自适应STBC-VBLAST系统的QRD-M检测  

QRD-M detection of the adaptive STBC-VBLAST Systems

作　　者：王翠[1] 周围[1,2] 

机构地区：[1]重庆邮电大学移动通信技术重庆市重点实验室,重庆400065 [2]重庆邮电大学光电工程学院,重庆400065

出　　处：《数字通信》2014年第4期9-13,共5页Digital Communications and Networks

基　　金：国家高技术研究发展计划(863计划)重点项目(2009AA011302);重庆邮电大学研究生教育创新计划重点项目(Y201019);重庆市教委科研项目(K1090513)

摘　　要：综合考虑多输入多输出(MIMO)系统的分集和复用增益,将STBC和VBLAST 2种编码方案结合起来组成STBC-VBLAST混合系统,实现了数据传输速率和可靠性之间的折衷。根据无线信道的时变特性,自适应地调整发射天线,提高了系统的灵活性,并在接收端引入新的QRD-M译码算法。仿真结果表明,该算法进一步降低了系统误码率,提高了系统性能。Considering the diversity and multiplexing gain of the multiple input multiple output（MIMO） system, two kinds of coding schemes-STBC and VBLAST are combined to compose the STBC-VBLAST hybrid system, which can achieve a compromise between the data transmission rate and reliability. According to the time-varying characteristic of wireless channel, transmitting antenna are adaptively adjusted, which can improve the flexibility of the system, and this paper introduces a new QRD-M decoding algorithm at the receiving end. The simulation results show that the ＇algorithm presented in this pa- per can further reduce the system error rate and improve the system performance.

关 键 词：多输入多输出(MIMO)系统 自适应STBC-VBLAST系统 QRD-M译码算法 

分 类 号：TN919.3[电子电信—通信与信息系统]