基於所述合併後每個位元的對數似然比值進行解碼操作。 More preferably, the log likelihood ratio based decoding operation performed by the decoding unit includes: respectively calculating the initial multi-order quadrature amplitude modulation signal and the rearranged multi-order quadrature amplitude modulation a log likelihood ratio value for each bit in the signal; each of said initial multi-order quadrature amplitude modulation signals in accordance with a correspondence of rearrangement operations in the rearrangement step of the method according to the first aspect of the present invention The log likelihood ratio of the bit is combined with the log likelihood ratio value of each bit in the rearranged multi-order quadrature amplitude modulation signal corresponding thereto to obtain a log likelihood ratio value of each bit after combining And performing a decoding operation based on the log likelihood ratio value of each bit after the combining.

本發明中，透過在RN轉發信號前對QAM符號的位元序列進行位置的重排，實際上將可靠性較高的位元與可靠性較低的位元進行了交換。也就是說，避免了可靠性較低的位元在轉發過程中可靠性的進一步下降，從而均衡了不同位元之間的可靠性差異。考慮到轉發的性能主要受限於可靠性較低的位元，因此本發明從整體上提升了轉發的性能。同時在RN處的操作非常簡單，只需將解碼後的符號的位元序列進行位置的重排，無需增加控制信令或接收反饋信號，對現有規範影響很小；而且實現這一操作的開銷也很小，尤其適用於UE充當RN的情況。另外在接收端通過合併估計的方法將對應的位元的對數似然比值簡單合併即可實現解碼，接收端的運算開銷也很小。即本發明達到了以較小的開銷提升中繼協作傳輸性能的有益效果。 In the present invention, by rearranging the bit sequence of the QAM symbol before the RN forwards the signal, the bit with higher reliability is actually exchanged with the bit with lower reliability. That is to say, the reliability of the bit with lower reliability is further reduced during the forwarding process, thereby balancing the reliability difference between different bits. Considering that the performance of forwarding is mainly limited by the less reliable bits, the present invention improves the forwarding performance as a whole. At the same time, the operation at the RN is very simple, and only the bit sequence of the decoded symbols needs to be rearranged, without adding control signaling or receiving feedback signals, which has little impact on existing specifications; and the overhead of implementing this operation It is also small, especially for the case where the UE acts as an RN. In addition, at the receiving end, the log likelihood ratio of the corresponding bit is simply combined by the method of merging estimation to achieve decoding, and the processing overhead of the receiving end is also small. That is, the present invention achieves the beneficial effect of improving relay cooperative transmission performance with less overhead.

6001‧‧‧接收單元 6001‧‧‧ receiving unit

6002‧‧‧解碼單元 6002‧‧‧Decoding unit

6003‧‧‧交換單元 6003‧‧‧Exchange unit

6004‧‧‧組合單元 6004‧‧‧ combination unit

6005‧‧‧編碼發射單元 6005‧‧‧ coded launch unit

S60‧‧‧轉發裝置 S60‧‧‧Transfer device

7001‧‧‧接收單元 7001‧‧‧ Receiving unit

7002‧‧‧解碼單元 7002‧‧‧Decoding unit

S70‧‧‧接收裝置 S70‧‧‧ receiving device

透過參照附圖閱讀以下所作的對非限制性實施例的詳細描述，本發明的其他特徵、目的和優勢將會更為明顯。 Other features, objects, and advantages of the invention will be apparent from the description of the accompanying drawings.

圖1(a)和1(b)示出了DF方法的轉發過程；圖2示出了3GPP規範規定的16QAM星座圖；圖3(a)和3(b)示出了根據本發明的中繼協作傳輸方法過程；圖4示出了根據本發明的信號轉發流程圖；圖5示出了根據本發明的信號接收流程圖；圖6示出了根據本發明的信號轉發裝置方塊圖；圖7示出了根據本發明的信號接收裝置方塊圖；圖8示出了本發明與DF方法的性能比較仿真結果。 Figures 1(a) and 1(b) show the forwarding process of the DF method; Figure 2 shows the 16QAM constellation diagram specified by the 3GPP specification; Figures 3(a) and 3(b) show the medium according to the present invention. Following a cooperative transmission method process; FIG. 4 shows a signal forwarding flow chart according to the present invention; FIG. 5 shows a signal reception flow chart according to the present invention; and FIG. 6 shows a block diagram of a signal forwarding device according to the present invention; 7 is a block diagram showing a signal receiving apparatus according to the present invention; and FIG. 8 is a graph showing performance comparison simulation results of the present invention and the DF method.

其中，相同或相似的附圖標記表示相同或相似的步驟特徵或裝置/模組。 Wherein, the same or similar reference numerals indicate the same or similar step features or devices/modules.

