在MIMO-OFDM系统中,基于软判决的检测算法其性能要明显优于基于硬判决的检测算法.传统的基于软判决的检测算法由于其很高的复杂度,从而对实现提出了很大的挑战.鉴于此,通过对软输出球形译码检测算法的研究,引入了一种快速有效的单树搜索球形译码检测算法.该算法极大地降低了MIMO软检测的复杂度,已应用于TD-LTE无线综合测试仪表的开发中.%In MIMO-OFDM system, the performance of soft - decision detection algorithms is significantly better than hard-decision detection algorithm. Because the traditional detection algorithm based on soft - decision has high complexity, it results in a great challenge for the realization. Thus , through researching the soft-output sphere decoding detection algorithm, this paper introduces a fast and effective single tree research sphere decoding detection algorithm. This algorithm greatly reduces the complexity of MIMO soft detection, and has been applied to the TD-LTE wireless integrated test instrument.
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