JP3479778B2 - Radio transmitting station and radio receiving station for spread spectrum radio communication - Google Patents
Radio transmitting station and radio receiving station for spread spectrum radio communicationInfo
- Publication number
- JP3479778B2 JP3479778B2 JP2001256843A JP2001256843A JP3479778B2 JP 3479778 B2 JP3479778 B2 JP 3479778B2 JP 2001256843 A JP2001256843 A JP 2001256843A JP 2001256843 A JP2001256843 A JP 2001256843A JP 3479778 B2 JP3479778 B2 JP 3479778B2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- signals
- radio
- spread spectrum
- adjusted
- Prior art date
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Description
【0001】[0001]
【発明の属する技術分野】本発明は複数の拡散符号を用
いるスペクトラム拡散無線通信用無線送信局および無線
受信局に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio transmitter station and a radio receiver station for spread spectrum radio communication using a plurality of spread codes.
【0002】[0002]
【従来の技術】無線通信において、耐干渉性に優れた通
信方式としてスペクトラム拡散通信があり、処理利得を
一定にしたまま情報伝送速度を高速にする方法として複
数の拡散符号でスペクトラム拡散を行う方法が特開昭6
3−283246に開示されている。図9は従来の複数
の拡散符号を用いるスペクトラム拡散通信方式を説明す
る図である。同図において、9Aは無線送信局、9Bは
無線受信局である。まず、無線送信局の構成を説明する
と、9−1は伝送すべき情報信号、9−2は直/並列変
換回路、9−3−1〜9−3−nはスペクトラム拡散回
路、9−4は合成回路、9−5は送信機、9−6は送信
アンテナである。次に無線受信局9Bの構成を説明する
と、9−7は受信アンテナ、9−8は受信機、9−9−
1〜9−9−nはスペクトラム逆拡散回路、9−10−
1〜9−10−nは復調回路、9−11は並/直列変換
回路、9−12は復調信号である。2. Description of the Related Art In wireless communication, there is spread spectrum communication as a communication method having excellent interference resistance, and a method of performing spread spectrum with a plurality of spread codes as a method for increasing an information transmission speed while keeping a processing gain constant. Is JP-A-6
It is disclosed in 3-283246. FIG. 9 is a diagram for explaining a conventional spread spectrum communication system using a plurality of spread codes. In the figure, 9A is a wireless transmission station and 9B is a wireless reception station. First, the configuration of the wireless transmission station will be described. 9-1 is an information signal to be transmitted, 9-2 is a serial / parallel conversion circuit, 9-3-1 to 9-3-n are spread spectrum circuits, and 9-4. Is a synthesizing circuit, 9-5 is a transmitter, and 9-6 is a transmitting antenna. Next, the configuration of the wireless reception station 9B will be described. 9-7 is a receiving antenna, 9-8 is a receiver, and 9-9-
1-9-9-n are spectrum despreading circuits, 9-10-
1-9-10-n are demodulation circuits, 9-11 are parallel / serial conversion circuits, and 9-12 are demodulation signals.
【0003】次にこのスペクトラム無線通信方式の原理
について説明する。無線送信局9Aでは、情報信号9−
1が直/並列変換回路9−2に入力され、各々同一の情
報量を有しかつ元の信号9−1の1/nの伝送速度を有
するn個の並列な信号S1〜Snに変換される。この直/
並列変換回路9−2のn個の出力信号S1〜Snは、それ
ぞれ、スペクトラム拡散回路9−3−1〜9−3−nに
入力され、各々異なった拡散符号が乗じられ、スペクト
ラム拡散のなされたn個の信号SS1〜SSnに変換され
る。このようにしてスペクトラム拡散のなされたn個の
信号SS1〜SSnは合成回路9−4によって合成された
後、送信機9−5によりアンテナ9−6を介して送信さ
れる。Next, the principle of this spectrum wireless communication system will be described. In the wireless transmission station 9A, the information signal 9-
1 is input to the serial / parallel conversion circuit 9-2, and is converted into n parallel signals S 1 to S n each having the same amount of information and a transmission rate of 1 / n of the original signal 9-1. To be converted. This straight /
The n output signals S 1 to S n of the parallel conversion circuit 9-2 are input to the spread spectrum circuits 9-3-1 to 9-3-n, respectively, and are multiplied by different spread codes to spread the spectrum. Are converted into n signals SS 1 to SS n . After n signals SS 1 ~ SS n has been made of the spread spectrum is synthesized by the synthesis circuit 9-4 in this manner, it is transmitted via the antenna 9-6 by the transmitter 9-5.
【0004】無線受信局9Bでは、無線信号が受信アン
テナ9−7を介し受信機9−8によって受信され、この
受信信号がn個のスペクトラム逆拡散回路9−9−1〜
9−9−nに入力される。そして、これらのスペクトラ
ム逆拡散回路9−9−1〜9−9−nにより、無線送信
局6Aのスペクトラム拡散回路9−3−1〜9−3−n
において使用したのと同じ拡散符号を用いたスペクトラ
ム逆拡散が行われ、この結果得られるn個の出力信号が
それぞれ復調回路9−10−1〜9−10−nによって
復調される。そして、n個の復調回路9−10−1〜9
−10−nの出力信号は並/直列変換回路9−11に入
力され、この並/直列変換回路9−11では、前記直/
並列変換回路9−2で行われた逆の手順によりn個の並
列な信号が直列な信号に合成され、復調信号9−12と
して出力される。In the radio receiving station 9B, a radio signal is received by a receiver 9-8 via a receiving antenna 9-7, and the received signal is supplied to n spectrum despreading circuits 9-9-1 to 9-9-1.
9-9-n is input. Then, these spectrum despreading circuits 9-9-1 to 9-9-n are used to spread spectrum circuits 9-3-1 to 9-3-n of the wireless transmission station 6A.
The spectrum despreading is performed using the same spreading code as that used in, and the resulting n output signals are demodulated by the demodulation circuits 9-10-1 to 9-10-n, respectively. Then, the n demodulation circuits 9-10-1 to 9-10
The output signal of −10-n is input to the parallel / serial conversion circuit 9-11.
By the reverse procedure performed in the parallel conversion circuit 9-2, n parallel signals are combined into a serial signal and output as a demodulated signal 9-12.
【0005】図10は従来の技術のスペクトラムの例を
示す図である。同図において、(a)はスペクトラム拡
散回路9−3−1〜9−3−nの入力信号S1〜Snのス
ペクトラム、(b)はスペクトラム拡散回路9−3−1
〜9−3−nの出力信号SS 1〜SSnのスペクトラム、
(c)は合成回路9−4の出力信号のスペクトラムであ
る。ここで、直/並列変換されたn個の信号は、スペク
トラム拡散される前の周波数帯域幅が等しく、スペクト
ラム拡散された後の周波数帯域幅も等しいので、スペク
トラム拡散を行うことによって得られる利得、すなわち
処理利得も等しい。FIG. 10 shows an example of the spectrum of the prior art.
