| QC-LDPC码在OFDM-IDMA系统中的性能研究 |
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| 引用本文： | 余格非,栗铁桩,张晓克. QC-LDPC码在OFDM-IDMA系统中的性能研究[J]. 重庆邮电大学学报(自然科学版), 2011, 23(6): 685-690 |
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| 作者姓名： | 余格非 栗铁桩 张晓克 |
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| 作者单位： | 重庆通信学院，重庆 400035 |
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| 基金项目： | 重庆市自然科学基金（CSTC，2007BB2387） |
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| 摘 要： | 为了寻求一个从多址接入技术、调制技术到纠错编码方案等方面,满足下一代无线移动通信高速率、高可靠性需求的整系统解决方案,设计了一种新的基于准循环的LDPC(quasi cyclic low density parity check codes,QC-LDPC)编码的OFDM-IDMA(orthogonal frequen...
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| 关 键 词： | 通信技术 准循环LDPC码 正交频分复用 交织多址接入 多用户检测 |
| 收稿时间： | 2011-01-28 |
Performance research of OFDM-IDMA systems based on QC-LDPC |
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| YU Ge-fei,LI Tie-zhuang,ZHANG Xiao-ke. Performance research of OFDM-IDMA systems based on QC-LDPC[J]. Journal of Chongqing University of Posts and Telecommunications, 2011, 23(6): 685-690 |
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| Authors: | YU Ge-fei LI Tie-zhuang ZHANG Xiao-ke |
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| Abstract: | 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. |
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| Keywords: | communication technology quasi cyclic low density parity check codes(QC-LDPC) orthogonal frequency division multiplexing(OFDM) interleave division multiple access(IDMA) multi-user detection |
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