Energy optimal scheduler for diversity fading channels with maximum delay constraints
| Autor: | J. Cavers, Shyh-hao Kuo |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
business.industry
Orthogonal frequency-division multiplexing Computer science Network packet Applied Mathematics Quality of service MIMO Link adaptation Data_CODINGANDINFORMATIONTHEORY Topology Computer Science Applications Scheduling (computing) Packet switching Wireless Fading Electrical and Electronic Engineering business Computer network Communication channel |
| Zdroj: | IEEE Transactions on Wireless Communications. 8:5520-5529 |
| ISSN: | 1536-1276 |
| DOI: | 10.1109/twc.2009.080690 |
| Popis: | We present a minimal energy packet scheduling and rate control scheme with a strict maximum delay constraint. This problem occures natually in real-time wireless multimedia transmission where a hard delay limit is imposed on each packet. In general, the communication link is assumed to be a diversity channel with multiple parallel sub-channels(e.g. OFDM, or MIMO eigenchannels.) We present both the theoretical optimal solution, which assumes prescient traffic and channel knowlodge, and a causal scheduler where the future is only known statistically. We show that the causal scheduler performs well, to within 3 dB of the prescient optimal in a single channel, and is even better with diversity channels. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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