Cognitive Spatial Multiplexing Scheme for MIMOCDMA Networks
The existing cognitive schemes have not considered cognitive spatial multiplexing (CSM) for MIMO-CDMA network, there are three vital problems to hinder CSMs application: spatial channels estimation for mobile stations(MSs), space-time coding and decoding for base station (BS) and MSs, the implementation complexity of BS and MSs. To solve the problems, a simplified cognitive spatial multiplexing scheme is proposed, including BS and MS systems, where MIMO BS in a cell has two antennas and each MS of lower moving speed has one antenna only. To ensure communication quality of the network, the scheme applies LDPC as the channel coding instead of space-time coding for BSs and MSs. BS assigns the same CDMA channels for MSs to have larger space interval. Simulations show that good spatial multiplexing capacity and BER performance have been achieved by the proposed scheme.
wireless communication cognitive MIMO spatial multiplexing encoding and decoding algorithms
Yang Xiao Kiseon Kim Guangzhi Qu
Institute of Information Science, Beijing Jiaotong University, Beijing 100044, China Dept.of Information and Communications, Gwangju Institute of Science and Technology, Gwangju 500-712 Dept.of Engineering and Computer Science, Oakland University, Rochester, MI48309, USA
国际会议
北京
英文
147-150
2010-09-26（万方平台首次上网日期，不代表论文的发表时间）