{"title":"减小天线间距对蜂窝下行接收机抗干扰组合后处理信噪比的影响","authors":"Karthik Ks, B. Ramamurthi","doi":"10.1109/NCC.2013.6487931","DOIUrl":null,"url":null,"abstract":"The user equipments (UEs) in fourth-generation cellular networks employ multiple receive antennas for improved performance and reliability. In this scenario, interference rejection combining (IRC) has become a receiver of choice for its desirable properties such as interference mitigation and reduced complexity. Interference covariance matrix (ICM) inversion is a key step in obtaining the combiner weights in such a receiver. In this work, we study the impact of reduced antenna spacing on the post-processing signal-to-interference-plus-noise ratio (SINR) that is achievable in a UE performing IRC. We also investigate the invertibility and condition number of the ICM and its effects on the post-processing SINR. Finally, we study the impact of reduced antenna spacing on the post-processing SINR when there are channel estimation errors.","PeriodicalId":202526,"journal":{"name":"2013 National Conference on Communications (NCC)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2013-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Impact of reduced antenna spacing on the post-processing SINR of interference rejection combining in cellular downlink receivers\",\"authors\":\"Karthik Ks, B. Ramamurthi\",\"doi\":\"10.1109/NCC.2013.6487931\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The user equipments (UEs) in fourth-generation cellular networks employ multiple receive antennas for improved performance and reliability. In this scenario, interference rejection combining (IRC) has become a receiver of choice for its desirable properties such as interference mitigation and reduced complexity. Interference covariance matrix (ICM) inversion is a key step in obtaining the combiner weights in such a receiver. In this work, we study the impact of reduced antenna spacing on the post-processing signal-to-interference-plus-noise ratio (SINR) that is achievable in a UE performing IRC. We also investigate the invertibility and condition number of the ICM and its effects on the post-processing SINR. Finally, we study the impact of reduced antenna spacing on the post-processing SINR when there are channel estimation errors.\",\"PeriodicalId\":202526,\"journal\":{\"name\":\"2013 National Conference on Communications (NCC)\",\"volume\":\"19 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2013-03-28\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2013 National Conference on Communications (NCC)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/NCC.2013.6487931\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2013 National Conference on Communications (NCC)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/NCC.2013.6487931","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Impact of reduced antenna spacing on the post-processing SINR of interference rejection combining in cellular downlink receivers
The user equipments (UEs) in fourth-generation cellular networks employ multiple receive antennas for improved performance and reliability. In this scenario, interference rejection combining (IRC) has become a receiver of choice for its desirable properties such as interference mitigation and reduced complexity. Interference covariance matrix (ICM) inversion is a key step in obtaining the combiner weights in such a receiver. In this work, we study the impact of reduced antenna spacing on the post-processing signal-to-interference-plus-noise ratio (SINR) that is achievable in a UE performing IRC. We also investigate the invertibility and condition number of the ICM and its effects on the post-processing SINR. Finally, we study the impact of reduced antenna spacing on the post-processing SINR when there are channel estimation errors.
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