一种用于深空通信的级联编码调制方案及其迭代接收

2011 6th International ICST Conference on Communications and Networking in China (CHINACOM) Pub Date : 2011-08-17 DOI:10.1109/ChinaCom.2011.6158314

Gengxin Zhang, Dongming Bian, Jing Hu, Zhidong Xie, Qian Sun

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引用次数: 4

摘要

由于航天器与地面站之间的传播距离较长，对于深空通信系统来说，高功率效率比其他通信系统更为重要。本文提出了一种基于AR4JA码和FQPSK (Feher’s QPSK)的新型编码调制方案，可以缓解空间通信中存在的巨大损耗问题。该方法利用AR4JA码在极低信噪比下通信的特性和FQPSK的恒定包络特性，克服了大功率放大器的非线性影响。在接收端，通过迭代解调和解码可以获得较大的增益。提出了编码调制的系统模型，并提出了迭代接收算法。最后，通过计算机仿真验证了新方案的误码率性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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A concatenated coded modulation scheme and its iterative receiving for deep space communications

Due to the long propagation distance between spacecraft and Earth station the high power efficiency is more important for deep space communication than others communication systems. One novel coded modulation scheme based on AR4JA code and FQPSK (Feher's QPSK) is proposed out in this paper, which can alleviate the challenge of huge loss in space communications. The novel approach utilizes the property that AR4JA code enables communication at very low signal noise rate and constant envelope property of FQPSK to overcome the nonlinear impact of high power amplifier. At receiver, large gain can be attained by iterative demodulation and decoding. The paper presents the system model of coded modulation and proposes out iterative receive algorithm. Finally, the bit error rate performance of new scheme is confirmed by computer simulation.

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来源期刊

2011 6th International ICST Conference on Communications and Networking in China (CHINACOM)

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