Reliable Detection for Spatial Modulation Systems

Autor:	Al-Nahhal, Ibrahim, Dobre, Octavia A., Ikki, Salama
Rok vydání:	2020
Předmět:	Computer Science - Information Theory Computer Science - Computational Complexity
Druh dokumentu:	Working Paper
Popis:	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. Comment: 5 pages, 7 figures, to be appeared on IEEE VTC-Fall 2020
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2006.05084 Zobrazit plný text záznamu View this record from Arxiv