FIG. In the figure, (a) is the spectrum expansion
Input signal S of the dispersion circuits 9-3-1 to 9-3-n1~ SnSu
Spectrum, (b) is a spread spectrum circuit 9-3-1
~ 9-3-n output signal SS 1~ SSnSpectrum of
(C) is the spectrum of the output signal of the synthesis circuit 9-4.
It Here, the serial / parallel converted n signals are
The frequency bandwidth before tram spreading is equal,
Since the frequency bandwidth after lamb spreading is also equal,
The gain obtained by performing tram spreading, ie
The processing gain is also equal.
【0006】[0006]
【発明が解決しようとする課題】以上説明したように、
従来のスペクトラム拡散無線通信方式において、情報信
号を構成する各信号は、各々の所要品質に関係なく同一
条件で伝送される。As described above,
In the conventional spread spectrum wireless communication system, each signal forming the information signal is transmitted under the same condition regardless of the required quality.
【0007】しかしながら、情報信号を伝送する際に要
求されるビット誤り率、シンボル誤り率、フレーム誤り
率等の所要品質は、伝送すべき情報信号の構成する各信
号の種類によって異なる場合が多々ある。このため、全
ての信号について所要品質を満たした条件で伝送を行う
ことが困難になるといった事態が生じる。However, the required quality such as the bit error rate, the symbol error rate, the frame error rate, etc. required for transmitting the information signal often differs depending on the type of each signal constituting the information signal to be transmitted. . Therefore, it may be difficult to perform transmission on all signals under the condition that the required quality is satisfied.
【0008】この発明は以上説明した事情に鑑みてなさ
れたものであり、複数の情報信号を各々の所要品質に見
合った形態で伝送するスペクトラム拡散無線通信方式を
提供することを目的としている。The present invention has been made in view of the circumstances described above, and it is an object of the present invention to provide a spread spectrum wireless communication system for transmitting a plurality of information signals in a form suitable for each required quality.
【0009】[0009]
【課題を解決するための手段】上記課題を解決するた
め、本発明では、無線送信局において、複数の情報信号
に対しスペクトラム拡散を施した後、所要の品質に応じ
た電力に調整し、この電力調整のされた信号を合成して
送信する。In order to solve the above problems, according to the present invention, in a wireless transmission station, a plurality of information signals are spread spectrum, and then the power is adjusted according to a required quality. The power adjusted signals are combined and transmitted.
【0010】すなわち、請求項1に係るスペクトラム拡
散無線通信用無線送信局において、伝送速度がV1,
V2,…,Vn(nは2以上の整数)であるn個の所要品
質に応じて異なる情報信号に対し、V1・K1=V2・K2
=……=Vn・Knなる条件を満足する拡散率K1,K2,
…,Kn(≠1)を各々有する各拡散符号を各々乗じる
ことによりスペクトラム拡散のなされたn個の信号(S
S1〜SSn)を各々生成し、これらのスペクトラム拡散
のなされた各信号(SS1〜SSn)の電力を、前記所要
品質が高い信号は高い送信電力を有し前記所要品質が低
い信号は低い送信電力を有するように調整し、この電力
の調整された各信号(SA1〜SAn)を合成し、同一周
波数帯の無線信号として送信する。That is, in the spread spectrum wireless communication wireless transmission station according to claim 1, the transmission rate is V 1 ,
V 2, ..., V n ( n is an integer of 2 or more) for different information signals in response to the n-number of the required quality is, V 1 · K 1 = V 2 · K 2
= ... = V n · K n Diffusivities K 1 , K 2 , which satisfy the condition
, N signals (S) which have been spread spectrum by multiplying each spreading code each having K n (≠ 1)
S 1 to SS n ) are generated, and the power of each of these spread spectrum signals (SS 1 to SS n ) is generated, the signal with high required quality has high transmission power and the signal with low required quality. Adjusts so as to have a low transmission power, synthesizes the signals (SA 1 to SA n ) whose powers have been adjusted, and transmits them as a radio signal in the same frequency band.
【0011】また、請求項2に係るスペクトラム拡散無
線通信用無線受信局において、伝送速度がV1,V2,
…,Vn(nは2以上の整数)であるn個の所要品質に
応じて異なる情報信号に対し、V1・K1=V2・K2=…
…=Vn・Knなる条件を満足する拡散率K1,K2,…,
Kn(≠1)を各々有する各拡散符号を各々乗じること
によりスペクトラム拡散のなされたn個の信号(SS1
〜SSn)を各々生成し、これらのスペクトラム拡散の
なされた各信号(SS1〜SSn)の電力を、前記所要品
質が高い信号は高い送信電力を有し前記所要品質が低い
信号は低い送信電力を有するように調整し、この電力の
調整された各信号(SA1〜SAn)を合成し、同一周波
数帯の無線信号として無線送信局から送信される無線信
号を受信し、受信した前記無線信号に対し、前記複数の
拡散符号を用いたスペクトラム逆拡散を各々施して前記
n個の情報信号を復調する。In the radio receiving station for spread spectrum radio communication according to claim 2, the transmission speeds are V 1 , V 2 ,
, V n (n is an integer of 2 or more), V 1 · K 1 = V 2 · K 2 = ...
Diffusivities K 1 , K 2 , ..., Which satisfy the condition: V n · K n
N signals (SS 1 ) that have been spread spectrum by multiplying each spreading code each having K n (≠ 1)
~ SS n ) are generated and the power of each signal (SS 1 to SS n ) subjected to spread spectrum is high, the signal with high required quality has high transmission power, and the signal with low required quality is low. The signals are adjusted to have a transmission power, the signals (SA 1 to SA n ) having the adjusted powers are combined, and a radio signal transmitted from a radio transmission station as a radio signal in the same frequency band is received and received. Each of the n information signals is demodulated by subjecting the radio signal to spectrum despreading using the plurality of spread codes.
【0012】また、請求項3に係るスペクトラム拡散無
線通信用無線送信局において、伝送すべき情報信号を、
伝送速度がV1,V2,…,Vnであるn個(nは2以上
の整数)の所要品質に応じて異なる情報信号に分割し、
この分割された各情報信号に対し、相互に異なったn種
類の拡散符号であって、V1・K1=V2・K2=……=V
n・Knなる条件を満足する拡散率K1,K2,…,K
n(≠1)を各々有する各拡散符号を各々乗じることに
よりスペクトラム拡散のなされたn個の信号(SS 1〜
SSn)を各々生成し、これらのスペクトラム拡散のな
された各信号(SS1〜SSn)の電力を、前記所要品質
が高い信号は高い送信電力を有し前記所要品質が低い信
号は低い送信電力を有するように調整し、この電力の調
整された各信号(SA1〜SAn)を合成し、同一周波数
帯の無線信号として送信する。Further, there is no spread spectrum according to claim 3.
In the wireless transmission station for line communication, the information signal to be transmitted is
Transmission speed is V1, V2,,, VnN (n is 2 or more)
Divided into different information signals according to the required quality of
For each of these divided information signals, n different types
A spreading code of the class1・ K1= V2・ K2= …… = V
n・ KnDiffusivity K that satisfies the condition1, K2, ..., K
nTo multiply each spreading code each with (≠ 1)
N more spread spectrum signals (SS 1~
SSn) For each of these
Each signal (SS1~ SSn) Power, the required quality
Signal with high transmission power has high transmission power and the signal with low required quality is
Signal is adjusted to have a low transmit power and this power
Adjusted signals (SA1~ SAn) Are combined and the same frequency
It is transmitted as a band radio signal.
