On the End-to-End Distortion for a Buffered Transmission over Fading Channel
| dc.creator | Li, Qiang | |
| dc.creator | Georghiades, C. N. | |
| dc.date | 2007-06-01 | |
| dc.date.accessioned | 2026-07-07T08:16:07Z | |
| dc.date.available | 2026-07-07T08:16:07Z | |
| dc.description | In this paper, we study the end-to-end distortion/delay tradeoff for a analogue source transmitted over a fading channel. The analogue source is quantized and stored in a buffer until it is transmitted. There are two extreme cases as far as buffer delay is concerned: no delay and infinite delay. We observe that there is a significant power gain by introducing a buffer delay. Our goal is to investigate the situation between these two extremes. Using recently proposed \emph{effective capacity} concept, we derive a closed-form formula for this tradeoff. For SISO case, an asymptotically tight upper bound for our distortion-delay curve is derived, which approaches to the infinite delay lower bound as $\mathcal{D}_\infty \exp(\frac{C}{τ_n})$, with $τ_n$ is the normalized delay, $C$ is a constant. For more general MIMO channel, we computed the distortion SNR exponent -- the exponential decay rate of the expected distortion in the high SNR regime. Numerical results demonstrate that introduction of a small amount delay can save significant transmission power. | |
| dc.identifier | https://arxiv.org/abs/0706.0225 | |
| dc.identifier | http://arxiv.org/abs/0706.0225 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/133671 | |
| dc.subject | Information Theory | |
| dc.title | On the End-to-End Distortion for a Buffered Transmission over Fading Channel | |
| dc.type | text |