在以下較佳的實施例的具體描述中，將參考構成本發明一部分的所附的附圖。所附的附圖通過示例的方式示出了能夠實現本發明的特定的實施例。示例的實施例並不旨在窮盡根據本發明的所有實施例。可以理解，在不偏離本發明的範圍的前提下，可以利用其他實施例，也可以進行結構性或者邏輯性的修改。因此，以下的具體描述並非限制性的，且本發明的範圍由所附的申請專利範圍所限定。 In the detailed description of the preferred embodiments that follow, reference is made to the accompanying drawings that form a part of the invention. The accompanying drawings illustrate, by way of example, specific embodiments The exemplary embodiments are not intended to be exhaustive of all embodiments in accordance with the invention. It is to be understood that other embodiments may be utilized and structural or logical modifications may be made without departing from the scope of the invention. Therefore, the following detailed description is not to be construed as limiting the scope of the invention.

附圖3(a)和3(b)示出了根據本發明的中繼協作傳輸方法過程。不失一般性，在本實施例中使用的是16QAM調變，同樣本發明可以方便的適用於其他階數的QAM信號。例如64QAM的情況下，每個符號包括6個位元(b1b2b3b4b5b6)，而b1、b2位置的位元同樣具有比其他位置的位元更高的可靠性，也存在位元之間可靠性差異的問題，透過本發明的位元位置重排的方法，同樣可以達到均衡位元之間可靠性差異的效果。 3(a) and 3(b) illustrate a relay cooperative transmission method procedure in accordance with the present invention. Without loss of generality, 16QAM modulation is used in this embodiment, and the present invention can be conveniently applied to other order QAM signals. For example, in the case of 64QAM, each symbol includes 6 bits (b 1 b 2 b 3 b 4 b 5 b 6 ), and the bits at positions b 1 and b 2 also have higher positions than bits at other positions. Reliability, there is also a problem of reliability difference between bits, and the method of rearranging the bit positions of the present invention can also achieve the effect of balancing the reliability difference between the bits.

如附圖3(a)所示，在轉發過程的第一階段，發送端(例如一個用戶終端，UE)將原始信號同時發送給接收端(例如一個基站，eNB)和一個中繼節點(Relay Node，簡稱RN，這裡的RN可以是中繼設備，也可以是另一個UE)，不失一般性，這裡發送的原始信號包含一個16QAM符號序列，該符號序列包含一個16QAM符號x1(b1b2b3b4)；如附圖3(b)所示，在轉發過程的第二階段，RN解碼資料包得到原始發送的符號x1(b1b2b3b4)，然後將x1的位元序列分成前後兩個部分，前部包括(b1b2)，後部包括(b3b4)，這兩部分的位元的可靠性不同，其中前部(b1b2)的可靠性較高。重排這兩個部分生成重排後的符號，使得中的前部至少含有一個原來後部的位元(b3b4)，並且中的後部至少含有一個原來前部的位元(b1b2)；例如(b1b3b2b4)、(b4b2b1b3)或(b4b3b2b1)等各種形式。然後將重排後的符號重新調變，發送到接收端。當原始信號所包含的符號序列中含有多個符號時， 要對每個符號分別進行上述的重排操作，然後按原始符號序列的排列順序將重排後的符號組合成新的符號序列，然後對新的符號序列進行調變並發送。 As shown in FIG. 3(a), in the first phase of the forwarding process, the transmitting end (eg, a user terminal, UE) simultaneously transmits the original signal to the receiving end (eg, a base station, eNB) and a relay node (Relay). Node, referred to as RN, where the RN can be a relay device or another UE), without loss of generality, the original signal transmitted here contains a 16QAM symbol sequence, which contains a 16QAM symbol x 1 (b 1 b 2 b 3 b 4 ); as shown in FIG. 3(b), in the second phase of the forwarding process, the RN decodes the data packet to obtain the originally transmitted symbol x 1 (b 1 b 2 b 3 b 4 ), and then The bit sequence of x 1 is divided into two parts, the front part includes (b 1 b 2 ), and the rear part includes (b 3 b 4 ), and the reliability of the bit parts of the two parts is different, wherein the front part (b 1 b 2 ) ) The reliability is high. Rearrange these two parts to generate rearranged symbols Make The front part of the middle contains at least one original rear bit (b 3 b 4 ), and The rear part of the middle contains at least one original front bit (b 1 b 2 ); for example (b 1 b 3 b 2 b 4 ), (b 4 b 2 b 1 b 3 ) or (b 4 b 3 b 2 b 1 ) and other forms. Then rearrange the symbols Re-modulate and send to the receiving end. When the original signal contains a plurality of symbols in a sequence of symbols, the above-mentioned rearrangement operation is performed separately for each symbol, and then the rearranged symbols are combined into a new symbol sequence in the order of the original symbol sequence, and then The new symbol sequence is modulated and sent.

