CN107370528A - Multi-user installation cut-in method and device - Google Patents
Multi-user installation cut-in method and device Download PDFInfo
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- CN107370528A CN107370528A CN201610308540.5A CN201610308540A CN107370528A CN 107370528 A CN107370528 A CN 107370528A CN 201610308540 A CN201610308540 A CN 201610308540A CN 107370528 A CN107370528 A CN 107370528A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
- H04B7/0452—Multi-user MIMO systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/707—Spread spectrum techniques using direct sequence modulation
- H04B1/7073—Synchronisation aspects
- H04B1/7087—Carrier synchronisation aspects
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0404—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas the mobile station comprising multiple antennas, e.g. to provide uplink diversity
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Abstract
The invention discloses a kind of multi-user installation cut-in method and device, methods described to include：Different spread processing operations is carried out respectively to the data of each user equipment, makes the data of each user equipment after spread processing separate；The data of multiple user equipmenies after spread processing are carried out simultaneously with frequency uplink.The embodiment of the present invention carries out different spread processing operations by the data to each user equipment respectively, make the data of each user equipment after spread processing separate, and the data of multiple user equipmenies after spread processing are carried out simultaneously with frequency uplink, enable multiple user equipmenies simultaneously defeated with keeping pouring in, improve signal transmission rate and resource utilization.
Description
Technical field
The present embodiments relate to communication technical field, more particularly to a kind of multi-user installation cut-in method and device.
Background technology
An importance is exactly the selection of uplink multi-address technology in new generation of wireless communication, and current multiple access technology is most
It is orthogonal access mode, such as frequency division multiple access (Frequency Division Multiple Access, FDMA), time-division
Multiple access (Time Division Multiple Access, TDMA), CDMA (Code Division Multiple
Access, CDMA) and OFDM (Orthogonal Frequency Division Multiple Access,
OFDMA).Different user devices are distinguished by orthogonal frequency, time slot, code word and running time-frequency resource respectively, to realize difference
Orthogonal transmission between user equipment.
In addition, new generation of wireless communication proposes higher requirement to uplink transmission rate and power system capacity, and from information
The angle analysis of opinion, orthogonal access mode due to multi-user installation can not shared channel resources, thus be a kind of suboptimum
Transmission means.Nonopiate access technology then due to relaxing the requirement to orthogonality, makes multiple user equipmenies can be with shared channel
Capacity, therefore power system capacity can be obviously improved.And because the running time-frequency resource of different user devices need not keep orthogonality, because
This can reduce the signaling consumption in data transmission procedure.
Interleave Division Multiple Access technology (Interleaving Division Multiple Access, IDMA) is existing
Nonopiate access technology, it distinguishes different user devices using different intertexture patterns, proposes that being used for CDMA accesses earliest
In system, the channel coding of low bit- rate is coordinated to be used to distinguish different user devices.And directly IDMA technologies are led to for multicarrier
When in letter system, in order to ensure that the channel coding, it is necessary to using low bit- rate can be successfully decoded in different user devices, it is clear that can drop
Low signal transmission rate, limit application of the technology in new generation of wireless communication system.
The content of the invention
The present invention provides a kind of multi-user installation cut-in method and device, to improve signal transmission rate.
In a first aspect, the embodiments of the invention provide a kind of multi-user installation cut-in method, including：
Different spread processing operations is carried out respectively to the data of each user equipment, made each after spread processing
The data of user equipment are separate；
The data of multiple user equipmenies after spread processing are carried out simultaneously with frequency uplink.
Second aspect, the embodiment of the present invention additionally provide a kind of multi-user installation access device, including：
Spread processing module, carry out different spread processing operations respectively for the data to each user equipment, make through
The data for each user equipment crossed after spread processing are separate；
Uplink module, for carrying out simultaneously the data of multiple user equipmenies after spread processing with the up biography of frequency
It is defeated.
The embodiment of the present invention carries out different spread processing operations by the data to each user equipment respectively, make by
The data of each user equipment after spread processing are separate, and the data of multiple user equipmenies after spread processing are carried out
Simultaneously with frequency uplink, enable multiple user equipmenies simultaneously defeated with keeping pouring in, improve signal transmission rate and resource utilization.
