Masouros, C;
Hanzo, L;
(2017)
A Scalable Performance-Complexity Tradeoff for Constellation Randomization in Spatial Modulation.
IEEE Transactions on Vehicular Technology
, 66
(3)
pp. 2834-2838.
10.1109/TVT.2016.2572760.
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Abstract
It is widely recognized that traditional single radio frequency (RF)-chain-aided spatial modulation (SM) does not offer any transmit diversity gain. As a remedy, constellation randomization (CR), relying on transmit prescaling (TPS), has been shown to provide transmit diversity for single-RF-chain-aided SM. In this paper, we propose a low-complexity approach to SM with the aid of constellation randomization (SM-CR) that considerably improves the transmit diversity gain of SM at a reduced computational burden compared with conventional SM-CR. While conventional SM-CR performs a full search among a set of candidate TPS factors to achieve the maximum minimum Euclidean distance (MED) in the received SM constellation, here, we propose a thresholding approach, where, instead of the maximum MED, the TPS aims to satisfy a specific MED threshold. This technique offers a significant complexity reduction with respect to the full maximization of SM-CR, since the search for TPS is terminated once a TPS set is found that satisfies the MED threshold. Our analysis and results demonstrate that a scalable tradeoff can be achieved between transmit diversity and complexity by appropriately selecting the MED threshold, where a significant complexity reduction is attained, while achieving a beneficial transmit diversity gain for the single-RF SM.
| Type: | Article |
|---|---|
| Title: | A Scalable Performance-Complexity Tradeoff for Constellation Randomization in Spatial Modulation |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/TVT.2016.2572760 |
| Publisher version: | https://doi.org/10.1109/TVT.2016.2572760 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Science & Technology, Technology, Engineering, Electrical & Electronic, Telecommunications, Transportation Science & Technology, Engineering, Transportation, Constellation shaping, multiple-input single-output, spatial modulation (SM), transmit prescaling (TPS), Information, Diversity, Channels |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1550920 |
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