vix.ing · top · new · best · stats · spec

Approaching Optimal Centralized Scheduling with CSMA-based Random Access over Fading Channels

2016/04/01 by Mehmet Karaca, Karaca, Mehmet, Bjorn Landfeldt +1
Computer Science · Mathematics · #FOS: Computer and information sciences #Information Theory (cs.IT) #Networking and Internet Architecture (cs.NI) #cs.IT #cs.NI #math.IT

paper · pdf · doi:10.48550/arxiv.1604.00178

accepted to IEEE Communications Letters

arxiv created 2016/04/01 · arxiv updated 2016/04/04

Abstract

Carrier Sense Multiple Access (CSMA) based distributed algorithms can attain the largest capacity region as the centralized Max-Weight policy does. Despite their capability of achieving throughput-optimality, these algorithms can either incur large delay and have large complexity or only operate over non-fading channels. In this letter, by assuming arbitrary back-off time we first propose a fully distributed randomized algorithm whose performance can be pushed to the performance of the centralized Max-Weight policy not only in terms of throughput but also in terms of delay for completely-connected interference networks with fading channels. Then, inspired by the proposed algorithm we introduce an implementable distributed algorithm for practical networks with a reservation scheme. We show that the proposed practical algorithm can still achieve the performance of the centralized Max-Weight policy.

Related