Brief description of the drawings
Fig. 1 is a kind of flow chart of multi-user installation cut-in method in the embodiment of the present invention one；
Fig. 2 is a kind of flow chart of multi-user installation cut-in method in the embodiment of the present invention two；
Fig. 3 is a kind of flow chart of multi-user installation cut-in method in the embodiment of the present invention three；
Fig. 4 is a kind of flow chart of multi-user installation cut-in method in the embodiment of the present invention four；
Fig. 5 A are a kind of flow charts of multi-user installation cut-in method in the embodiment of the present invention five；
Fig. 5 B are the flows based on OFDM transmission in a kind of multi-user installation cut-in method in the embodiment of the present invention five
Schematic diagram；
Fig. 6 A are a kind of flow charts of multi-user installation cut-in method in the embodiment of the present invention six；
Fig. 6 B are to be transmitted in a kind of multi-user installation cut-in method in the embodiment of the present invention six based on DFT-S-OFDM
Schematic flow sheet；
Fig. 7 A are a kind of flow charts of multi-user installation cut-in method in the embodiment of the present invention seven；
Fig. 7 B are that OFDM multi-antenna transmissions pair are based in a kind of multi-user installation cut-in method in the embodiment of the present invention seven
The schematic diagram answered；
Fig. 8 is a kind of structure chart of multi-user installation access device in the embodiment of the present invention eight.
Embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention, rather than limitation of the invention.It also should be noted that in order to just
Part related to the present invention rather than entire infrastructure are illustrate only in description, accompanying drawing.
Embodiment one
Fig. 1 is a kind of flow chart for multi-user installation cut-in method that the embodiment of the present invention one provides, and the present embodiment can fit
The situation of upstream data communication is carried out for multi-user installation, this method can be by multi-user installation provided in an embodiment of the present invention
Access device performs, and the device can be realized by the way of software or hardware, as shown in figure 1, specifically including：
S101, the data to each user equipment carry out different spread processing operations respectively, make after spread processing
Each user equipment data it is separate.
Specifically, before the data of each user equipment are carried out with different spread processing operations respectively, first to every
The data of individual user equipment carry out at least one of following pretreatment respectively：Channel coding processing, scrambling processing and modulation treatment, so
Different spread processing operations is carried out respectively to the data of pretreated each user equipment afterwards.
S102, the data to multiple user equipmenies after spread processing are carried out simultaneously with frequency uplink.
Specifically, when the data of multiple user equipmenies after to spread processing are carried out simultaneously with frequency uplink, first
At least one of following processing is carried out to the data of multiple user equipmenies after spread processing：DFT processing, IFFT processing, layer mapping
Processing, precoding processing, resource impact processing and insertion circulation prefix processing；Then to the number of multiple user equipmenies after processing
According to progress simultaneously with frequency uplink.
The present embodiment carries out different spread processing operations by the data to each user equipment respectively, makes by spread spectrum
The data of each user equipment after processing are separate, and the data of multiple user equipmenies after spread processing are carried out simultaneously
With frequency uplink, enable multiple user equipmenies simultaneously defeated with keeping pouring in, improve signal transmission rate and resource utilization.
On the basis of above-described embodiment, the data of different user devices are made a distinction by different frequency expansion sequences, are
Reduce the loss of spectrum efficiency, the following two kinds spread spectrum mode can be used：
First way, the data of each user equipment are expanded respectively using the different frequency expansion sequences of preset length
Frequency is handled.
Wherein, the frequency expansion sequence can be but be not limited to pseudo-random sequence or orthogonal sequence.
The second way, the data of each user equipment are subjected to process of convolution from different frequency expansion sequences respectively.
Wherein, the frequency expansion sequence can be but be not limited to multiple Gauss sequence.
On the basis of above-described embodiment, further to improve power system capacity, the signaling reduced in data transmission procedure is opened
Pin, efficiency of transmission and resource utilization are improved, the data that can be directed to different user devices are operated and not using different spread processings
Same intertexture pattern makes a distinction.Specifically include：
Spread processing is carried out respectively to the data of each user equipment；
Processing is interleaved using interweaving machine to the data of each user equipment after spread processing, made by interleaving treatment
The data of each user equipment afterwards are separate.