本實施例中，更較佳的方案是在進行重排操作時，當前部和後部長度相等的情況下，交換前部和後部，即交換b1b2和b3b4的位置得到(b3b4b1b2)，該較佳方案的實現最為簡單，均衡位元之間可靠性差異的效果最顯著。 In this embodiment, a more preferable solution is to exchange the front and rear portions, that is, the positions of b 1 b 2 and b 3 b 4 when the current portion and the rear portion are equal in length during the rearrangement operation. (b 3 b 4 b 1 b 2 ), the implementation of the preferred scheme is the simplest, and the effect of balancing the reliability difference between the bits is most significant.

附圖4示出了根據上述中繼協作傳輸過程，在RN處進行資料轉發的具體方法：S41.接收從所述第二設備發送的初始的多階正交振幅調變信號；S42.解碼所述初始的多階正交振幅調變信號得到初始的符號序列，所述符號序列包含至少一個符號，所述符號包含一個位元序列，所述位元序列中包括前部和後部，其中所述前部的位元的可靠性不同於所述後部的位元的可靠性；S43.對所述位元序列的所述前部和所述後部進行重排得到重排後的符號，使得所述重排後的符號中的位元序列中與所述前部對應的位置中包含至少一個所述後部中的位元，並且所述後部對應的位置中包含至少一個所述前部中的位元；S44.以所述重排的符號組成重排後的符號序列；S45.編碼所述重排後的符號序列得到重排後的多階正交振幅調變信號並發送所述重排後的多階正交振幅調變 信號。 4 shows a specific method for performing data forwarding at an RN according to the above-described relay cooperative transmission process: S41. Receiving an initial multi-order orthogonal amplitude modulation signal transmitted from the second device; S42. Decoding station The initial multi-order quadrature amplitude modulation signal obtains an initial symbol sequence, the symbol sequence comprising at least one symbol, the symbol comprising a sequence of bits, the sequence of bits including a front portion and a rear portion, wherein The reliability of the front bit is different from the reliability of the rear bit; S43. rearranging the front and the rear of the bit sequence to obtain a rearranged symbol, such that The position in the sequence of bits in the rearranged symbol corresponding to the front portion includes at least one of the bits in the rear portion, and the position corresponding to the rear portion includes at least one bit in the front portion S44. Forming the rearranged symbol sequence with the rearranged symbols; S45. Encoding the rearranged symbol sequence to obtain a rearranged multi-order quadrature amplitude modulation signal and transmitting the rearranged signal Multi-order quadrature amplitude modulation signal.

而在接收端，接收到發送端發送的原始信號x1(b1b2b3b4)和RN轉發的重排後的信號(b3b4b1b2)後，本發明提出，在接收端使用基於合併估計的軟資訊合併技術解碼，由於接收端已經知道x1，之間的位元序列的對應關係，採用合併估計的方法可以充分利用接收到的資訊，獲得更好的性能。 At the receiving end, the original signal x 1 (b 1 b 2 b 3 b 4 ) transmitted by the transmitting end and the rearranged signal forwarded by the RN are received. After (b 3 b 4 b 1 b 2 ), the present invention proposes to use the soft information combining technique based on the merge estimation to decode at the receiving end, since the receiving end already knows x 1 , The correspondence between the bit sequences is combined and the combined estimation method can make full use of the received information to obtain better performance.

具體的，可以採用多種基於合併估計的方式實現解碼，例如最大似然估計(maximum likelihood簡稱ML)方法，最大後驗機率(maximum a posteriori簡稱MAP)方法等。考慮到ML方法的運算開銷較大，在本實施例中較佳MAP方法進行解碼。 Specifically, the decoding may be implemented by using multiple methods based on the combined estimation, such as a maximum likelihood estimation (ML) method, a maximum a posteriori (MAP) method, and the like. In view of the large computational overhead of the ML method, the MAP method is preferably decoded in this embodiment.

不失一般性的，本實施例中較佳對數似然比(logarithmic likelihood ratios簡稱LLR)方法進行解碼，其他基於MAP的解碼方法同樣適用於本發明的解碼步驟。 Without loss of generality, the preferred logarithmic likelihood ratios (LLR) method is decoded in this embodiment, and other MAP-based decoding methods are equally applicable to the decoding steps of the present invention.

首先，在轉發過程的第一階段，接收端受到的信號可以表示為下式：y 1=h 1．x 1+n 1 First, in the first phase of the forwarding process, the signal received by the receiving end can be expressed as: y 1 = h 1 . x 1 + n 1

其中y1為接收到的信號，h1為發送端到接收端的通道回應，n1為通道的雜訊。 Where y 1 is the received signal, h 1 is the channel response from the sender to the receiver, and n 1 is the channel noise.

