论文标题
空间调制系统的可靠检测
Reliable Detection for Spatial Modulation Systems
论文作者
论文摘要
空间调制（SM）是一种有希望的多输入多输出系统，用于提高光谱效率。最大似然（ML）解码器共同检测到具有很高复杂性的传输SM符号。在本文中，为SM系统提出了一种基于树搜索的新型可靠的球体解码器（RSD）算法。提出的RSD算法的基本思想是减少树搜索的大小，然后执行还原的树搜索中的智能搜索方法以找到解决方案。与ML解码器和存在的解码器相比，所提出的RSD算法可显着降低解码复杂性。此外，RSD算法在BIT错误率（BER）性能和解码复杂性之间提供了灵活的权衡，从而可以对广泛的实用硬件实现可靠。研究了RSD算法的BER性能和解码复杂性分析，然后提供蒙特卡洛模拟以证明这些发现。
Spatial modulation (SM) is a promising multiple-input multiple-output system used to increase spectral efficiency. The maximum likelihood (ML) decoder jointly detects the transmitted SM symbol, which is of high complexity. In this paper, a novel reliable sphere decoder (RSD) algorithm based on tree-search is proposed for the SM system. The basic idea of the proposed RSD algorithm is to reduce the size of the tree-search, and then, a smart searching method inside the reduced tree-search is performed to find the solution. The proposed RSD algorithm provides a significant reduction in decoding complexity compared to the ML decoder and existent decoders as well. Moreover, the RSD algorithm provides a flexible trade-off between the bit error rate (BER) performance and decoding complexity, so as to be reliable for a wide range of practical hardware implementations. The BER performance and decoding complexity analysis for the RSD algorithm are studied, and Monte Carlo simulations are then provided to demonstrate the findings.
