Optimal power allocation for SM-OFDM systems with imperfect channel estimation

Feng Yu, Lijun Song, Xia Lei, Yue Xiao, Zhao Xiang Jiang and Maozhu Jin

Chaos, Solitons & Fractals, 2016, vol. 89, issue C, 263-269

Abstract: This paper analyses the bit error rate (BER) of the spatial modulation orthogonal frequency division multiplex (SM-OFDM) system and derives the optimal power allocation between the data and the pilot symbols by minimizing the upper bound for the BER operating with imperfect channel estimation. Furthermore, we prove the proposed optimal power allocation scheme applies to all generalized linear interpolation techniques with the minimum mean square error (MMSE) channel estimation . Simulation results show that employing the proposed optimal power allocation provides a substantial gain in terms of the average BER performance for the SM-OFDM system compared to its equal-power-allocation counterpart.

Keywords: Spatial modulation orthogonal frequency division multiplex; Channel estimation; Power allocation (search for similar items in EconPapers)
Date: 2016
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Persistent link: https://EconPapers.repec.org/RePEc:eee:chsofr:v:89:y:2016:i:c:p:263-269

DOI: 10.1016/j.chaos.2015.11.014

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