相應的，符號x1的對數似然比LLR1(x1)可以由下式計算： Correspondingly, the log likelihood ratio LLR 1 (x 1 ) of the symbol x1 can be calculated by:

其中，logP表示條件機率運算，si代表符號x1的所有可能的取值，對於16QAM的情況，i=1~16，σ2代表雜訊功率。 Where logP represents the conditional probability operation, s i represents all possible values of the symbol x 1 , and for the case of 16QAM, i=1~16, σ 2 represents the noise power.

然後符號中每個位元的對數似然比LLR1(bj)可以由下式計算： Then the log likelihood ratio LLR 1 (b j ) of each bit in the symbol can be calculated by:

其中，si，sk分別代表位元bj=1時符號x1的所有可能的取值和bj=0時符號x1的所有可能的取值，對於16QAM的情況，j=1~4。 Wherein, s i, s k representing the bit b j = 1 for all possible values of symbols x 1 and the sign of b j = 0 for all possible values of x 1, for the case of 16QAM, j = 1 ~ 4.

至此，我們得到了第一階段接收到的原始信號中每個位元的對數似然比值，然後根據類似的防法，計算第二階段接收到的重排後的信號中每個位元的對數似然比值：首先是信號模型： So far, we get the log likelihood ratio of each bit in the original signal received in the first stage, and then calculate the logarithm of each bit in the rearranged signal received in the second stage according to a similar defense method. Likelihood ratio: first is the signal model:

其中y2為接收到的信號，h2為RN到接收端的通道回應，n2為通道的雜訊。 Where y 2 is the received signal, h 2 is the channel response of the RN to the receiving end, and n 2 is the noise of the channel.

然後計算符號的對數似然比： Then calculate the symbol Log likelihood ratio:

其中，logP表示條件機率運算，代表符號的所有 可能的取值，對於16QAM的情況，i=1~16，σ2代表雜訊功率 Where logP represents a conditional probability operation, Representative symbol All possible values, for the case of 16QAM, i=1~16, σ 2 represents the noise power

然後再計算每個位元的對數似然比： Then calculate the log likelihood ratio of each bit:

其中，，分別代表位元=1時符號的所有可能的取值和=0時符號的所有可能的取值，對於16QAM的情況，j=1~4。 among them, , Representative bit =1 sign All possible values and =0 sign All possible values, for the case of 16QAM, j = 1~4.

最後，將兩個階段接收到的符號中對應位置的位元的對數似然比值進行合併，對於符號x1(b1b2b3b4)和(b3b4b1b2)，合併後的位元的對數似然比值為： Finally, the log likelihood ratio values of the corresponding positions in the symbols received in the two stages are combined for the symbol x 1 (b 1 b 2 b 3 b 4 ) and (b 3 b 4 b 1 b 2 ), the log likelihood ratios of the merged bits are:

然後對合併後的位元的對數似然比值(b i )(i=1,2,3,4)進行Turbo解碼。 Then the log likelihood ratio of the merged bits ( b i )( i =1, 2, 3, 4) performs Turbo decoding.

附圖5示出了根據上述解碼步驟，在接收端進行解碼操作的具體方法：S51.接收從第二設備發送的初始的多階正交振幅調變信號；S52.接收從第一設備發送的根據申請專利範圍第1 項的方法生成的重排後的多階正交振幅調變信號；S53.根據接收到的所述初始的多階正交振幅調變信號和所述重排後的多階正交振幅調變信號，進行基於合併估計的解碼操作。 Figure 5 shows a specific method of performing a decoding operation at the receiving end according to the above decoding step: S51. receiving an initial multi-order quadrature amplitude modulation signal transmitted from the second device; S52. receiving the transmission from the first device According to the scope of patent application a rearranged multi-order quadrature amplitude modulation signal generated by the method of the item; S53. according to the received initial multi-order quadrature amplitude modulation signal and the rearranged multi-order quadrature amplitude modulation The signal is subjected to a decoding operation based on the merge estimation.

以下再來結合框圖來介紹本發明所提供的與上述方法相對應的裝置，鑒於其中的單元/裝置特徵與上述方法中的步驟特徵有對應關係，將從簡敘述。 Hereinafter, the apparatus corresponding to the above method provided by the present invention will be described with reference to the block diagram. In view of the corresponding relationship between the unit/device features and the step features in the above method, a brief description will be given.