【0013】また、請求項4に係るスペクトラム拡散無
線通信用無線受信局において、伝送すべき情報信号を、
伝送速度がV1,V2,…,Vnであるn個(nは2以上
の整数)の所要品質に応じて異なる情報信号に分割し、
この分割された各情報信号に対し、相互に異なったn種
類の拡散符号であって、V1・K1=V2・K2=……=V
n・Knなる条件を満足する拡散率K1,K2,…,K
n(≠1)を各々有する各拡散符号を各々乗じることに
よりスペクトラム拡散のなされたn個の信号(SS 1〜
SSn)を各々生成し、これらのスペクトラム拡散のな
された各信号(SS1〜SSn)の電力を、前記所要品質
が高い信号は高い送信電力を有し前記所要品質が低い信
号は低い送信電力を有するように調整し、この電力の調
整された各信号(SA1〜SAn)を合成し、同一周波数
帯の無線信号として無線送信局から送信される無線信号
を受信し、受信した前記無線信号に対し、前記複数の各
拡散符号を用いたスペクトラム逆拡散を各々施し、これ
らのスペクトラム逆拡散の結果得られる各信号を復調
し、この復調により得られた各信号を、前記無線送信局
において前記情報信号を分割した手順と逆の手順に従っ
て合成する。Further, there is no spread spectrum according to claim 4.
In the wireless receiving station for line communication, the information signal to be transmitted,
Transmission speed is V1, V2,,, VnN (n is 2 or more)
Divided into different information signals according to the required quality of
For each of these divided information signals, n different types
A spreading code of the class1・ K1= V2・ K2= …… = V
n・ KnDiffusivity K that satisfies the condition1, K2, ..., K
nTo multiply each spreading code each with (≠ 1)
N more spread spectrum signals (SS 1~
SSn) For each of these
Each signal (SS1~ SSn) Power, the required quality
Signal with high transmission power has high transmission power and the signal with low required quality is
Signal is adjusted to have a low transmit power and this power
Adjusted signals (SA1~ SAn) Are combined and the same frequency
Radio signal transmitted from radio transmission station as band radio signal
For each of the plurality of received wireless signals.
Performs spectrum despreading using a spread code.
Demodulates each signal resulting from spectrum despreading
Then, each signal obtained by this demodulation is transmitted to the wireless transmission station.
Follow the procedure opposite to the procedure for dividing the information signal in
To synthesize.
【0014】[0014]
【作用】請求項1に係るスペクトラム拡散無線通信用無
線送信局および請求項2に係るスペクトラム拡散無線通
信用無線受信局によれば、無線送信局に供給された各情
報信号はそれらの伝送速度に反比例した拡散率でスペク
トラム拡散が行われた後、各々の電力が各々の所要の品
質に応じて、所要品質の高い信号は高い送信電力を有し
所要品質の低い信号は低い送信電力を有するように調整
され、この電力の調整された各信号が合成され同一周波
数帯の無線信号として無線送信局から送信され、無線受
信局によって受信されるので、送信電力および拡散率の
両方を変えることにより、各信号の所要品質に見合った
条件での伝送を行うことができる。According to the spread spectrum wireless communication wireless transmitting station of the first aspect and the spread spectrum wireless communication wireless receiving station of the second aspect, the respective information signals supplied to the wireless transmitting station have their transmission speeds. After spread spectrum is performed with an inversely proportional spreading factor, it is assumed that each power has a high transmission power and a low quality signal has a low transmission power according to each required quality. Is adjusted to, the power-adjusted signals are combined and transmitted as a radio signal in the same frequency band from the radio transmitting station, and received by the radio receiving station, so by changing both the transmission power and the spreading factor, It is possible to perform transmission under the conditions that match the required quality of each signal.
【0015】請求項3に係るスペクトラム拡散無線通信
用無線送信局および請求項4に係るスペクトラム拡散無
線通信用無線受信局によれば、無線送信局に供給された
各情報信号は各々所定の伝送速度V1〜Vnを有するn個
の情報信号に分割される。そして、分割された各情報信
号は各々の伝送速度に反比例した拡散率でスペクトラム
拡散が行われた後、各々の電力が各々の所要の品質に応
じて、所要品質の高い信号は高い送信電力を有し所要品
質の低い信号は低い送信電力を有するように調整され、
この電力の調整された各信号が合成され同一周波数帯の
無線信号として無線送信局から送信され、無線受信局に
よって受信されるので、送信電力および拡散率の両方を
変えることにより、各信号の所要品質に見合った条件で
の伝送を行うことができる。According to the radio transmitting station for spread spectrum wireless communication according to claim 3 and the radio receiving station for spread spectrum wireless communication according to claim 4, each information signal supplied to the radio transmitting station has a predetermined transmission rate. It is divided into n information signals having V 1 to V n . Then, each divided information signal undergoes spread spectrum at a spreading factor that is inversely proportional to each transmission rate, and then each signal has a high required power according to its required quality. Signals with low required quality are tuned to have low transmit power,
The individual signals whose power has been adjusted are combined and transmitted as a wireless signal in the same frequency band from the wireless transmitting station and received by the wireless receiving station.Therefore, by changing both the transmission power and the spreading factor, It is possible to perform transmission under the conditions suitable for quality.
【0016】[0016]
【発明の実施の形態】以下、図面を参照し本発明の実施
例について説明する。
A.第1実施例
(1)実施例の構成
図1は本発明の第1実施例の構成を示すブロック図であ
る。同図において、1Aは無線送信局、1Bは無線受信
局である。無線送信局1Aにおいて、1−1は伝送すべ
き情報信号、1−2は直/並列変換回路、1−3−1〜
1−3−nはスペクトラム拡散回路、1−4−1〜1−
4−nは送信電力制御回路、1−5は合成回路、1−6
は送信機、1−7は送信アンテナである。また、無線受
信局1Bにおいて、1−9は受信アンテナ、1−10は
受信機、1−10−1〜1−10−nはスペクトラム逆
拡散回路、1−11−1〜1−11−nは復調回路、1
−12は並/直列変換回路、1−13は復調信号であ
る。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. A. First Embodiment (1) Configuration of the Embodiment FIG. 1 is a block diagram showing the configuration of the first embodiment of the present invention. In the figure, 1A is a wireless transmission station and 1B is a wireless reception station. In the wireless transmission station 1A, 1-1 is an information signal to be transmitted, 1-2 is a serial / parallel conversion circuit, and 1-3-1 to 1-3.
1-3-n is a spread spectrum circuit, 1-4-1 to 1-
4-n is a transmission power control circuit, 1-5 is a combining circuit, 1-6
Is a transmitter and 1-7 is a transmission antenna. Further, in the wireless reception station 1B, 1-9 is a receiving antenna, 1-10 is a receiver, 1-10-1 to 1-10-n are spectrum despreading circuits, 1-11-1 to 1-11-n. Is a demodulator circuit, 1
-12 is a parallel / serial conversion circuit, and 1-13 is a demodulation signal.
