| 空间双向中继多元调制编码系统及设计方法 |
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| 引用本文： | 杨 雷,靳 松,蔡博阳,安建平.空间双向中继多元调制编码系统及设计方法[J].通信学报,2014,35(10):2-16. |
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| 作者姓名： | 杨 雷 靳 松 蔡博阳 安建平 |
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| 作者单位： | 北京理工大学 信息与电子学院，北京 100081 |
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| 基金项目： | 国家高技术研究发展计划（“863”计划）基金资助项目（2012AA121604） |
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| 摘 要： | 针对空间网络信息交换速率和容量要求越来越高的问题，提出了采用多元调制编码的物理层网络编码有效提高双向中继无线网络信息交换速率的方案。该方案中2个用户使用完全相同的多元非规则重复累积（IRA）调制编码，从而使中继节点可以直接从叠加信号中恢复网络编码信息。通过EXIT分析方法，得到了双向中继信道下度分布优化的多元IRA调制编码。仿真结果表明，所提方案相对传统时分多路方案而言可以将信息交换时间缩短约48%。
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| 关 键 词： | 双向中继信道 多元调制编码 物理层网络编码 空间网络 |
Non-binary modulation-coded scheme for the
space two-way relay channels |
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| Lei YANG,Song JIN,Bo-yang CAI,Jian-ping AN.Non-binary modulation-coded scheme for the
space two-way relay channels[J].Journal on Communications,2014,35(10):2-16. |
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| Authors: | Lei YANG Song JIN Bo-yang CAI Jian-ping AN |
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| Affiliation: | School of Information and Electronics,Beijing Institute of Technology,Beijing 100081,China |
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| Abstract: | A non-binary irregular repeat-accumulate (IRA) modulation-coded physical-layer network coding (PNC) scheme was proposed for the space two-way relay channels (TWRC) to improve the information exchange rates of space information networks. In the scheme, a same non-binary IRA modulation code was employed at two users. This configuration enabled the recovery of the network coded information sequence from the superimposed signal directly by the relay. The optimized non-binary IRA modulation code was obtained by using extrinsic information transfer (EXIT) chart analysis. Numerical results demonstrate that the proposed scheme can reduce the duration of information exchange by about 48% compared to the conventional time divided multiple access scheme. |
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| Keywords: | TWRC non-binary modulation code PNC space network |
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