Adaptive Modulation in MIMO System under Power and QoS Constraints

摘要：

A bit loading and power allocation algorithm formultiple-input multiple-output (MIMO) systems underaverage transmit power and QoS constraints is proposed. Thetruncated right unitary matrix as precoder at transmitter andtruncated left unitary matrix as decoder at receiver which areobtained by singular value decomposition (SVD) choosevariable eigen-subchannels to carry Bell Laboratories LayeredSpace–Time (BLAST) codes with variable layers. We comparethe average spectral efficiency (ASE) of our scheme with theother two adaptive modulation (AM) systems—continuous rate(CR) system and instantaneous power constraint (IPC) system.Performance is investigated by simulation results.

作者: Jie Hu Xianzhong Xie Shuangping Huang

作者单位: Engineering College, South China Agriculture University, Guangzhou,510642, P.R.China Key Lab of Mobile Communications, Chongqing University of Posts and Telecommunications,Chongqing,400

会议类型: 国际会议

会议名称: 2007年通信、电路与系统国际会议(2007 International Conference on Communications,Circuits and Systems Proceedings)

会议地点: 日本福冈

会议语种:英文

在线出版日期: 2007-07-11（万方平台首次上网日期，不代表论文的发表时间）