Energy-Efficient Transmission Strategies for Delay Constrained Traffic With Limited Feedback

被引：14

作者：

Tomasi, Beatrice ^{[1
]}

Preisig, James C. ^{[1
]}

机构：

[1] Woods Hole Oceanog Inst, Dept Appl Ocean Phys & Engn, Woods Hole, MA 02543 USA

来源：

IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS | 2015年 / 14卷 / 03期

关键词：

Energy-efficient scheduling; stochastic optimal control; efficient wireless communications; VARYING WIRELESS NETWORKS; FADING CHANNELS; ALLOCATION; LINK;

D O I：

10.1109/TWC.2014.2365819

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this paper, we developed transmission strategies able to deliver a prescribed number of packets by a deadline T while minimizing transmission attempts. All the packets have a single common transmission deadline. The three systems analyzed here differ from each other on the way channel state information (CSI) is provided by the receiver. In the first system, the receiver sends back CSI only when packets fail; in the second system, the receiver provides CSI only if this minimizes a given cost function; and in the third system, feedback is sent whenever a given threshold condition is verified. The communication channel is modeled as a time-varying correlated fading channel, represented by a Markov chain. For the first two systems, the optimal schedules are obtained through dynamic programming (DP). The third scheduler is based on a heuristic strategy, whose performance is evaluated through numerical simulations, and compared with that of the two optimal schedulers obtained through DP. Results showed that the heuristic scheduler can reach performance similar to that of DP schedulers.

引用

页码：1369 / 1379

页数：11

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