附圖6示出了一種用於在無線通信系統的第一設備中轉發由第二設備發送的多階正交振幅調變信號的裝置S60的方塊圖，轉發裝置S60包括：接收單元6001，用於從所述第二設備發送的初始的多階正交振幅調變信號；解碼單元6002，用於解碼所述初始的多階正交振幅調變信號得到初始的符號序列，所述符號序列包含至少一個符號，所述符號包含一個位元序列，所述位元序列中包括前部和後部，其中所述前部的位元的可靠性不同於所述後部的位元的可靠性；交換單元6003，對所述位元序列的所述前部和所述後部進行重排得到重排後的符號，使得所述重排後的符號中的位元序列中與所述前部對應的位置中包含至少一個所述後部中的位元，並且所述後部對應的位置中包含至少一個所述前部中的位元；組合單元6004，用於將所述重排的符號組成重排後的符號序列； 編碼發射單元6005，用於編碼所述重排後的符號序列得到重排後的多階正交振幅調變信號並發送所述重排後的多階正交振幅調變信號。 6 shows a block diagram of a device S60 for forwarding a multi-order quadrature amplitude modulation signal transmitted by a second device in a first device of a wireless communication system, the forwarding device S60 comprising: a receiving unit 6001, An initial multi-order quadrature amplitude modulation signal transmitted from the second device; a decoding unit 6002, configured to decode the initial multi-order quadrature amplitude modulation signal to obtain an initial symbol sequence, where the symbol sequence includes At least one symbol, the symbol comprising a sequence of bits including a front portion and a rear portion, wherein a reliability of the front portion of the bit is different from a reliability of the rear portion of the bit unit; 6003, rearranging the front part and the back part of the bit sequence to obtain a rearranged symbol, such that a position in the sequence of bits in the rearranged symbol corresponds to the front part Include at least one of the bits in the back portion, and the position corresponding to the back portion includes at least one of the bits in the front portion; the combining unit 6004 is configured to form the rearranged symbol into the rearranged symbol sequence; The code transmitting unit 6005 is configured to encode the rearranged symbol sequence to obtain a rearranged multi-order quadrature amplitude modulation signal and transmit the rearranged multi-order quadrature amplitude modulation signal.

較佳地，所述由第二設備發送的多階正交振幅調變信號為16QAM信號或者64QAM信號 Preferably, the multi-order quadrature amplitude modulation signal transmitted by the second device is a 16QAM signal or a 64QAM signal.

較佳地，當所述前部和所述後部的長度相同時，所述重排單元為將所述前部的位元和所述後部的位元進行交換。 Preferably, when the lengths of the front portion and the rear portion are the same, the rearrangement unit exchanges the bit of the front portion and the bit of the rear portion.

較佳地，所述第一設備為中繼設備或者用戶設備。 Preferably, the first device is a relay device or a user device.

附圖7示出了一種用於在無線通信系統的第三設備中接收多階正交振幅調變信號的裝置S70的框圖，接收裝置S70包括：接收單元7001，用於接收從第二設備發送的初始的多階正交振幅調變信號和從第一設備發送的根據本發明的方法生成的重排後的多階正交振幅調變信號；解碼單元7002，用於根據接收到的所述初始的多階正交振幅調變信號和所述重排後的多階正交振幅調變信號，進行基於合併估計的解碼操作。 Figure 7 shows a block diagram of an apparatus S70 for receiving a multi-order quadrature amplitude modulation signal in a third device of a wireless communication system, the receiving device S70 comprising: a receiving unit 7001 for receiving a second device An initial multi-order quadrature amplitude modulation signal transmitted and a rearranged multi-order quadrature amplitude modulation signal generated by the method according to the present invention transmitted from the first device; a decoding unit 7002, configured to receive the received The initial multi-order quadrature amplitude modulation signal and the rearranged multi-order quadrature amplitude modulation signal are subjected to a decoding operation based on the combined estimation.

較佳地，所述解碼單元進行的所述基於合併估計的解碼操作為基於最大後驗方法的解碼操作。 Preferably, the decoding operation based on the merge estimation performed by the decoding unit is a decoding operation based on a maximum a posteriori method.

更佳地，所述解碼單元進行的所述基於最大後驗方法的解碼操作為基於對數似然比的解碼操作。 More preferably, the decoding operation based on the maximum a posteriori method performed by the decoding unit is a log likelihood ratio based decoding operation.

更佳地，所述解碼單元進行的所述基於對數似然比的解碼操作包括：分別計算所述初始的多階正交振幅調變信 號和所述重排後的多階正交振幅調變信號中每個位元的對數似然比值；按照根據本發明的方法的重排步驟中的重排操作的對應關係，將所述初始的多階正交振幅調變信號中每個位元的對數似然比值與同其對應的所述重排後的多階正交振幅調變信號中每個位元的對數似然比值進行合併得到合併後每個位元的對數似然比值；基於所述合併後每個位元的對數似然比值進行解碼操作。 More preferably, the decoding operation based on the log likelihood ratio performed by the decoding unit comprises: separately calculating the initial multi-order orthogonal amplitude modulation signal a log likelihood ratio value for each bit in the multi-order orthogonal amplitude modulation signal after the rearrangement; the initial relationship according to the correspondence of the rearrangement operations in the rearrangement step of the method according to the present invention The log likelihood ratio value of each bit in the multi-order quadrature amplitude modulation signal is combined with the log likelihood ratio value of each bit in the corresponding rearranged multi-order quadrature amplitude modulation signal Obtaining a log likelihood ratio value of each bit after merging; performing a decoding operation based on the log likelihood ratio value of each bit after the merging.

