Journal
IEEE COMMUNICATIONS LETTERS
Volume 20, Issue 3, Pages 622-625Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LCOMM.2016.2518662
Keywords
Spatial modulation; antenna selection; cross-entropy
Categories
Funding
- National Science Foundation of China [61471090]
- National High-Tech R&D Program of China [2015AA01A709]
- open research fund of National Mobile Communications Research Laboratory, Southeast University [2013D05]
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Euclidean distance optimized antenna selection (EDAS) can significantly improve the bit-error-rate (BER) performance of spatial modulation (SM) systems. However, the exhaustive search over all possible antenna subsets leads to inherently high-search complexity. In this letter, a cross-entropy-based antenna selection (CEAS) scheme is proposed, by formulating the antenna selection problem in SM as a combinatorial optimization one. Simulation results show that the proposed CEAS scheme achieves considerable reduction in search complexity, while approaching the optimal performance of exhaustive search.
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