【0017】(2)実施例の動作
図2は無線送信局1Aの各部の信号のスペクトラムを表
わすものであり、同図において、(a)はスペクトラム
拡散回路1−3−1〜1−3−nの各入力信号S1〜Sn
のスペクトラム、(b)はスペクトラム拡散回路1−
3−1〜1−3−nの各出力信号SS1〜SSnのスペク
トラム、(c)は送信電力制御回路1−4−1〜1−4
−nの出力信号のスペクトラム、(d)は合成回路1−
5の出力信号のスペクトラムである。以下、前掲図1に
加えてこの図2を参照し、本実施例の動作を説明する。(2) Operation of the embodiment FIG. 2 shows the spectrum of the signal of each part of the wireless transmission station 1A. In FIG. 2, (a) shows the spread spectrum circuit 1-3-1 to 1-3-3. n input signals S 1 to S n
Spectrum, (b) is the spread spectrum circuit 1-
3-1~1-3-n output signals of the SS 1 ~ SS n of the spectrum, (c) the transmission power control circuit 1-4-1~1-4
-N is the spectrum of the output signal, (d) is the synthesis circuit 1-
5 is the spectrum of the output signal of FIG. The operation of this embodiment will be described below with reference to FIG. 2 in addition to FIG.
【0018】情報信号1−1は、所要品質に応じて、直
/並列変換回路1−2によって伝送速度が等しいn個の
情報信号S1〜Snに分割される。これらの情報信号S1
〜Snは、各々の伝送速度が等しいので同じ周波数帯域
幅を有する。各情報信号S1〜Snは、各々、スペクトラ
ム拡散回路1−3−1〜1−3−nに入力され、相互に
異なる拡散符号を用いたスペクトラム拡散が行われる。
ここで、各拡散符号は拡散率の等しいものが用いられる
ため、各スペクトラム拡散回路1−3−1〜1−3−n
から、全く同一の周波数帯域幅にスペクトラム拡散され
た信号SS1〜SSnが得られる。The information signal 1-1 is divided by the serial / parallel conversion circuit 1-2 into n information signals S 1 to S n having the same transmission rate according to the required quality. These information signals S 1
S n have the same frequency bandwidth because their transmission rates are equal. The information signals S 1 to S n are input to the spread spectrum circuits 1-3-1 to 1-3-n, respectively, and spread spectrum is performed using mutually different spread codes.
Here, since each spreading code has the same spreading factor, each spread spectrum circuit 1-3-1 to 1-3-n
From the above, signals SS 1 to SS n spectrum-spread in exactly the same frequency bandwidth can be obtained.
【0019】このようにして得られたスペクトラム拡散
のなされたn個の信号SS1〜SSnは送信電力制御回路
1−4−1〜1−4−nによって各々の電力が制御され
る。この結果、所要品質の高い信号(例えば図2では信
号SS1)は高い送信電力を有する信号(例えば信号S
A1)となって出力され、所要品質の低い信号(例えば
図2では信号SSn)は低い送信電力を有する信号(例
えば信号SAn)となって出力される。そして、送信電
力制御回路1−4−1〜1−4−nの各出力信号が合成
回路1−5によって合成された後、送信機1−6に供給
され、送信アンテナ1−7から同一周波数帯の無線信号
として送信される。[0019] n signals SS 1 ~ SS n has been made of the spread spectrum obtained in this way each of the power is controlled by the transmit power control circuit 1-4-1~1-4-n. As a result, a signal with high required quality (for example, signal SS 1 in FIG. 2) is a signal with high transmission power (for example, signal S 1 ).
A 1 ), which is output as a signal having a low required quality (for example, signal SS n in FIG. 2), is output as a signal (for example, signal SA n ) having low transmission power. Then, after the output signals of the transmission power control circuits 1-4-1 to 1-4-n are combined by the combining circuit 1-5, they are supplied to the transmitter 1-6, and the same frequency is transmitted from the transmission antenna 1-7. It is transmitted as a band radio signal.
【0020】そして、無線受信局1Bでは、受信信号は
n個の逆拡散回路1−10−1〜1−10−nに入力さ
れ、これらの逆拡散回路では無線送信局1Aと同じ拡散
符号で逆拡散が行われ、この結果得られるn個の出力信
号は各々復調回路1−11−1〜1−11−nに入力さ
れる。そして、復調回路1−11−1〜1−11−nの
各出力信号は、並/直列変換回路1−12によって直列
信号に変換され、復調信号として出力される。In the radio receiving station 1B, the received signal is input to the n despreading circuits 1-10-1 to 1-10-n, and these despreading circuits use the same spreading code as the radio transmitting station 1A. The despreading is performed, and the n output signals obtained as a result are input to the demodulation circuits 1-11-1 to 1-11-n, respectively. Then, each output signal of the demodulation circuits 1-11-1 to 1-11-n is converted into a serial signal by the parallel / serial conversion circuit 1-12 and output as a demodulated signal.
【0021】B.第2実施例
図3は本発明の第2実施例の構成を示すブロック図であ
る。同図において、3Aは無線送信局、3Bは無線受信
局である。無線送信局3Aにおいて、3−1は伝送すべ
き情報信号、3−2は信号分割回路、3−3−1〜3−
3−nはスペクトラム拡散回路、3−4−1〜3−4−
nは送信電力制御回路、3−5は合成回路、3−6は送
信機、3−7は送信アンテナである。また、無線受信局
3Bにおいて、3−9は受信アンテナ、3−10は受信
機、3−10−1〜3−10−nはスペクトラム逆拡散
回路、3−11−1〜3−11−nは復調回路、3−1
2は信号合成回路、3−13は復調信号である。本実施
例の構成は以下の点において上記第1実施例のものと異
なっている。B. Second Embodiment FIG. 3 is a block diagram showing the configuration of the second embodiment of the present invention. In the figure, 3A is a wireless transmission station, and 3B is a wireless reception station. In the wireless transmission station 3A, 3-1 is an information signal to be transmitted, 3-2 is a signal division circuit, and 3-3-1 to 3-3-
3-n is a spread spectrum circuit, 3-4-1 to 3-4-
n is a transmission power control circuit, 3-5 is a combining circuit, 3-6 is a transmitter, and 3-7 is a transmission antenna. In the wireless reception station 3B, 3-9 is a receiving antenna, 3-10 is a receiver, 3-10-1 to 3-10-n are spectrum despreading circuits, and 3-11-1 to 3-11-n. Is a demodulation circuit, 3-1
2 is a signal synthesizing circuit, and 3-13 is a demodulation signal. The structure of this embodiment is different from that of the first embodiment in the following points.
【0022】a.第1実施例における直/並列変換回路
1−2および並/直列変換回路1−12が信号分割回路
3−2および信号合成回路3−12に置き換えられてい
る点。
b.スペクトラム拡散回路3−3−1〜3−3−nにお
いて、必要に応じて拡散率の異なった拡散符号を使用す
るようにした点。A. The point that the serial / parallel conversion circuit 1-2 and the parallel / serial conversion circuit 1-12 in the first embodiment are replaced by a signal division circuit 3-2 and a signal synthesis circuit 3-12. b. In the spread spectrum circuits 3-3-1 to 3-3-n, spread codes having different spreading factors are used as needed.
