Cooperative Spatial Multiplexing for CR Users Sharing a Common Channel with Primary Users*

fcb00b04-c2b8-492c-bce9-96f3eda46cf420220123040709250wseas:wseasmdt@crossref.orgMDT DepositWSEAS TRANSACTIONS ON SIGNAL PROCESSING2224-34881790-505210.37394/232014http://wseas.org/wseas/cms.action?id=4062331202133120211710.37394/232014.2021.17https://wseas.org/wseas/cms.action?id=23315Cooperative Spatial Multiplexing for CR Users Sharing a Common Channel with Primary Users*YangXiaoInstitute of Information Science Beijing Jiaotong University Beijing 100044,P.R. CHINAJinfengKouInstitute of Information Science Beijing Jiaotong University Beijing 100044,P.R. CHINATo enable mobile stations (MSs) of secondary users (SUs) in cognitive radio (CR) networks sharing a common channel with MSs of primary users (PUs) is an important but challenging issue. In this paper, a cooperative spatial multiplexing (CSM) scheme is proposed, where base station (BS) in CR network has K antennas and each SU or PU has one antenna only, and BS supports PUs and SUs by K spatial channels. 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