%0 Journal Article
%T Minimum BER Bit Allocations for MIMO Spatial Multiplexing Systems<br>MIMO空间复用系统的最小BER比特分配
%A Che Xiao-linHe ChenJiang Ling-geXiong Yong
%A <br>车小林
%A 何晨
%A 蒋铃鸽
%A 熊勇
%J 电子与信息学报
%D 2008
%I 
%X Based on the minimum Bit Error Rate (BER) criterion, a greedy bit allocation algorithm and bisection-method based bit allocation algorithm are proposed for Multiple-Input Multiple-Output (MIMO) spatial multiplexing systems. Under the constraint of total bit rate and equal power allocation to each transmit antenna, the proposed transmit bit allocation algorithms can achieve better performance by optimizing the modulation order of each transmit antenna. The simulation results show that the proposed system can obtain significant Signal-to-Noise Ratio (SNR) gain relative to the conventional MIMO system. In addition, compared with the transmit power allocation scheme, the requirements on the dynamic range of the power amplifiers for each transmit antenna are reduced with little performance loss.
%K MIMO
%K Spatial multiplexing
%K Transmit Bit Allocation (TBA)
%K Transmit Power Allocation (TPA)<br>MIMO
%K 空间复用
%K 比特分配
%K 功率分配
%K MIMO
%K 空间
%K 复用系统
%K 最小
%K 比特分配
%K Systems
%K Multiplexing
%K Spatial
%K 动态范围
%K 功率放大器
%K 情况
%K 性能损失
%K 增益
%K 信噪比
%K 仿真结果
%K 改善
%K 调制方式
%K 分配优化
%K 条件
%K 约束
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=EFC0377B03BD8D0EF4BBB548AC5F739A&aid=B391016AC1DDF163A27CCEBED76B486B&yid=67289AFF6305E306&vid=340AC2BF8E7AB4FD&iid=E158A972A605785F&sid=141C24EC1980F602&eid=872F6C582A30BA57&journal_id=1009-5896&journal_name=电子与信息学报&referenced_num=0&reference_num=8