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International Journal of Antennas and Propagation - Volume 2015 2015, Article ID 242945, 6 pages -

Research Article

National Key Laboratory of Science and Technology on Communications, University of Electronic Science and Technology of China, Chengdu 611731, China

National Mobile Communications Research Laboratory, Southeast University, Nanjing 210018, China

Received 26 August 2015; Accepted 10 November 2015

Academic Editor: Periklis Chatzimisios

Copyright © 2015 Peng Wei et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Transmit antenna selection TAS is an efficient way for improving the system performance of spatial modulation SM systems. However, in the case of large-scale multiple-input multiple-output MIMO configuration, the computational complexity of TAS in large-scale SM will be extremely high, which prohibits the application of TAS-SM in a real large-scale MIMO system for future 5G wireless communications. For solving this problem, in this paper, two novel low-complexity TAS schemes, named as norm-angle guided subset division NAG-SD and threshold-based NAG-SD ones, are proposed to offer a better tradeoff between computational complexity and system performance. Simulation results show that the proposed schemes can achieve better performance than traditional TAS schemes, while effectively reducing the computational complexity in large-scale spatial modulation systems.





Autor: Peng Wei, Lu Yin, Yue Xiao, Xu He, and Shaoqian Li

Fuente: https://www.hindawi.com/



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