【0023】<信号分割回路の構成例>図4は本実施例
における信号分割回路3−2が行う信号分割処理を説明
する図である。この信号分割処理では、一定時間毎に、
その時間内に入力された情報信号(図4(a))を複数
の情報信号D1〜Dnに分割する(図4(b))。そし
て、これらの情報信号D1〜Dnを各々の情報量に拘わら
ず一定時間内に出力する(図4(c))。従って、分割
された各情報信号のうち情報量の多い情報信号は高い伝
送速度で出力され、情報量の少ない情報信号は低い伝送
速度で出力されることとなる。本実施例における信号分
割回路3−2は以上のような処理を行うことにより情報
信号3−1を各々伝送速度がV1〜Vnである複数の情報
信号S1〜Snに分割するものである。<Structural Example of Signal Division Circuit> FIG. 4 is a diagram for explaining the signal division processing performed by the signal division circuit 3-2 in this embodiment. In this signal division processing, at regular time intervals,
Its time input information signal in (FIG. 4 (a)) is divided into a plurality of information signals D 1 to D n (Figure 4 (b)). Then, these information signals D 1 to D n are output within a fixed time regardless of the amount of each information (FIG. 4C). Therefore, among the divided information signals, an information signal having a large amount of information is output at a high transmission rate, and an information signal having a small amount of information is output at a low transmission rate. The signal dividing circuit 3-2 in this embodiment divides the information signal 3-1 into a plurality of information signals S 1 to S n each having a transmission rate of V 1 to V n by performing the above processing. Is.
【0024】図5に信号分割処理を行う回路の具体的構
成例を示す。同図において、5−1は直/並列変換回
路、5−2は合成回路である。伝送速度が3a(bp
s)で表される信号を2a(bps)である信号とa
(bps)で表される信号とに分割する場合を示す。情
報信号は直/並列変換回路5−1に入力され、伝送速度
がa(bps)で表される3つの信号に変換され、その
3つの信号のうち2つの信号は合成回路5−2に入力さ
れ、伝送速度が2a(bps)で表される信号に合成さ
れる。FIG. 5 shows a concrete example of the configuration of a circuit for performing signal division processing. In the figure, 5-1 is a serial / parallel conversion circuit, and 5-2 is a combining circuit. Transmission speed is 3a (bp
The signal represented by s) is 2a (bps) and a
The case of division into a signal represented by (bps) is shown. The information signal is input to the serial / parallel conversion circuit 5-1 and converted into three signals whose transmission rate is represented by a (bps), and two signals of the three signals are input to the synthesis circuit 5-2. And are combined into a signal having a transmission rate of 2a (bps).
【0025】(2)実施例の動作
図6は無線送信局3Aの各部の信号のスペクトラムを表
わすものであり、同図において、(a)はスペクトラム
拡散回路3−3−1〜3−3−nの各入力信号S1〜Sn
のスペクトラム、(b)はスペクトラム拡散回路3−3
−1〜3−3−nの各出力信号SS1〜SSnのスペクト
ラム、(c)は送信電力制御回路3−4−1〜3−4−
nの出力信号のスペクトラム、(d)は合成回路3−5
の出力信号のスペクトラムである。以下、前掲図3に加
えてこの図6を参照し、本実施例の動作を説明する。(2) Operation of the embodiment FIG. 6 shows the spectrum of the signal of each part of the wireless transmission station 3A. In FIG. 6, (a) shows the spread spectrum circuit 3-3-1 to 3-3-3. n input signals S 1 to S n
Spectrum, (b) is spread spectrum circuit 3-3
Spectrum of the output signal SS 1 ~ SS n of -1~3-3-n, (c) the transmission power control circuit 3-4-1~3-4-
n is the spectrum of the output signal, (d) is a combining circuit 3-5
Is the spectrum of the output signal of. The operation of this embodiment will be described below with reference to FIG. 6 in addition to FIG.
【0026】情報信号3−1は、所要品質に応じて、信
号分割回路3−2によって伝送速度がV1,V2,…,V
n で表されるn個の情報信号S1〜Snに分割される。こ
れらの情報信号S1〜Snは、各々の伝送速度に応じた周
波数帯域幅を有する。例えば図6(a)においては、情
報信号S1は低い伝送速度で出力されたものであり、こ
のため周波数帯域幅が狭くなっている。これに対し、情
報信号Snは高い伝送速度で出力されたものであり、こ
のため周波数帯域幅が広くなっている。The signal speed of the information signal 3-1 is V 1 , V 2 , ..., V by the signal dividing circuit 3-2 according to the required quality.
is divided into n information signal S 1 to S n, represented by n. These information signals S 1 to S n have frequency bandwidths corresponding to their respective transmission rates. For example, in FIG. 6A, the information signal S 1 is output at a low transmission rate, so that the frequency bandwidth is narrow. On the other hand, the information signal S n is output at a high transmission rate and therefore has a wide frequency bandwidth.
【0027】このように周波数帯域幅に広狭のある情報
信号S1〜Snは、各々、スペクトラム拡散回路3−3−
1〜3−3−nに入力される。そして、各信号S1〜Sn
に対し、相互に異なる拡散符号を用いたスペクトラム拡
散が行われるのであるが、伝送速度が高く、周波数帯域
幅の広い情報信号(例えば図6では信号Sn)に対して
は拡散率の低い拡散符号を使用したスペクトラム拡散が
なされる。これに対し、伝送速度が低く、周波数帯域幅
の狭い情報信号(例えば図6では信号S1)に対しては
拡散率の高い拡散符号を使用したスペクトラム拡散がな
される。より厳密に述べると、伝送速度V1〜Vnを有す
る各情報信号S1〜Snに対し、上記条件V1×K1=V2
×K2=…=Vn×Knを満足する拡散率K1〜Knの拡散
符号を用いたスペクトラム拡散がなされる。この結果、
各スペクトラム拡散回路3−3−1〜3−3−nから、
全く同一の周波数帯域幅にスペクトラム拡散された信号
SS 1〜SSnが得られる。Information having a wide and narrow frequency bandwidth in this way
Signal S1~ SnAre spread spectrum circuits 3-3-
1 to 3-3-n. And each signal S1~ Sn
However, the spread spectrum using different spreading codes
However, the transmission speed is high and the frequency band
A wide information signal (for example, signal S in FIG. 6)n) Against
Is a spread spectrum using a spreading code with a low spreading factor
Done. In contrast, the transmission speed is low and the frequency bandwidth is
Narrow information signal (for example, signal S in FIG. 6)1) For
There is no spread spectrum using a spreading code with a high spreading factor.
To be done. More specifically, the transmission speed V1~ VnHave
Each information signal S1~ SnIn contrast, the above condition V1× K1= V2
× K2= ... = Vn× KnDiffusivity K that satisfies1~ KnDiffusion
Spread spectrum is performed using a code. As a result,
From each spread spectrum circuit 3-3-1 to 3-3-n,
Signal spread spectrum in the same frequency bandwidth
SS 1~ SSnIs obtained.