In order to ensure the independence and randomness between the data of different user devices, the present embodiment, which preferably uses, to interweave deeply
The deeper S- random interleavers of degree, and ensure the Dynamic data exchange generation of different user devices intertexture pattern used.
Specifically, when user equipment is more, due to the data of each user equipment are carried out with the spread spectrum sequence of spread processing
The number of row is limited, and certain customers' equipment may use identical frequency expansion sequence to carry out spread processing, and phase is used for these
The data that same frequency expansion sequence carries out the user equipment of spread processing can use different interleaving treatments to operate to make a distinction, right
Carrying out the data of the user equipment of spread processing using different frequency expansion sequences in those can use different interleaving treatments to operate,
Identical interleaving treatment can also be used to operate.
Above-described embodiment carries out different spread processing operations by the data to each user equipment respectively, or carries out not
Same spread processing operation and interleaving treatment, make the data of each user equipment after above-mentioned processing separate and right
The data of multiple user equipmenies after processing carry out enabling multiple user equipmenies are simultaneously same to keep pouring in frequency uplink simultaneously
It is defeated, improve signal transmission rate and resource utilization.
Embodiment two
Fig. 2 is a kind of flow chart for multi-user installation cut-in method that the embodiment of the present invention two provides, and the present embodiment is upper
On the basis of stating embodiment, the data of each user equipment will respectively be carried out with different spread processings and operated, be optimized for using
The different frequency expansion sequences of preset length carry out replication processes to the data of each user equipment respectively, as shown in Fig. 2 specific bag
Include：
S201, using the different frequency expansion sequences of preset length the data of each user equipment are handled respectively, passed through
The data for each user equipment crossed after handling are separate.
Wherein, the frequency expansion sequence is pseudo-random sequence or orthogonal sequence.
For example, Hadamard sequence of the shorter spreading code set of length as frequency expansion sequence, such as 4 ranks can be pre-defined
Arrange { c1, c2, c3, c4, wherein c1=(1,1,1,1), c2=(1, -1,1, -1), c3=(1,1, -1, -1), c4=(1, -1, -1,
1).For the data of each user equipment, one of code word can be randomly choosed and spread for data, it might even be possible to for difference
Data symbol select different code word.Assuming that the data of k-th of user equipment are sk, use c1=(1,1,1,1) are spread.
Data symbol after then spreading expands toWhereinRepresent Kronecker product.It can be seen that to single
For user equipment, data rate is reduced to 1/4.But because the data of multiple user equipmenies can pass through identical running time-frequency resource
It is transmitted simultaneously, therefore power system capacity can be increased.
S202, the data to multiple user equipmenies after spread processing are carried out simultaneously with frequency uplink.
The present embodiment carries out different duplication operations by using frequency expansion sequence respectively to the data of each user equipment, makes
The data of each user equipment after above-mentioned processing are separate, and the data of multiple user equipmenies after processing are carried out
Simultaneously with frequency uplink, enable multiple user equipmenies simultaneously defeated with keeping pouring in, by increasing capacitance it is possible to increase power system capacity.
Embodiment three
Fig. 3 is a kind of flow chart for multi-user installation cut-in method that the embodiment of the present invention three provides, and the present embodiment is upper
On the basis of stating embodiment, the data of each user equipment will respectively be carried out with different spread processings and operated, being optimized for will be every
The data of individual user equipment carry out process of convolution from different frequency expansion sequences respectively, as shown in figure 3, specifically including：
S301, the data of each user equipment are subjected to process of convolution from different frequency expansion sequence respectively, made by convolution
The data of each user equipment after processing are separate.
Wherein, the frequency expansion sequence can be multiple Gauss sequence.Specifically, for the data of each user equipment, it is independent
The multiple Gauss sequence that random one length of generation is L, pre-set criteria construction or the preferable sequence of search performance can also be passed through.
Assuming that the data of k-th of user equipment are sk, with c=(c1,c2,…,cL) carry out convolution, i.e. c*sk.Above-described embodiment two is contrasted,
When the sequence of the data of user equipment is longer, data rate is hardly lost, equally can also increase power system capacity.In addition
Because the present embodiment has carried out the process of convolution of complex field to the data of user equipment, thus can also provide extra coding and
Diversity gain.
