%0 Journal Article
%T Performance research of OFDM-IDMA systems based on QC-LDPC<br>QC-LDPC码在OFDM-IDMA系统中的性能研究
%A 余格非
%A 栗铁桩
%A 张晓克
%J 重庆邮电大学学报(自然科学版)
%D 2011
%I 
%X To meet the need of high rate and high reliability for next generation wireless mobile communication system, a new communications scheme is considered from multiple access, and the modulation to error-correcting codes which is based on the QC-LDPC coded OFDM-IDMA system is designed. The performance under different coding rate and different length of frame is analyzed, and the comparison on the proposed QC-LDPC coded OFDM-IDMA system and the system based on convolutional codes over AWGN channel has been made. The simulation result indicates that this new system can get greater coding gain and provide higher quality of communications service, so it is very suitable for high-speed data transmission and also has very far-reaching significance for the future of digital communication systems.
%K communication technology
%K quasi cyclic low density parity check codes(QC-LDPC)
%K orthogonal frequency division multiplexing(OFDM)
%K interleave division multiple access(IDMA)
%K multi-user detection<br>通信技术
%K 准循环LDPC码
%K 正交频分复用
%K 交织多址接入
%K 多用户检测
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=01BA20E8BA813E1908F3698710BBFEFEE816345F465FEBA5&cid=96E6E851B5104576C2DD9FC1FBCB69EF&jid=5C2694A2E5629ECD6B59D7B28C6937AD&aid=C3C889FD0D3CC16FC353B7DF11820993&yid=9377ED8094509821&vid=EA389574707BDED3&iid=B31275AF3241DB2D&sid=AF14A8B15FB15A64&eid=DC2727B6AC017B3F&journal_id=1673-825X&journal_name=重庆邮电大学学报(自然科学版)&referenced_num=0&reference_num=0