【0028】また、伝送速度に着目すると、スペクトラ
ム拡散された信号SS1〜SSnの伝送速度は拡散される
前の信号S1〜Snの伝送速度V1〜Vnと各々に適用され
る拡散率K1〜Knの積として表される。従って、スペク
トラム拡散された後の信号SSiの伝送速度はVi×Ki
と表されるが、V1×K1=V2×K2=…=Vn×Knであ
るのでn個のスペクトラム拡散回路3−3−1〜3−3
−nの出力信号SS1〜SSnの伝送速度は全て等しくな
る。Moreover, when focusing on the transmission rate, the transmission rate of the spread spectrum signal SS 1 ~ SS n is applied to each and the transmission speed V 1 ~V n of the previous signal S 1 to S n to be spread It is expressed as the product of the diffusivities K 1 to K n . Therefore, the transmission rate of the signal SS i after spectrum spread is V i × K i
However, since V 1 × K 1 = V 2 × K 2 = ... = V n × K n , n number of spread spectrum circuits 3-3-1 to 3-3
Transmission rate of the output signal SS 1 ~ SS n of -n are all equal.
【0029】このようにして得られたスペクトラム拡散
のなされたn個の信号SS1〜SSnは、上記第1実施例
と同様、送信電力制御回路3−4−1〜3−4−nによ
って各々の電力が制御される。図6においては、信号S
S1が高い送信電力を有する信号SA1として出力され、
信号SSnが低い送信電力を有する信号SAnとして出力
される様子が例示されている。そして、送信電力制御回
路1−4−1〜1−4−nの各出力信号が合成回路1−
5によって合成された後、送信機1−6に供給され、送
信アンテナ1−7から同一周波数帯の無線信号として送
信される。[0029] n signals SS 1 ~ SS n it has been made of the spread spectrum obtained in this way, similarly to the first embodiment, the transmission power control circuit 3-4-1~3-4-n The power of each is controlled. In FIG. 6, the signal S
S 1 is output as a signal SA 1 with high transmission power,
It is illustrated that the signal SS n is output as the signal SA n having low transmission power. Then, the respective output signals of the transmission power control circuits 1-4-1 to 1-4-n are combined into the synthesis circuit 1-.
After being combined by 5, the signal is supplied to the transmitter 1-6 and transmitted from the transmitting antenna 1-7 as a radio signal in the same frequency band.
【0030】そして、無線受信局3Bでは、受信信号は
n個の逆拡散回路3−10−1〜3−10−nに入力さ
れ、これらの逆拡散回路では無線送信局3Aと同じ拡散
符号で逆拡散が行われ、この結果得られるn個の出力信
号は各々復調回路3−11−1〜3−11−nに入力さ
れる。そして、復調回路3−11−1〜3−11−nの
各出力信号は、信号合成回路3−12に入力され、この
信号合成回路3−12では、前記信号分割回路3−2で
行われた逆の手順で信号が合成され、復調信号として出
力される。In the radio receiving station 3B, the received signal is input to the n despreading circuits 3-10-1 to 3-10-n, and these despreading circuits use the same spreading code as the radio transmitting station 3A. Despreading is performed, and the n output signals obtained as a result are input to the demodulation circuits 3-11-1 to 3-11-n. Then, the respective output signals of the demodulation circuits 3-11-1 to 3-11-n are input to the signal combining circuit 3-12, and in the signal combining circuit 3-12, the signal dividing circuit 3-2 is performed. The signals are combined in the reverse procedure and output as a demodulated signal.
【0031】以上説明したように、本実施例は、送信電
力の調整と拡散率の設定を併用することにより各信号を
各々の所要品質を満たす形態で送信するものである。
C.第3実施例
(1)実施例の構成
図7は本発明の第3実施例の構成を示すブロック図であ
る。同図において、7Aは無線送信局、7Bは無線受信
局である。無線送信局7Aにおいて、7−1−1〜7−
1−nは各々伝送すべき情報信号、7−2−1〜7−2
−nは直接拡散回路、7−3−1〜7−3−nは送信電
力制御回路、7−4は合成回路、7−5は送信機、7−
6は送信アンテナである。また、無線受信局7Bにおい
て、7−7は受信アンテナ、7−8は受信機、7−9−
1〜7−9−nは逆拡散回路、7−10−1〜7−10
−nは復調回路、7−11−1〜7−11−nは各々復
調信号である。As described above, in the present embodiment, each signal is transmitted in a form satisfying the required quality by using both the adjustment of the transmission power and the setting of the spreading factor. C. Third Embodiment (1) Configuration of the Embodiment FIG. 7 is a block diagram showing the configuration of the third embodiment of the present invention. In the figure, 7A is a wireless transmission station and 7B is a wireless reception station. In the wireless transmission station 7A, 7-1-1 to 7-
1-n are information signals to be transmitted, 7-2-1 to 7-2
-N is a direct spread circuit, 7-3-1 to 7-3-n is a transmission power control circuit, 7-4 is a combining circuit, 7-5 is a transmitter, 7-
6 is a transmitting antenna. In the wireless reception station 7B, 7-7 is a receiving antenna, 7-8 is a receiver, and 7-9-
1 to 7-9-n are despreading circuits, 7-10-1 to 7-10
-N is a demodulation circuit, and 7-11-1 to 7-11-n are demodulation signals.
【0032】(2)実施例の動作
上記第2実施例では、1つの情報信号を分割してスペク
トラム拡散を行ったが、本実施例において、無線送信局
7Aは伝送速度がV1〜Vnである複数の情報信号7−1
−1〜7−1−nを受け付け、これらに対し、各々の伝
送速度に反比例した拡散率の拡散符号を用いたスペクト
ラム拡散を施して伝送する。また、無線受信局7Bは、
無線送信局7Aからの受信信号に無線送信局側と同じ拡
散符号によるスペクトラム逆拡散を施し、復調信号5−
11−1〜5−11−nを出力する。すなわち、送信側
での情報信号の分割および受信側での復調信号の合成を
行わない点のみが上記第2実施例と相違しており、他の
点は上記第2実施例と全く同様である。図8は無線送信
局7Aの各部の信号のスペクトラムを表わすものであ
り、同図において、(a)は情報信号7−1−1〜7−
1−nのスペクトラム、(b)は直接拡散回路7−2−
1〜7−2−nの各出力信号SS1〜SSnのスペクトラ
ム、(c)は送信電力制御回路7−3−1〜7−3−n
の出力信号のスペクトラム、(d)は合成回路7−4の
出力信号のスペクトラムである。(2) Operation of the embodiment In the second embodiment, one information signal is divided and spread spectrum is performed. In this embodiment, however, the wireless transmission station 7A has a transmission rate of V 1 to V n. Information signals 7-1
-1 to 7-1-n are received, and spectrum spread using a spreading code having a spreading factor inversely proportional to each transmission rate is applied to these and transmitted. In addition, the wireless receiving station 7B
The received signal from the wireless transmission station 7A is subjected to spectrum despreading using the same spreading code as on the wireless transmission station side, and the demodulated signal 5-
11-1 to 5-11-n are output. That is, the difference from the second embodiment is only that the transmitting side does not divide the information signal and the receiving side does not combine the demodulated signals, and other points are exactly the same as the second embodiment. . FIG. 8 shows a spectrum of a signal of each part of the wireless transmission station 7A. In FIG. 8, (a) shows information signals 7-1-1 to 7-.
