多用户MIMO系统广播信道的连续块对角化预编码算法

针对块对角化（BD）算法无法满足各个用户的需要、串行优化（ SO）算法排序复杂、容量较低的问题，提出了一种连续块对角化（SBD）算法。该算法按照 各用户的信道条件、服务质量（QoS）需求给用户定义不同的优先级，并按优先级次序进行 块对角化，后续用户在对高优先级用户及同优先级用户不干扰的条件下采用块对角化法抵消 共信道干扰（CCI），功率分配方式采用等功率分配。数值仿真表明，该算法在不增加计算 复杂度的前提下 ，基本满足各个用户的需求。

Successive Block Diagonalization Precoding Algorithm for MU-MIMO Broadcast Channels

To solve the problem that block diagonalization(BD) precoding can not meet the needs of each user and successive optimization(SO) orders and users with high co mplexity has low capacity,a succe ssive block diagonalization(SBD) precoding is proposed. SBD precoder defines the priority of each user according to its channel state and quality of service(QoS). The latter users eliminate the CCI w ith the aid of BD, without interfering the users with higher or equal priorities . The SBD precoder distributes the power equally. The numerical results reveal t hat SBD precoding algorithm can basically meet the needs of users without extra complexity.