為證明本發明的有效性，進行了本發明與現有DF方法對比的仿真試驗。仿真中使用16QAM和64QAM調變，其中對於64QAM的情況，重排後的位元序列為(b4b5b6b1b2b3)；長度為3460位元的1/3 Turbo編碼；採用的通道模型假定UE到RN的通道同其他通道相比具有5db的增益。 To demonstrate the effectiveness of the present invention, a simulation experiment comparing the present invention to the existing DF method was conducted. The simulation uses 16QAM and 64QAM modulation, where for the case of 64QAM, the rearranged bit sequence is (b 4 b 5 b 6 b 1 b 2 b 3 ); the length is 3460 bits of 1/3 Turbo coding; The channel model employed assumes that the UE to RN channel has a gain of 5 db compared to the other channels.

仿真結果如附圖8所示，可以看出，在16QAM和64QAM的情況下，本發明的性能表現都明顯優於現有的DF方法。仿真結果可以證明，本發明提出的轉發方法同現有方法相比，達到了提升中繼協作傳輸性能的目的，確實解決了現有技術中存在的問題。 The simulation results are shown in Fig. 8. It can be seen that in the case of 16QAM and 64QAM, the performance of the present invention is significantly better than the existing DF method. The simulation results show that the forwarding method proposed by the present invention achieves the purpose of improving the cooperative transmission performance of the relay compared with the existing methods, and solves the problems existing in the prior art.

以上對本發明的實施例進行了描述，但是本發明並不局限於特定的系統、設備和具體協定，本領域內技術人員可以在所附申請專利範圍的範圍內做出各種變形或修改。 The embodiments of the present invention have been described above, but the present invention is not limited to the specific systems, equipment, and specific protocols, and various modifications and changes can be made by those skilled in the art within the scope of the appended claims.

本技術領域的一般技術人員可以透過研究說明書、公開的內容及附圖和所附的申請專利範圍，理解和實施對披露的實施方式的其他改變。在申請專利範圍中，措詞“包 括”不排除其他的元素和步驟，並且措辭“一個”不排除複數。在本發明中，“第一”、“第二”僅表示名稱，不代表次序關係。在發明的實際應用中，一個零件可能執行申請專利範圍中所引用的多個技術特徵的功能。申請專利範圍中的任何附圖標記不應理解為對範圍的限制。 Other variations to the disclosed embodiments can be understood and effected by those skilled in the <RTIgt; In the scope of patent application, the wording "package" The phrase "a" or "an" does not exclude the plural. In the present invention, "first" and "second" mean only the name, and does not represent the order relationship. In the practical application of the invention, one A part may perform a function of a plurality of technical features cited in the scope of the patent application. Any reference signs in the claims should not be construed as limiting the scope.

Claims (16)

