{"title":"Concurrent channel access and estimation for scalable multiuser MIMO networking","authors":"Tsung-Han Lin, H. T. Kung","doi":"10.1109/INFCOM.2013.6566751","DOIUrl":null,"url":null,"abstract":"This paper presents MIMO/CON, a PHY/MAC cross-layer design for multiuser MIMO wireless networks that delivers throughput scalable to many users. MIMO/CON supports concurrent channel access from uncoordinated and loosely synchronized users. This new capability allows a multi-antenna MIMO access point (AP) to fully realize its MIMO capacity gain. MIMO/CON draws insight from compressive sensing to carry out concurrent channel estimation. In the MAC layer, MIMO/CON boosts channel utilization by exploiting normal MAC layer retransmissions to recover otherwise undecodable packets in a collision. MIMO/CON has been implemented and validated on a 4×4 MIMO testbed with software-defined radios. In software simulations, MIMO/CON achieves a 210% improvement in MAC throughput over existing staggered access protocols in a 5-antenna AP scenario.","PeriodicalId":206346,"journal":{"name":"2013 Proceedings IEEE INFOCOM","volume":"53 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2013-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"22","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2013 Proceedings IEEE INFOCOM","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/INFCOM.2013.6566751","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 22
Abstract
This paper presents MIMO/CON, a PHY/MAC cross-layer design for multiuser MIMO wireless networks that delivers throughput scalable to many users. MIMO/CON supports concurrent channel access from uncoordinated and loosely synchronized users. This new capability allows a multi-antenna MIMO access point (AP) to fully realize its MIMO capacity gain. MIMO/CON draws insight from compressive sensing to carry out concurrent channel estimation. In the MAC layer, MIMO/CON boosts channel utilization by exploiting normal MAC layer retransmissions to recover otherwise undecodable packets in a collision. MIMO/CON has been implemented and validated on a 4×4 MIMO testbed with software-defined radios. In software simulations, MIMO/CON achieves a 210% improvement in MAC throughput over existing staggered access protocols in a 5-antenna AP scenario.
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