SM系统中改进的低复杂度检测算法

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中图分类号：TN911.7-34 文献标识码：A 文章编号：1004-373X（2025）17-0016-05

引用格式：，，，.SM系统中改进的低复杂度检测算法[J].现代电子技术，2025，48（17）：16-20.

Abstract：Inthespatial modulation （SM） technology，themaximumlikelihood（ML）algorithmoffers theoptimal demodulationperformancebyexhaustivelysearchingallposibletransmissioncombinations.However，itshighcomputational complexityrendersitimpracticalforlarge-scaleSMsystems.Toaddessthisproblem，aQC-MLdetectionalgorithmisproposed toreducecomputationalcomplexitywhilensuringdetectionperformane.FistlytheQC-MLalgorithmpreprocessstheceied signalandemploysacircular boundaryquantization method toreducethesearch spaceof modulationconstelltionsymbols associatedwitheachpotentialtransmitingantenna.Then，thesetofresultswiththesmalestMLvalueisselectedforoutput. Sincethemainideaofquantificationis tocomparemagnitudes，noaditionalcomputationalcomplexitywillbeintroducedinthis processSimulationresultsshowthatthedetectionperformanceoftheproposedQC-MLalgorithmcloselyapproximatesthatof the originalone，hileitscomputationalcomplexityiseducdsignificantly.Theeffectivenessofteproposedalgorithisverified.

Keywords：spatial modulation;signal detection;ML;computational complexity;quantification;detectionperformance

0 引言

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