1-n spectrum, (b) direct spread circuit 7-2-
1 to 7-2- n spectrum of each output signal SS 1 to SS n , (c) is transmission power control circuit 7-3-1 to 7-3-n
The spectrum of the output signal of (4) is the spectrum of the output signal of the synthesis circuit 7-4.
【0033】D.別の実施例
以上、本発明の実施例について説明したが、本発明の範
囲はこれに限定されるものではなく、例えば以下のよう
な変形も可能である。D. Other Embodiments Although the embodiments of the present invention have been described above, the scope of the present invention is not limited to these, and the following modifications are possible, for example.
【0034】上記第3実施例では、無線送信局7Aは伝
送速度がV1〜Vnである複数の情報信号7−1−1〜7
−1−nを受け付け、これらに対し、各々の伝送速度に
反比例した拡散率の拡散符号を用いたスペクトラム拡散
を施して伝送したが、同一の伝送速度で複数の情報信号
を受け取り同一の拡散率でスペクトラム拡散を施し、送
信電力のみを所要品質に合せて調整し送信してもよい。
上記各実施例では、スペクトラム拡散回路および逆スペ
クトラム拡散回路をベースバンド帯で構成する例につい
て説明したが、中間周波数帯の回路においても同等の効
果が得られる。In the third embodiment, the wireless transmission station 7A has a plurality of information signals 7-1-1 to 7-7 having transmission rates V 1 to V n.
-1-n was accepted and spread spectrum was applied to each of them by using a spread code having a spreading factor inversely proportional to each transmission rate, but the same spreading rate was received when a plurality of information signals were received at the same transmission rate. Alternatively, the spread spectrum may be applied, and only the transmission power may be adjusted and transmitted according to the required quality.
In each of the above-described embodiments, an example in which the spread spectrum circuit and the inverse spread spectrum circuit are configured in the base band band has been described, but the same effect can be obtained in a circuit in the intermediate frequency band.
【0035】[0035]
【発明の効果】以上説明したように、本発明によれば、
スペクトラム拡散後の複数の信号を各々の所要品質を考
慮した送信電力に調整し送信するようにしたので、所要
品質の異なった各情報信号を各々の所要品質に満たすよ
うに伝送することができるという効果がある。As described above, according to the present invention,
Since multiple signals after spread spectrum are adjusted to transmit power considering each required quality and transmitted, each information signal with different required quality can be transmitted so as to satisfy each required quality. effective.
【図1】 この発明の第1実施例によるスペクトラム拡
散無線通信方式を説明するブロック図である。FIG. 1 is a block diagram illustrating a spread spectrum wireless communication system according to a first embodiment of the present invention.
【図2】 同実施例における各部の信号のスペクトラム
を示す図である。FIG. 2 is a diagram showing a spectrum of a signal of each part in the embodiment.
【図3】 この発明の第2実施例によるスペクトラム拡
散無線通信方式を説明するブロック図である。FIG. 3 is a block diagram illustrating a spread spectrum wireless communication system according to a second embodiment of the present invention.
【図4】 同実施例において行う信号分割処理を説明す
る図である。FIG. 4 is a diagram illustrating a signal division process performed in the example.
【図5】 同実施例における信号分割回路の構成例を示
す図である。FIG. 5 is a diagram showing a configuration example of a signal division circuit in the embodiment.
【図6】 同実施例における各部の信号のスペクトラム
を示す図である。FIG. 6 is a diagram showing a spectrum of a signal of each unit in the embodiment.
【図7】 この発明の第3実施例によるスペクトラム拡
散無線通信方式を説明するブロック図である。FIG. 7 is a block diagram illustrating a spread spectrum wireless communication system according to a third embodiment of the present invention.
【図8】 同実施例における各部の信号のスペクトラム
を示す図である。FIG. 8 is a diagram showing a spectrum of a signal of each part in the embodiment.
【図9】 従来技術のスペクトラム拡散無線通信方式を
説明する図である。FIG. 9 is a diagram illustrating a spread spectrum wireless communication system of a conventional technique.
【図10】 従来技術のスペクトラム拡散無線通信方式
において各部の信号のスペクトラムを表わす図である。FIG. 10 is a diagram showing a spectrum of a signal of each unit in a spread spectrum wireless communication system of a conventional technique.
1−1……情報信号、1−2……直/並列変換回路、1
−3−1〜1−3−n……スペクトラム拡散回路、1−
4−1〜1−4−n……送信電力制御回路、1−5……
合成回路、1−6……送信機、1−7……送信アンテ
ナ、1−8……受信アンテナ、1−9……受信機、1−
10−1〜1−10−n……逆拡散回路、1−11−1
〜1−11−n……復調回路、1−12……並/直列変
換回路、1−13……復調信号。1-1 ... Information signal, 1-2 ... Serial / parallel conversion circuit, 1
-3-1 to 1-3-n ... Spread spectrum circuit, 1-
4-1 to 1-4-n ... Transmission power control circuit, 1-5 ...
Synthesis circuit, 1-6 ... Transmitter, 1-7 ... Transmitting antenna, 1-8 ... Receiving antenna, 1-9 ... Receiver, 1-
10-1 to 1-10-n ... Despreading circuit, 1-11-1
~ 1-11-n ... Demodulation circuit, 1-12 ... Parallel / serial conversion circuit, 1-13 ... Demodulation signal.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭57−129041(JP,A) 特開 昭63−283246(JP,A) 特開 平5−102943(JP,A) 特開 平5−153086(JP,A) (58)調査した分野(Int.Cl.7,DB名) H04J 13/00 - 13/06 H04B 1/69 - 1/713 H04B 7/26 102 H04Q 7/38 ─────────────────────────────────────────────────── --Continued from the front page (56) Reference JP-A-57-129041 (JP, A) JP-A-63-283246 (JP, A) JP-A-5-102943 (JP, A) JP-A-5- 153086 (JP, A) (58) Fields investigated (Int.Cl. 7 , DB name) H04J 13/00-13/06 H04B 1/69-1/713 H04B 7/26 102 H04Q 7/38
Claims (4)
上の整数)であるn個の所要品質に応じて異なる情報信
号に対し、 V1・K1=V2・K2=……=Vn・Kn なる条件を満足する拡散率K1,K2,…,Kn(≠1)
を各々有する各拡散符号を各々乗じることによりスペク
トラム拡散のなされたn個の信号(SS1〜SSn)を各
々生成し、 これらのスペクトラム拡散のなされた各信号(SS1〜
SSn)の電力を、前記所要品質が高い信号は高い送信
電力を有し前記所要品質が低い信号は低い送信電力を有
するように調整し、 この電力の調整された各信号(SA1〜SAn)を合成
し、同一周波数帯の無線信号として送信することを特徴
とするスペクトラム拡散無線通信用無線送信局。1. V 1 K 1 = V 2 for different information signals having different transmission qualities V 1 , V 2 , ..., V n (n is an integer of 2 or more) depending on required quality.・ K 2 = ... = V n · K n Diffusivities K 1 , K 2 , ..., K n (≠ 1) satisfying the condition
By multiplying each of the spread codes respectively having the following, each of the n spread spectrum signals (SS 1 to SS n ) is generated, and each of the spread spectrum signals (SS 1 to SS n ).
