多用户MIMO多载波系统空时预编码技术的研究  

PrecodingTechnology for Multi-user MIMO Multi-carrier System

作　　者：黄杰 

机构地区：[1]甘肃有色冶金职业技术学院,金昌737100

出　　处：《计算机与数字工程》2014年第10期1938-1939,1956,共3页Computer & Digital Engineering

摘　　要：多天线空时预编码技术利用信道状态信息能够有效地改善无线通信系统性能与吞吐量,成为未来无线移动通信领域研究的热点。根据发射端利用信道状态信息情况,预编码技术可分为完全信道预编码技术和部分信道预编码技术。文章主要研究了多用户MIMO多载波无线通信系统中空时预编码技术,研究了多用户MIMO多载波系统中空时预编码技术,文中还重点对基于码本的多用户MIMO预编码进行了研究。Multi-antenna space-time pre-coding at the transmitter as a modern signal processing technology can use im -perfect channel state information or partial channel state information to improve the system capacity or reduce bit error rate , thus becoming the research hot in wireless mobile communication .According to the transmitter using the channel state infor-mation case ,pre-coding techniques can be divided into imperfect channel pre-coding techniques and partial channel pre-coding techniques .In this paper ,the Space-Time Pre-coding for multi-user MIMO multi-carrier systems are studied ,multi-user MI-MO precoding based on codebook is focused on ,a limited feedback precoding method for multi-user MIMO-OFDM based on codebook perturbation is proposed .

关 键 词：多输入多输出 多载波 预编码 

分 类 号：TN929.5[电子电信—通信与信息系统]