| 基于LDPC码的WCDMA下行链路性能仿真 |
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| 引用本文： | 徐位凯,王琳.基于LDPC码的WCDMA下行链路性能仿真[J].系统仿真学报,2007,19(8):1833-1835,1862. |
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| 作者姓名： | 徐位凯 王琳 |
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| 作者单位： | 厦门大学通信工程系,厦门,361005 |
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| 基金项目： | 教育部跨世纪优秀人才培养计划;福建省科技厅科研项目 |
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| 摘 要： | LDPC码是一类靠近Shannon限的高效信道编码，在AWGN信道下具有非常优越的性能。在讨论了LDPC码的基本原理之后，构建了基于LDPC码的WCDMA下行链路，改进了LDPC码的译码过程。仿真结果表明，在高速传输速率下（384kbit／s），不规则LDPC码具有优于Turbo码的性能，这对于LDPC码应用到复杂无线通信系统中具有重要意义。
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| 关 键 词： | LDPC码 Turbo码 信度传播 WCDMA下行链路 |
| 文章编号： | 1004-731X（2007）08-1833-03 |
| 收稿时间： | 2006-02-30 |
| 修稿时间： | 2006-02-302006-12-29 |
Simulation of LDPC Codes over WCDMA Downlink Channels |
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| XU Wei-kai,WANG Lin.Simulation of LDPC Codes over WCDMA Downlink Channels[J].Journal of System Simulation,2007,19(8):1833-1835,1862. |
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| Authors: | XU Wei-kai WANG Lin |
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| Institution: | Department of Communication Engineering, Xiamen University, Xiamen, 361005, China |
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| Abstract: | LDPC codes, which have good performances over AWGN channel, are the efficiently channel coding of near Shannon limits. After describing elements of LDPC codes, LDPC coded WCDMA downlinks were constructed, meanwhile, decoding process was improved. In high rate condition (384kbit/s), simulating results show that performances of irregular-LDPC codes are than that of Turbo codes. It is important value for LDPC coding in complex wireless communication systems. |
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| Keywords: | LDPC codes Turbo codes belief propagation WCDMA downlinks |
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