MSE-Based Hybrid RF/Baseband Processing for Millimeter-Wave Communication Systems in MIMO Interference Channels
MSE-Based Hybrid RF/Baseband Processing for Millimeter-Wave Communication Systems in MIMO Interference Channels
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DOI：
10.1109/tvt.2014.2346400
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发表时间：
2015-06
影响因子：
6.8
通讯作者：
Minhyun Kim;Y. H. Lee
中科院分区：
文献类型：
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作者：
Minhyun Kim;Y. H. Lee
我们考虑设计的混合多输入多输出（MIMO）处理器组成的射频（RF）波束形成器和基带MIMO处理器的毫米波通信多用户干扰信道。稀疏逼近问题制定的混合MIMO处理器的设计近似的最小均方误差发送/接收处理器在MIMO干扰信道。它们通过基于正交匹配追踪的算法来解决，该算法从一组候选向量中连续选择RF波束成形向量，并在最小二乘意义上优化相应的基带处理器。研究表明，可以通过考虑不同类型的候选向量集来设计各种波束形成器。仿真结果表明，所提出的设计优于传统的方法，设计后的RF波束的基带处理器。
We consider the design of a hybrid multiple-input multiple-output (MIMO) processor consisting of a radio frequency (RF) beamformer and a baseband MIMO processor for millimeter-wave communications over multiuser interference channels. Sparse approximation problems are formulated to design hybrid MIMO processors approximating the minimum-mean-square-error transmit/receive processors in MIMO interference channels. They are solved by orthogonal-matching-pursuit-based algorithms that successively select RF beamforming vectors from a set of candidate vectors and optimize the corresponding baseband processor in the least squares sense. It is shown that various beamformers can be designed by considering different types of candidate vector sets. Simulation results demonstrate the advantage of the proposed design over the conventional method that designs the baseband processor after steering the RF beams.