Research Article
On the Optimal Number of Hops in Linear Wireless Ad Hoc Networks with Hybrid ARQ
@INPROCEEDINGS{10.4108/ICST.WIOPT2008.3030, author={Igor Stanojev and Osvaldo Simeone and Yeheskel Bar-Ness and Myeon-gyun Cho}, title={On the Optimal Number of Hops in Linear Wireless Ad Hoc Networks with Hybrid ARQ}, proceedings={6th International ICST Symposium on Modeling and Optimization}, publisher={IEEE}, proceedings_a={WIOPT}, year={2008}, month={8}, keywords={Automatic repeat request Data communication Decoding Delay Fading Mobile ad hoc networks Relays Routing Spread spectrum communication Wireless application protocol}, doi={10.4108/ICST.WIOPT2008.3030} }- Igor Stanojev
Osvaldo Simeone
Yeheskel Bar-Ness
Myeon-gyun Cho
Year: 2008
On the Optimal Number of Hops in Linear Wireless Ad Hoc Networks with Hybrid ARQ
WIOPT
IEEE
DOI: 10.4108/ICST.WIOPT2008.3030
Abstract
In this paper, we study the optimal design of a linear wireless multihop network that employs Hybrid Automatic Repeat reQuest (HARQ) protocols in a quasi-static fading environment. Data transmission is assumed to be delay-tolerant up to a certain predefined maximum delay (in transmission slots) that is larger or equal to the number of hops. Multihop routing is implemented through a time-division scheduling and decode-andforward relaying. Excess time is exploited for retransmissions using either HARQ Type I or Chase Combining protocols on the hops that result in link-outage. Relying on analysis and numerical optimization, we seek answer to the following question: given the maximum allowed delay and signal-to-noise ratio, what is the optimal number of hops that maximizes the end-to-end throughput?
