Low-complexity portion parallel transmission method for multi-carrier direct spread spectrum CDMA system |
Title： |
| Low-complexity portion parallel transmission method for multi-carrier direct spread spectrum CDMA system |
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Application Number： |
200310100207 |
Application Date： |
2003/10/10 |
Announcement Date： |
2004/09/15 |
Pub. Date： |
2006/11/01 |
Publication Number： |
1529433 |
Announcement Number： |
1283054 |
Grant Date： |
2006-11-1 |
Granted Pub. Date： |
2006-11-1 |
ApplicationType： |
Invention |
State/Country： |
11[China|beijing] |
IPC： |
H04J 11/00H04J 13/02H04B 1/69H04L 27/18H04L 12/26H04Q 7/20H04Q 7/34 |
Applicant(s)： |
Tsinghua Univ. |
Inventor(s)： |
Wang Mingshu, Lu Jianhua, Zhou Zucheng |
Key Words： |
Low-complexity, parallel transmission, multi-carrier, CDMA |
Abstract： |
The invented method relates to multicarrier CDMA technique area combining orthogonal FDM technique with CDMA system. Characters are that based on output from user's matched filter, computer divides users three classes: reliable, ordinary and invalid on each subcarrier. Treatment for eliminating partial interferes is carried out for reliable and ordinary classes, and no treatment is carried out for invalid class. Thus, send bit br to the power n and bo to the power n in reliable and ordinary classes are obtained based on treating decision for eliminating partial parallel interfere on n pieces of subcarriers, and invalid class ban=0. Maximum ratio mergers in M group are carried out for K users according to group affiliated with from result of Nc groups of {br to the power n , bo to the power n, ba to the power n}. Then, decision result of M pieces of parallel bits for K users is output. Final outputs of K users are obtained through series/parallel conversion. |
Claim： |
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Priority： |
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PCT： |
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LegalStatus： |
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