一種在無線通信系統的第一設備中轉發由第二設備發送的多階正交振幅調變信號的方法，包括以下步驟：a.接收從該第二設備發送的初始的多階正交振幅調變信號；b.解碼該初始的多階正交振幅調變信號得到初始的符號序列，該符號序列包含至少一個符號，該符號包含一個位元序列，該位元序列中包括前部和後部，其中該前部的位元的可靠性不同於該後部的位元的可靠性；c.對該位元序列的該前部和該後部進行重排得到重排後的符號，使得該重排後的符號中的位元序列中與該前部對應的位置中包含至少一個該後部中的位元，並且該後部對應的位置中包含至少一個該前部中的位元；d.以該重排後的符號組成重排後的符號序列；以及e.編碼該重排後的符號序列得到重排後的多階正交振幅調變信號並發送該重排後的多階正交振幅調變信號。 A method of forwarding a multi-order quadrature amplitude modulation signal transmitted by a second device in a first device of a wireless communication system, comprising the steps of: a. receiving an initial multi-order quadrature amplitude modulation transmitted from the second device Transforming the initial multi-order quadrature amplitude modulation signal to obtain an initial symbol sequence, the symbol sequence comprising at least one symbol, the symbol comprising a sequence of bits including a front portion and a rear portion, Wherein the reliability of the bit of the front portion is different from the reliability of the bit of the rear portion; c. rearranging the front portion and the rear portion of the sequence of the bit to obtain a rearranged symbol, such that after the rearrangement a position in the sequence of bits in the symbol corresponding to the front portion includes at least one bit in the rear portion, and the position corresponding to the rear portion includes at least one bit in the front portion; d. The subsequent symbols constitute a rearranged symbol sequence; and e. encode the rearranged symbol sequence to obtain a rearranged multi-order quadrature amplitude modulation signal and transmit the rearranged multi-order quadrature amplitude modulation signal . 根據申請專利範圍第1項所述的方法，其中，該由第二設備發送的多階正交振幅調變信號為16QAM信號或者64QAM信號。 The method of claim 1, wherein the multi-order quadrature amplitude modulation signal transmitted by the second device is a 16QAM signal or a 64QAM signal. 根據申請專利範圍第2項所述的方法，其中，當該前部和該後部的長度相同時，該重排為將該前部的位元和該後部的位元進行交換。 The method of claim 2, wherein when the lengths of the front portion and the rear portion are the same, the rearrangement is to exchange the front portion and the rear portion. 根據申請專利範圍第1至3項中任一項所述的方法，其中，該第一設備為中繼設備或者用戶設備。 The method of any one of claims 1 to 3, wherein the first device is a relay device or a user device. 一種在無線通信系統的第三設備中接收多階正交振幅調變信號的方法，包括以下步驟：- 接收從第二設備發送的初始的多階正交振幅調變信號；- 接收從第一設備發送的根據申請專利範圍第1項的方法生成的重排後的多階正交振幅調變信號；以及- 根據接收到的該初始的多階正交振幅調變信號和該重排後的多階正交振幅調變信號，進行基於合併估計的解碼操作。 A method of receiving a multi-order quadrature amplitude modulation signal in a third device of a wireless communication system, comprising the steps of: - receiving an initial multi-order quadrature amplitude modulation signal transmitted from a second device; - receiving from the first a rearranged multi-order quadrature amplitude modulation signal generated by the apparatus according to the method of claim 1; and - based on the received multi-order orthogonal amplitude modulation signal and the rearranged A multi-order quadrature amplitude modulation signal is used to perform a decoding operation based on the combined estimation. 根據申請專利範圍第5項所述的方法，其中，該基於合併估計的解碼操作為基於最大後驗方法的解碼操作。 The method of claim 5, wherein the merge operation based on the merge estimation is a decoding operation based on a maximum a posteriori method. 根據申請專利範圍第6項所述的方法，其中，該基於最大後驗方法的解碼操作為基於對數似然比的解碼操作。 The method of claim 6, wherein the decoding operation based on the maximum a posteriori method is a log likelihood ratio based decoding operation. 根據申請專利範圍第7項所述的方法，其中，該基於對數似然比的解碼操作包括：- 分別計算該初始的多階正交振幅調變信號和該重排後的多階正交振幅調變信號中每個位元的對數似然比值；- 按照根據申請專利範圍第1項所述的方法的步驟c中的重排操作的對應關係，將該初始的多階正交振幅調變信號中每個位元的對數似然比值與同其對應的該重排後的多階正交振幅調變信號中每個位元的對數似然比值進行合併得到合併後每個位元的對數似然比值； - 基於該合併後每個位元的對數似然比值進行解碼操作。 The method of claim 7, wherein the log likelihood ratio based decoding operation comprises: - separately calculating the initial multi-order quadrature amplitude modulation signal and the rearranged multi-order quadrature amplitude a log likelihood ratio value of each bit in the modulated signal; - the initial multi-order orthogonal amplitude modulation according to the correspondence of the rearrangement operations in step c of the method described in claim 1 The log likelihood ratio value of each bit in the signal is combined with the log likelihood ratio value of each bit in the rearranged multi-order quadrature amplitude modulation signal corresponding thereto to obtain the logarithm of each bit after combining Likelihood ratio - Decoding operation based on the log likelihood ratio value of each bit after the combination. 一種用於在無線通信系統的第一設備中轉發由第二設備發送的多階正交振幅調變信號的裝置，包括：接收單元，用於從該第二設備發送的初始的多階正交振幅調變信號；解碼單元，用於解碼該初始的多階正交振幅調變信號得到初始的符號序列，該符號序列包含至少一個符號，該符號包含一個位元序列，該位元序列中包括前部和後部，其中該前部的位元的可靠性不同於該後部的位元的可靠性；重排單元，對該位元序列的該前部和該後部進行重排得到重排後的符號，使得該重排後的符號中的位元序列中與該前部對應的位置中包含至少一個該後部中的位元，並且該後部對應的位置中包含至少一個該前部中的位元；組合單元，用於將該重排的符號組成重排後的符號序列；編碼發射單元，用於編碼該重排後的符號序列得到重排後的多階正交振幅調變信號並發送該重排後的多階正交振幅調變信號。 