四川大学学报：工程科学版2012，Vol.44Issue(6)：116-119,4.
下行多用户MIMO系统中低复杂度块对角化预编码算法
A Low ComplexitY Block Diagonalization Precoding Algorithm for Multiuser MIMO Downlink Systems
摘要
Abstract
To reduce the computational complexity of block diagonalization precoding algorithm and ensure the BER performance, a block diagonalization precoding algorithm, named as LDLH-BD( QR), was proposed for muhiuser multi-input multi-output (MIMO) sys- tems, based on pseudo inverse and LDLH decomposition. Firstly, computational complexity was reduced by combining global channel ma- trix pseudo-inverse and QR decomposition. Therefore, channel block diagonalization was fast finished. Furthermore, the LDLH decompo- sition which has moderate subchannel gains uniformity was applied to optimize the equivalent channel for each single-user, so that proc- oding matrix was completed. Simulation results showed that the proposed algorithm has less computational complexity and similar bit er- ror rate performance as the traditional block diagonalization algorithm.关键词
多输入多输出/预编码/块对角化/计算复杂度Key words
muhiple-input multiple-output(MIMO)/precoding/block diagonalization/computational complexity分类
信息技术与安全科学引用本文复制引用
吴玉成,刘阳,潘怡瑾..下行多用户MIMO系统中低复杂度块对角化预编码算法[J].四川大学学报：工程科学版,2012,44(6):116-119,4.基金项目
国家自然科学基金资助项目 （）
中央高校基本科研业务费专项资助项目 （）
