DOI:10.20079/j.issn.1001-893x.211124004引用格式:王宇,马秀荣,单云龙.基于分布式压缩感知的改进SOMP信道估计算法[J].电讯技术,2023,63(2):249-254.[WANGY,MAXR,SHANYL.AnimprovedSOMPchannelestimationalgorithmbasedondistributedcompressedsensing[J].TelecommunicationEngineering,2023,63(2):249-254.]基于分布式压缩感知的改进SOMP信道估计算法*王宇1,2,马秀荣1,2,单云龙1,2(1.天津理工大学集成电路科学与工程学院,天津300384;2.光电器件与通信技术教育部工程研究中心,天津300384)摘要:针对多径信道联合稀疏模型,基于分布式压缩感知理论提出了一种适用于正交频分复用(OrthogonalFrequencyDivisionMultiplexing,OFDM)通信系统的改进同时正交匹配追踪(SimultaneousOrthogonalMatchingPursuit,SOMP)信道估计算法。该算法首先联合多个符号利用比较残差和的方式,在每次迭代中估计各符号信道响应公共支撑集与相应元素直到公共支撑集估计结束,然后对各符号信道响应非公共支撑集单独进行估计,最终得到多个符号的信道响应估计值。仿真结果表明,改进的SOMP算法在JSM-2模型下性能与传统的SOMP算法相近,在JSM-1模型下性能优于传统的SOMP算法与OMP算法。关键词:OFDM通信系统;信道估计;同时正交匹配追踪(SOMP);联合稀疏模型;分布式压缩感知开放科学(资源服务)标识码(OSID):微信扫描二维码听独家语音释文与作者在线交流享本刊专属服务中图分类号:TN911.23文献标志码:A文章编号:1001-893X(2023)02-0249-06AnImprovedSOMPChannelEstimationAlgorithmBasedonDistributedCompressedSensingWANGYu1,2,MAXiurong1,2,SHANYunlong1,2(1.SchoolofIntegratedCircuitScienceandEngineering,TianjinUniversityofTechnology,Tianjin300384,China;2.EngineeringResearchCenterofCommunicationDevicesandTechnology,MinistryofEducation,Tianjin300384,China)Abstract:Formultipathchanneljointsparsemodel,animprovedsimultaneousorthogonalmatchingpursuit(SOMP)channelestimationalgorithmsuitablefororthogonalfrequencydivisionmultiplexing(OFDM)communicationsystemisproposedbasedondistributedcompressedsensing.Thealgorithmfirstcombinesmultiplesymbolsandcomparestheresidualsum.Ineachiteration,itestimatesthecommonsupportsetandcorrespondingelementsofeachsymbolchannelresponseunt...