论文标题
MIMO继电器广播频道的联合来源和继电器设计
Joint Source and Relay Design for MIMO Relaying Broadcast Channels
论文作者
论文摘要
在这封信中，我们针对基于加权总和率标准的直接链接〜（dls）的多输入多输出〜（MIMO）中继矩阵设计〜（MIMO）中继广播通道〜（bc）。这是非线性非convex及其最佳解决方案保持打开状态。为了开发一种解决此问题的有效方法，我们首先设置了一个等效的问题，并通过将其分解为两个可牵引的子问题来解决它。最后，我们根据替代优化提出了一种通用线性迭代设计算法。这种迭代设计算法是收敛的，因为每个子问题的解决方案都是最佳且独特的。数值实验证明了所提出的迭代设计方案的优势。
In this letter, we address the optimal source and relay matrices design for the multiple-input multiple-output~(MIMO) relaying broadcast channels~(BC) with direct links~(DLs) based on weighted sum-rate criterion.This problem is nonlinear nonconvex and its optimal solution remains open. To develop an efficient way to solve this problem,we first set up an equivalent problem, and solve it by decoupling it into two tractable subproblems. Finally, we propose a general linear iterative design algorithm based on alternative optimization. This iterative design algorithm is convergent since the solution of each subproblem is optimal and unique. The advantage of the proposed iterative design scheme is demonstrated by numerical experiments.
