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

Record type: Article

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.

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Citation

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).

More information

Published date: 15 July 2014
Organisations: Southampton Wireless Group

Identifiers

Local EPrints ID: 367247
URI: http://eprints.soton.ac.uk/id/eprint/367247
ISSN: 0018-9545
PURE UUID: 17cc976a-aa13-4d14-97d8-589cd9e36404
ORCID for Mohammed El-Hajjar: ORCID iD orcid.org/0000-0002-7987-1401

Catalogue record

Date deposited: 19 Aug 2014 10:47
Last modified: 18 Jul 2017 02:01

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Contributors

Author: Ping Yang
Author: Yue Xiao
Author: Bo Zhang
Author: Shaoqian Li
Author: Mohammed El-Hajjar ORCID iD
Author: Lajos Hanzo

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