Power allocation-aided spatial modulation for limited-feedback MIMO systems

Yang, Ping, Xiao, Yue, Zhang, Bo, Li, Shaoqian, El-Hajjar, Mohammed and Hanzo, Lajos (2014) Power allocation-aided spatial modulation for limited-feedback MIMO systems IEEE Transactions on Vehicular Technology, pp. 1-16. (doi:10.1109/TVT.2014.2339297).


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Adaptive power allocation (PA) algorithms based on optimization of the minimum distance dmin between signal points at the receiver side are investigated in spatial modulation (SM) systems. Firstly, a closed-form solution of the optimal maximum-dmin aided PA algorithm is derived in the case of two transmit antennas. Moreover, for a higher number of transmit antennas (TA), we propose a numerical approach, which appropriately splits the power between the specific TA-pair associated with dmin, so as to increase this distance. Furthermore, our PA-aided SM systems may be readily combined with adaptive modulation (AM) for further improving the system’s performance. Our numerical results show that the proposed algorithms provide beneficial system performance improvements compared to both the equal-gain PA based SM and the identical-throughput PA-aided spatial multiplexing systems.

Item Type: Article
Digital Object Identifier (DOI): doi:10.1109/TVT.2014.2339297
ISSNs: 0018-9545 (print)
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Organisations: Southampton Wireless Group
ePrint ID: 367247
Date :
Date Event
15 July 2014Published
Date Deposited: 19 Aug 2014 10:47
Last Modified: 17 Apr 2017 13:24
Further Information:Google Scholar
URI: http://eprints.soton.ac.uk/id/eprint/367247

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