S302, the data to multiple user equipmenies after process of convolution are carried out simultaneously with frequency uplink.
The present embodiment carries out different convolution operations respectively by using the data of each user equipment of multiple Gauss sequence pair,
Make the data of each user equipment after above-mentioned process of convolution separate, and to the number of multiple user equipmenies after processing
According to progress simultaneously with frequency uplink, enable multiple user equipmenies simultaneously defeated with keeping pouring in, power system capacity can not only be increased, carried
High-transmission efficiency and resource utilization, and extra coding and diversity gain can be provided.
Example IV
Fig. 4 be the embodiment of the present invention four provide a kind of multi-user installation cut-in method flow chart, the present embodiment with it is upper
On the basis of stating embodiment, the data of each user equipment will respectively be carried out with different spread processings and operated, made by spread spectrum
The data of each user equipment after processing differ, and are optimized for using spread processing by the way of interleaving treatment is combined pair
The data of each user equipment are handled, as shown in figure 4, specifically including：
S401, the data to each user equipment carry out spread processing respectively.
S402, the data to each user equipment after spread processing are interleaved processing using interweaving machine, make by handing over
The data for knitting each user equipment after processing are separate.
S403, the data to multiple user equipmenies after interleaving treatment are carried out simultaneously with frequency uplink.
In the present embodiment, in order to ensure the independence and randomness between the data of different user devices, it is proposed that use
The deeper S interleavers of interleave depth, and ensure the Dynamic data exchange generation of different user devices intertexture pattern used.Due to this reality
It is to expand sequence and random interleaver differentiation different user by code independent of each other to apply example, can also be referred to as code and expand interlacing multi-address
(Code Spread Interleaving Division Multiple Access, CS-IDMA).Relative to traditional orthogonal
The SC-FDMA technologies used in multiple access technique, such as LTE, need before transmitting the data to base station requests ascending resource,
Only receiving to come from can just be transmitted after the Grant message of base station.But for CS-IDMA, difference is used
Family equipment can share running time-frequency resource, therefore not need base station to distribute running time-frequency resource in advance, therefore need not receive base station
Grant message can be carried out data transfer, so as to save the signaling consumption of correlation and propagation delay time.
Embodiment five
Fig. 5 A are a kind of flow chart for multi-user installation cut-in method that the embodiment of the present invention five provides, and the present embodiment provides
A kind of multi-user installation access scheme under OFDM transmission, as shown in Figure 5 B, with reference to Fig. 5 A, specifically include：
S501, the data to each user equipment carry out channel coding processing, scrambling processing and modulation treatment successively respectively.
S502, the data to each user equipment after modulation carry out different spread processing and interleaving treatment respectively, make
The data of each user equipment after spread processing and interleaving treatment are separate.
S503, the data to multiple user equipmenies after spread processing and interleaving treatment carry out IFFT processing and insertion successively
Circulation prefix processing.
S504, the data to multiple user equipmenies after processing are carried out simultaneously with frequency uplink.
Embodiment six
Fig. 6 A are a kind of flow chart for multi-user installation cut-in method that the embodiment of the present invention six provides, and the present embodiment provides
A kind of multi-user installation access scheme under DFT-S-OFDM transmission, as shown in Figure 6B, with reference to Fig. 6 A, specifically include：
S601, the data to each user equipment carry out channel coding processing, scrambling processing and modulation treatment successively respectively.
S602, the data to each user equipment after modulation carry out different spread processing and interleaving treatment respectively, make
The data of each user equipment after spread processing and interleaving treatment are separate.
S603, the data to multiple user equipmenies after spread processing and interleaving treatment carry out DFT processing, at IFFT successively
Reason and insertion circulation prefix processing.
S604, the data to multiple user equipmenies after processing are carried out simultaneously with frequency uplink.
Embodiment seven
Fig. 7 A are a kind of flow chart for multi-user installation cut-in method that the embodiment of the present invention seven provides, and the present embodiment provides
A kind of multi-antenna multi-user equipment access scheme under OFDM transmission, as shown in Figure 7 B, with reference to Fig. 7 A, specifically include：
S701, the data to each user equipment carry out channel coding processing, scrambling processing and modulation treatment successively respectively.
