Discrete Rate Spectral Efficiency Improvement by Scheme Switching for MIMO Systems
作者单位：Royal Institute of Technology （KTH） StockholmSweden
会议名称：《2008 IEEE International Conference on Communications(ICC 2008)》
会议日期：2008年
学科分类：0810[工学-信息与通信工程] 08[工学] 081001[工学-通信与信息系统]
基 金：supported by the Swedish Strategy Foundation(SSF) funded project RaMSiS
摘 要：Adaptive modulation scheme has been widely used in multiple-input multiple-output （MIMO） systems to enhance spectral efficiency while maintaining the bit error rate （BER） under a target *** consider two MIMO schemes,orthogonal space-time block codes （OSTBC） and spatial multiplexing with zero-forcing receiver （SM-ZF）,that apply adaptive modulation scheme and derive closed-form expressions of the average spectral efficiency and *** on the closed-form expression of spectral efficiency,a low complexity switching method is utilized to obtain high spectral efficiency gain over an adaptive system using a single *** Terms-OSTBC,ZF,Adaptive modulation,CSIT.