DMCA
Bursty transmission and glue pouring: on wireless channels with overhead costs (2008)
| Venue: | IEEE Transactions on Wireless Communications |
| Citations: | 11 - 0 self |
BibTeX
@ARTICLE{Youssef-massaad08burstytransmission,
author = {Pamela Youssef-massaad and Lizhong Zheng and Muriel Médard},
title = {Bursty transmission and glue pouring: on wireless channels with overhead costs},
journal = {IEEE Transactions on Wireless Communications},
year = {2008},
pages = {5188--5194}
}
Share
 |
 |
 |
 |
||
OpenURL
Abstract
Abstract—Power efficiency is a capital issue in the study of mobile wireless nodes owing to constraints on their battery size and weight. In practice, especially for low-power nodes, it is often the case that the power consumed for non-transmission processes is not always negligible. In this paper, we consider the channels with a special form of overhead: a processing energy cost whenever a non-zero signal is transmitted. We show that under certain conditions, achieving the capacity of such channels requires intermittent, or ‘bursty’, transmissions. Thus, an optimal sleeping schedule can be specified for wireless nodes to achieve the optimal power efficiency. We show that in the low SNR regime, there is a simple relation between the optimal burstiness and the overhead cost: one should use a fraction of the available degrees of freedom at an SNR level of √ 2ɛ, where ɛ is the normalized overhead energy cost. We extend this result to use bursty Gaussian transmissions in multiple parallel channels with different noise levels. Our result can be intuitively interpreted as a “glue pouring ” process, generalizing the wellknown water pouring solution. We then use this approach to compute the achievable rate region of the multiple access channel with overhead cost. Index Terms—Low power algorithms and protocols, multimedia, networks and systems, UWB, transmission technology, medium access control, multimedia, networks and systems. I.
Keyphrases
overhead cost bursty transmission glue pouring wireless channel medium access control wireless node simple relation available degree optimal sleeping schedule abstract power efficiency certain condition processing energy cost non-transmission process different noise level capital issue mobile wireless node battery size bursty gaussian transmission multiple parallel channel glue pouring process snr level multiple access channel normalized overhead energy cost index term low power algorithm wellknown water optimal power efficiency transmission technology low snr regime optimal burstiness achievable rate region non-zero signal special form