SS n ) power is adjusted such that the high quality required signal has a high transmit power and the low quality required signal has a low transmit power, and the power adjusted signals (SA 1 -SA) are adjusted. A radio transmitting station for spread spectrum radio communication, characterized by synthesizing n ) and transmitting as a radio signal in the same frequency band.
上の整数)であるn個の所要品質に応じて異なる情報信
号に対し、 V1・K1=V2・K2=……=Vn・Kn なる条件を満足する拡散率K1,K2,…,Kn(≠1)
を各々有する各拡散符号を各々乗じることによりスペク
トラム拡散のなされたn個の信号(SS1〜SSn)を各
々生成し、 これらのスペクトラム拡散のなされた各信号(SS1〜
SSn)の電力を、前記所要品質が高い信号は高い送信
電力を有し前記所要品質が低い信号は低い送信電力を有
するように調整し、 この電力の調整された各信号(SA1〜SAn)を合成
し、同一周波数帯の無線信号として無線送信局から送信
される無線信号を受信し、 受信した前記無線信号に対し、前記複数の拡散符号を用
いたスペクトラム逆拡散を各々施して前記n個の情報信
号を復調することを特徴とするスペクトラム拡散無線通
信用無線受信局。2. V 1 · K 1 = V 2 with respect to n information signals having different transmission qualities V 1 , V 2 , ..., V n (n is an integer of 2 or more) depending on required quality.・ K 2 = ... = V n · K n Diffusivities K 1 , K 2 , ..., K n (≠ 1) satisfying the condition
By multiplying each of the spread codes respectively having the following, each of the n spread spectrum signals (SS 1 to SS n ) is generated, and each of the spread spectrum signals (SS 1 to SS n ).
SS n ) power is adjusted such that the high quality required signal has a high transmit power and the low quality required signal has a low transmit power, and the power adjusted signals (SA 1 -SA) are adjusted. n ) are combined, a radio signal transmitted from a radio transmission station as a radio signal in the same frequency band is received, and the received radio signal is subjected to spectrum despreading using the plurality of spread codes, respectively, and A radio receiving station for spread spectrum radio communication, which demodulates n information signals.
V2,…,Vnであるn個(nは2以上の整数)の所要品
質に応じて異なる情報信号に分割し、 この分割された各情報信号に対し、相互に異なったn種
類の拡散符号であって、 V1・K1=V2・K2=……=Vn・Kn なる条件を満足する拡散率K1,K2,…,Kn(≠1)
を各々有する各拡散符号を各々乗じることによりスペク
トラム拡散のなされたn個の信号(SS1〜SSn)を各
々生成し、 これらのスペクトラム拡散のなされた各信号(SS1〜
SSn)の電力を、前記所要品質が高い信号は高い送信
電力を有し前記所要品質が低い信号は低い送信電力を有
するように調整し、 この電力の調整された各信号(SA1〜SAn)を合成
し、同一周波数帯の無線信号として送信することを特徴
とするスペクトラム拡散無線通信用無線送信局。3. An information signal to be transmitted has a transmission speed of V 1 ,
V 2, ..., n number is V n (n is an integer of 2 or more) is divided into different information signals in accordance with the required quality of, with respect to the divided respective information signals, the diffusion of the n kinds of mutually different The code is a spreading factor K 1 , K 2 , ..., K n (≠ 1) that satisfies the following condition: V 1 · K 1 = V 2 · K 2 = ... = V n · K n
By multiplying each of the spread codes respectively having the following, each of the n spread spectrum signals (SS 1 to SS n ) is generated, and each of the spread spectrum signals (SS 1 to SS n ).
SS n ) power is adjusted such that the high quality required signal has a high transmit power and the low quality required signal has a low transmit power, and the power adjusted signals (SA 1 -SA) are adjusted. A radio transmitting station for spread spectrum radio communication, characterized by synthesizing n ) and transmitting as a radio signal in the same frequency band.
V2,…,Vnであるn個(nは2以上の整数)の所要品
質に応じて異なる情報信号に分割し、 この分割された各情報信号に対し、相互に異なったn種
類の拡散符号であって、 V1・K1=V2・K2=……=Vn・Kn なる条件を満足する拡散率K1,K2,…,Kn(≠1)
を各々有する各拡散符号を各々乗じることによりスペク
トラム拡散のなされたn個の信号(SS1〜SSn)を各
々生成し、 これらのスペクトラム拡散のなされた各信号(SS1〜
SSn)の電力を、前記所要品質が高い信号は高い送信
電力を有し前記所要品質が低い信号は低い送信電力を有
するように調整し、 この電力の調整された各信号(SA1〜SAn)を合成
し、同一周波数帯の無線信号として無線送信局から送信
される無線信号を受信し、 受信した前記無線信号に対し、前記複数の各拡散符号を
用いたスペクトラム逆拡散を各々施し、 これらのスペクトラム逆拡散の結果得られる各信号を復
調し、 この復調により得られた各信号を、前記無線送信局にお
いて前記情報信号を分割した手順と逆の手順に従って合
成することを特徴とするスペクトラム拡散無線通信用無
線受信局。4. An information signal to be transmitted has a transmission rate of V 1 ,
V 2, ..., n number is V n (n is an integer of 2 or more) is divided into different information signals in accordance with the required quality of, with respect to the divided respective information signals, the diffusion of the n kinds of mutually different The code is a spreading factor K 1 , K 2 , ..., K n (≠ 1) that satisfies the following condition: V 1 · K 1 = V 2 · K 2 = ... = V n · K n
By multiplying each of the spread codes respectively having the following, each of the n spread spectrum signals (SS 1 to SS n ) is generated, and each of the spread spectrum signals (SS 1 to SS n ).
SS n ) power is adjusted such that the high quality required signal has a high transmit power and the low quality required signal has a low transmit power, and the power adjusted signals (SA 1 -SA) are adjusted. n ) are combined to receive a radio signal transmitted from a radio transmission station as a radio signal of the same frequency band, and the received radio signal is subjected to spectrum despreading using each of the plurality of spreading codes, A spectrum characterized by demodulating each signal obtained as a result of these spectrum despreading and synthesizing each signal obtained by this demodulation according to a procedure reverse to the procedure of dividing the information signal at the radio transmitting station. Radio receiving station for spread radio communication.
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JP03537594A Division JP3243109B2 (en) | 1994-02-08 | 1994-02-08 | Spread spectrum wireless communication system |
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JP3479778B2 true JP3479778B2 (en) | 2003-12-15 |
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