S702, the data to each user equipment after modulation carry out different spread processing and interleaving treatment respectively, make
The data of each user equipment after spread processing and interleaving treatment are separate.
S703, the data to multiple user equipmenies after spread processing and interleaving treatment carry out layer mapping processing, pre- successively
Coded treatment, resource impact processing, IFFT processing and insertion circulation prefix processing.
S704, the data to multiple user equipmenies after processing are carried out simultaneously with frequency uplink.
In addition, the embodiment of the present invention is applied also in other multicarriers and single carrier transmitting system, such as can be used for
In the communication scenes such as F-OFDM, UFMC and FBMC.
Embodiment eight
Fig. 8 show a kind of structural representation of multi-user installation access device of the offer of the embodiment of the present invention eight, the dress
Putting can be realized by the way of software or hardware, as shown in figure 8, the concrete structure of the device is as follows：The He of spread processing module 81
Uplink module 82.
The spread processing module 81 is used to carry out the data of each user equipment respectively different spread processing operations,
Make the data of each user equipment after spread processing separate；
The uplink module 82 is used to carry out simultaneously with frequency the data of multiple user equipmenies after spread processing
Row transmission.
Multi-user installation access device described in the present embodiment is used to perform the multi-user installation described in the various embodiments described above
Cut-in method, its technical principle is similar with caused technique effect, repeats no more here.
On the basis of above-described embodiment, the spread processing module 81 is specifically used for the different expansions using preset length
Frequency sequence is handled the data of each user equipment respectively.
On the basis of above-described embodiment, the frequency expansion sequence is pseudo-random sequence or orthogonal sequence.
On the basis of above-described embodiment, the spread processing module 81 is specifically used for the data of each user equipment point
Process of convolution is not carried out from different frequency expansion sequences.
On the basis of above-described embodiment, the frequency expansion sequence is multiple Gauss sequence.
On the basis of above-described embodiment, the spread processing module 81 is specifically used for, to the data of each user equipment
Spread processing is carried out respectively；Processing is interleaved using interweaving machine to the data of each user equipment after spread processing, make through
The data for each user equipment crossed after interleaving treatment are separate.
On the basis of above-described embodiment, the interleaver is S- random interleavers.
On the basis of above-described embodiment, the spread processing module 81 is specifically used for：
At least one of following pretreatment is carried out respectively to the data of each user equipment：Channel coding processing, scrambling processing
And modulation treatment；
Different spread processing operations is carried out respectively to the data of pretreated each user equipment.
On the basis of above-described embodiment, the uplink module 82 is specifically used for：
At least one of following processing is carried out to the data of multiple user equipmenies after spread processing：At DFT processing, IFFT
Reason, layer mapping processing, precoding processing, resource impact processing and insertion circulation prefix processing；
The data of multiple user equipmenies after processing are carried out simultaneously with frequency uplink.
Multi-user installation access device described in the various embodiments described above is used to perform the multi-user described in the various embodiments described above
Equipment cut-in method, its technical principle is similar with caused technique effect, repeats no more here.
Pay attention to, above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that
The invention is not restricted to specific embodiment described here, can carry out for a person skilled in the art various obvious changes,
Readjust and substitute without departing from protection scope of the present invention.Therefore, although being carried out by above example to the present invention
It is described in further detail, but the present invention is not limited only to above example, without departing from the inventive concept, also
Other more equivalent embodiments can be included, and the scope of the present invention is determined by scope of the appended claims.
Claims (18)
- A kind of 1. multi-user installation cut-in method, it is characterised in that including：Different spread processing operations is carried out respectively to the data of each user equipment, makes each user after spread processing The data of equipment are separate；The data of multiple user equipmenies after spread processing are carried out simultaneously with frequency uplink.
- 2. according to the method for claim 1, it is characterised in that the data to each user equipment carry out difference respectively Spread processing operation, including：Spread processing is carried out to the data of each user equipment respectively using the different frequency expansion sequences of preset length.
- 3. according to the method for claim 2, it is characterised in that the frequency expansion sequence is pseudo-random sequence or orthogonal sequence.
