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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Jiayi Zhang Lie-Liang Yang Hanzo, L. |
| Copyright Year | 2010 |
| Abstract | In this contribution we exploit the benefits of combining the diversity gains arising from cooperation, multiple propagation paths and from the opportunistic scheduling of multiple users, for the sake of supporting a power-efficient single-relay assisted single-carrier frequency-division multiple-access uplink, where each relay supports a single user communicating over dispersive channels subject to large-scale fading. Based on the proposed joint frequency-domain equalisation and diversity combining aided receiver relying on the minimum mean-square error criterion, two different relay selection schemes designed for single-user and multi-user scenarios are investigated, which employ imperfect power control. Our results show that at a bit error ratio of $10^{-4}$, the proposed receiver is capable of saving $2$dB power by achieving a higher cooperative diversity gain than the conventional receiver. Moreover, an approximately $6.8$dB and $8$dB transmit power reduction are attainable by invoking the proposed selective diversity oriented single-user and multi-user relay selection schemes, respectively. Most importantly, a power-efficiency improvement is gleaned from our multi-user relay selection scheme, which avoids the effects of deep shadowing and provides $9.7$dB power reduction compared to the non-cooperation scenario. |
| Starting Page | 1 |
| Ending Page | 5 |
| File Size | 168144 |
| Page Count | 5 |
| File Format | |
| ISBN | 9781424425181 |
| ISSN | 15502252 |
| DOI | 10.1109/VETECS.2010.5493858 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2010-05-16 |
| Publisher Place | Taiwan |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Relays Diversity reception Power system relaying Diversity methods Fading Large-scale systems Power control Frequency diversity Shadow mapping Interference |
| Content Type | Text |
| Resource Type | Article |
| Subject | Applied Mathematics Electrical and Electronic Engineering Computer Science Applications |
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