An apparatus for forwarding a multi-order quadrature amplitude modulation signal transmitted by a second device in a first device of a wireless communication system, comprising: a receiving unit for initial multi-order orthogonality transmitted from the second device An amplitude modulation signal; a decoding unit, configured to decode the initial multi-order quadrature amplitude modulation signal to obtain an initial symbol sequence, where the symbol sequence includes at least one symbol, the symbol includes a bit sequence, and the bit sequence includes a front portion and a rear portion, wherein the reliability of the bit of the front portion is different from the reliability of the bit portion of the rear portion; the rearrangement unit rearranging the front portion and the rear portion of the sequence of the bit to be rearranged a symbol such that a position in the sequence of bits in the rearranged symbol corresponding to the front portion includes at least one bit in the rear portion, and the position corresponding to the rear portion includes at least one bit in the front portion a combining unit, configured to form the rearranged symbol sequence into a rearranged symbol sequence; and a coding transmitting unit configured to encode the rearranged symbol sequence to obtain a rearranged multi-order orthogonal amplitude modulation signal concurrent Multi-order quadrature amplitude modulation signal after the rearrangement. 根據申請專利範圍第9項所述的裝置，其中，該由第二設備發送的多階正交振幅調變信號為16QAM信號或者64QAM信號。 The device of claim 9, wherein the multi-order quadrature amplitude modulation signal transmitted by the second device is a 16QAM signal or a 64QAM signal. 根據申請專利範圍第10項所述的裝置，其中， 當該前部和該後部的長度相同時，該重排單元為將該前部的位元和該後部的位元進行交換。 The device according to claim 10, wherein When the lengths of the front portion and the rear portion are the same, the rearrangement unit exchanges the bit of the front portion and the bit portion of the rear portion. 根據申請專利範圍第9至11項中任一項所述的裝置，其中，該第一設備為中繼設備或者用戶設備。 The device of any one of clauses 9 to 11, wherein the first device is a relay device or a user device. 一種用於在無線通信系統的第三設備中接收多階正交振幅調變信號的裝置，包括：接收單元，用於接收從第二設備發送的初始的多階正交振幅調變信號和從第一設備發送的根據申請專利範圍第1項的方法生成的重排後的多階正交振幅調變信號；解碼單元，用於根據接收到的該初始的多階正交振幅調變信號和該重排後的多階正交振幅調變信號，進行基於合併估計的解碼操作。 An apparatus for receiving a multi-order quadrature amplitude modulation signal in a third device of a wireless communication system, comprising: a receiving unit, configured to receive an initial multi-order quadrature amplitude modulation signal and a slave signal transmitted from a second device a rearranged multi-order quadrature amplitude modulation signal generated by the first device according to the method of claim 1; a decoding unit configured to perform the initial multi-order quadrature amplitude modulation signal according to the received The rearranged multi-order quadrature amplitude modulation signal performs a decoding operation based on the merge estimation. 根據申請專利範圍第13項所述的裝置，其中，該解碼單元進行的該基於合併估計的解碼操作為基於最大後驗方法的解碼操作。 The apparatus of claim 13, wherein the decoding operation based on the merge estimation performed by the decoding unit is a decoding operation based on a maximum a posteriori method. 根據申請專利範圍第14項所述的裝置，其中，該解碼單元進行的該基於最大後驗方法的解碼操作為基於對數似然比的解碼操作。 The apparatus of claim 14, wherein the decoding operation performed by the decoding unit based on the maximum a posteriori method is a log likelihood ratio based decoding operation. 根據申請專利範圍第15項所述的裝置，其中，該解碼單元進行的該基於對數似然比的解碼操作包括：- 分別計算該初始的多階正交振幅調變信號和該重排後的多階正交振幅調變信號中每個位元的對數似然比值；- 按照根據申請專利範圍第1項所述的方法的步驟c中的重排操作的對應關係，將該初始的多階正交振幅調變 信號中每個位元的對數似然比值與同其對應的該重排後的多階正交振幅調變信號中每個位元的對數似然比值進行合併得到合併後每個位元的對數似然比值；- 基於該合併後每個位元的對數似然比值進行解碼操作。 The apparatus of claim 15, wherein the decoding operation performed by the decoding unit based on a log likelihood ratio comprises: - separately calculating the initial multi-order quadrature amplitude modulation signal and the rearranged a log likelihood ratio value of each bit in the multi-order quadrature amplitude modulation signal; - the initial multi-order according to the correspondence of the rearrangement operations in step c of the method according to the method of claim 1 Quadrature amplitude modulation The log likelihood ratio value of each bit in the signal is combined with the log likelihood ratio value of each bit in the rearranged multi-order quadrature amplitude modulation signal corresponding thereto to obtain the logarithm of each bit after combining Likelihood ratio; - performing a decoding operation based on the log likelihood ratio value of each bit after the combining.
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