- 4. according to the method for claim 1, it is characterised in that the data to each user equipment carry out difference respectively Spread processing operation, including：The data of each user equipment are subjected to process of convolution from different frequency expansion sequences respectively.
- 5. according to the method for claim 4, it is characterised in that the frequency expansion sequence is multiple Gauss sequence.
- 6. according to the method described in any one of Claims 1 to 5, it is characterised in that the data to each user equipment point Different spread processing operations is not carried out, makes the data of each user equipment after spread processing separate, including：Spread processing is carried out respectively to the data of each user equipment；Processing is interleaved using interweaving machine to the data of each user equipment after spread processing, made after interleaving treatment The data of each user equipment are separate.
- 7. according to the method for claim 6, it is characterised in that the interleaver is S- random interleavers.
- 8. according to the method described in any one of Claims 1 to 5, it is characterised in that the data to each user equipment point Different spread processing operations is not carried out, including：At least one of following pretreatment is carried out respectively to the data of each user equipment：Channel coding processing, scrambling processing and tune System processing；Different spread processing operations is carried out respectively to the data of pretreated each user equipment.
- 9. according to the method described in any one of Claims 1 to 5, it is characterised in that multiple users to after spread processing The data of equipment are carried out simultaneously with frequency uplink, including：At least one of following processing is carried out to the data of multiple user equipmenies after spread processing：DFT processing, IFFT processing, layer Mapping processing, precoding processing, resource impact processing and insertion circulation prefix processing；The data of multiple user equipmenies after processing are carried out simultaneously with frequency uplink.
- A kind of 10. multi-user installation access device, it is characterised in that including：Spread processing module, carry out different spread processing operations respectively for the data to each user equipment, make by expanding The data of each user equipment after frequency processing are separate；Uplink module, for carrying out simultaneously the data of multiple user equipmenies after spread processing with frequency uplink.
- 11. device according to claim 10, it is characterised in that the spread processing module is specifically used for：Spread processing is carried out to the data of each user equipment respectively using the different frequency expansion sequences of preset length.
- 12. device according to claim 11, it is characterised in that the frequency expansion sequence is pseudo-random sequence or orthogonal sequence Row.
- 13. device according to claim 10, it is characterised in that the spread processing module is specifically used for：The data of each user equipment are subjected to process of convolution from different frequency expansion sequences respectively.
- 14. device according to claim 13, it is characterised in that the frequency expansion sequence is multiple Gauss sequence.
- 15. according to the device described in any one of claim 10~14, it is characterised in that the spread processing module is specifically used In：Spread processing is carried out respectively to the data of each user equipment；Processing is interleaved using interweaving machine to the data of each user equipment after spread processing, made after interleaving treatment The data of each user equipment are separate.
- 16. device according to claim 15, it is characterised in that the interleaver is S- random interleavers.
- 17. according to the device described in any one of claim 10~14, it is characterised in that the spread processing module is specifically used In：At least one of following pretreatment is carried out respectively to the data of each user equipment：Channel coding processing, scrambling processing and tune System processing；Different spread processing operations is carried out respectively to the data of pretreated each user equipment.
- 18. according to the device described in any one of claim 10~14, it is characterised in that the uplink module is specifically used In：At least one of following processing is carried out to the data of multiple user equipmenies after spread processing：DFT processing, IFFT processing, layer Mapping processing, precoding processing, resource impact processing and insertion circulation prefix processing；The data of multiple user equipmenies after processing are carried out simultaneously with frequency uplink.
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| CN111869174A (en) * | 2018-03-15 | 2020-10-30 | 华为技术有限公司 | Data sending method and device |
| CN113824537A (en) * | 2021-11-25 | 2021-12-21 | 成都航天通信设备有限责任公司 | Modulation method and system based on general computer |
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| 孙思月: ""基于互补码的多用户无线传输技术及码设计方法"", 《中国博士学位论文全文数据库》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111869174A (en) * | 2018-03-15 | 2020-10-30 | 华为技术有限公司 | Data sending method and device |
| CN111869174B (en) * | 2018-03-15 | 2021-11-30 | 华为技术有限公司 | Data sending method and device |
| CN113824537A (en) * | 2021-11-25 | 2021-12-21 | 成都航天通信设备有限责任公司 | Modulation method and system based on general computer |
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