Paper Info
Title
Optimal Power Allocation for PSM-OFDM Systems With Imperfect Channel Estimation.
Abstract
Precoding aided spatial modulation (PSM) constitutes a flexible closed-loop multiple input multiple output transmission scheme, which benefits from both low cost and low complexity at the receiver side. In PSM, a single receive antenna is activated and a number of bits are conveyed by the index of the receiving antenna, in addition to the bits conveyed by a conventional amplitude-phase modulation symbol. In this paper, bit error rate (BER) of the PSM orthogonal frequency division multiplex (PSM-OFDM) system is investigated and the optimal power allocation between the data and the pilot symbols by minimizing the upper bound for the BER with imperfect channel estimation is derived. Furthermore, we prove that the proposed optimal power allocation scheme can be applied to all generalized linear interpolation techniques with the minimum mean square error channel estimation. Simulation results demonstrate that the proposed optimal power allocation scheme provides significant improvements in terms of the average BER performance for the PSM-OFDM system compared with its equal-power-allocation counterpart.
Year
DOI
Venue
2018
10.1109/ACCESS.2018.2818940
IEEE ACCESS
Keywords
Field
DocType
Precoding aided spatial modulation (PSM),orthogonal frequency division multiplex (OFDM),power allocation (PA),multiple input multiple output (MIMO)
Computer science,Upper and lower bounds,Communication channel,Minimum mean square error,Algorithm,Modulation,Linear interpolation,Precoding,Orthogonal frequency-division multiplexing,Distributed computing,Bit error rate
Journal
Volume
ISSN
Citations 
6
2169-3536
0
PageRank 
References 
Authors
0.34
0
5
Name
Order
Citations
PageRank
You Li143.43
Yashan Pang200.34
Wanbin Tang313819.42
Xia Lei47118.34
Yue Xiao575863.17