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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Tesanovic, M. Bull, D.R. Doufexi, A. |
| Copyright Year | 2008 |
| Description | Author affiliation: Univ. of Bristol, Bristol (Tesanovic, M.; Bull, D.R.; Doufexi, A.) |
| Abstract | Promising performance of multiple-description coding (MDC) as a suitable video decomposition for MIMO (multiple-input-multiple-output) wireless transmission, reported previously by a number of authors, is further enhanced in this paper by investigating power allocation in MIMO systems that employ singular value decomposition (SVD). Inspired by the water-filling power allocation strategy, results demonstrate that further improvements over conventional, single-description coding (SDC) are possible if, for low SNRs, stronger sub-channel is boosted at the expense of the weaker channel. For high SNR values, the converse is true. A simple yet effective power allocation strategy whereby the bulk of the transmit power - the highest value considered was nine tenths - was allocated to the stronger channel (weaker channel) for very low (very high) SNRs yielded improvements of up to 4 dB (1 dB) in average MDC PSNR over the nominal - equal power allocation - case. The PSNR gains for low SNR values even exceeded the gains arising from water-filling. |
| Starting Page | 2024 |
| Ending Page | 2027 |
| File Size | 231673 |
| Page Count | 4 |
| File Format | |
| ISBN | 9781424417650 |
| ISSN | 15224880 |
| DOI | 10.1109/ICIP.2008.4712182 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2008-10-12 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | MIMO Samarium PSNR Video coding Diversity reception Decoding Streaming media Image communication Singular value decomposition Multimedia communication unequal power allocation (UPA) MIMO systems error-resilient video coding multiple-description coding video mapping |
| Content Type | Text |
| Resource Type | Article |
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