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时空联合的短波分数间隔迭代均衡合并算法

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摘要 针对快速时变衰落低信噪比短波信号的接收问题,本文提出了时空联合的分数间隔迭代均衡合并算法。该算法基于最小均方误差准则,在线性均衡器中同时完成信道均衡、分集合并以及定时误差的补偿。通过均衡器与译码器之间迭代交换软信息,从而不断更新均衡器的系数,提升接收机性能。为了降低均衡的复杂度,提出无性能损失的低复杂度算法。性能分析和误码仿真验证表明,相比时空联合的符号间隔算法,所提算法在定时误差时提升性能约3dB,有效补偿定时误差;相比时空分级的分数间隔算法,所提算法在低信噪比区间(0~2dB)提升性能约0.15dB。
机构地区 不详
出处 《电信技术研究》 2018年第4期30-37,共8页 Research on telecommunication technology
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