DocumentCode :
1693483
Title :
Capacity of Wireless Multi-hop Networks Using Physical Carrier Sense and Transmit Power Control
Author :
Gürses, Eren ; Boutaba, Raouf
Author_Institution :
Sch. of Comput. Sci., Univ. of Waterloo, Waterloo, ON, Canada
fYear :
2009
Firstpage :
1
Lastpage :
6
Abstract :
In this paper, we investigate the capacity of CSMA (carrier sense multiple access) based wireless multi-hop networks with random topologies described by the hop length distribution. First we develop an analytical model for the effective link capacity as a function of transmit power adaptation policy, physical carrier sense threshold, hop length distribution and medium access probability of p-persistent CSMA. Secondly, we devise an optimal transmit power control scheme that maximizes the network capacity by adjusting the transmit power and the corresponding physical carrier sense threshold. Thereafter, it is extended for the joint optimization of these parameters with the medium access probability of CSMA. Finally we compare the optimal power control scheme with the minimum transmit power policy in. Results show that the proposed power control scheme optimally trades off the spatial reuse (number of interfering links) to the link SIR (signal-to-interference ratio) and achieves an amount of ~%15 increase in network capacity when both schemes employ joint optimization.
Keywords :
carrier sense multiple access; probability; radio links; telecommunication network topology; CSMA; carrier sense multiple access; hop length distribution; joint optimization; link capacity; medium access probability; network capacity; optimal transmit power control scheme; physical carrier sense; power adaptation policy; random topologies; signal-to-interference ratio; transmit power control; wireless multihop networks; Adaptive coding; Analytical models; Capacity planning; Computer science; Modulation coding; Multiaccess communication; Power control; Signal to noise ratio; Spread spectrum communication; Wireless sensor networks;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Global Telecommunications Conference, 2009. GLOBECOM 2009. IEEE
Conference_Location :
Honolulu, HI
ISSN :
1930-529X
Print_ISBN :
978-1-4244-4148-8
Type :
conf
DOI :
10.1109/GLOCOM.2009.5425854
Filename :
5425854
Link To Document :
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