DocumentCode :
2893269
Title :
Multi-User Joint Subchannel and Power Resource-Allocation for Powerline Relay Networks
Author :
Zou, Hao ; Chowdhery, Aakanksha ; Jagannathan, Sumanth ; Cioffi, John M. ; Le Masson, Jérôme
Author_Institution :
Dept. of Electr. Eng., Stanford Univ., Stanford, CA, USA
fYear :
2009
fDate :
14-18 June 2009
Firstpage :
1
Lastpage :
5
Abstract :
This paper investigates orthogonal frequency-division multiple-access (OFDMA) resource-allocation schemes for two-hop relays in a home powerline communication (PLC) network. Unlike wireless channels, which can have noticeable path loss and shadow effects to bring a substantial relay gain, the powerline channel usually observes a quality of the relay channel on par with the direct link so that simple fixed relay configurations often lose performance instead of gaining any. Besides, the quasi-cyclostationary powerline channel benefits little from diversity combining, a scheme often found in cooperative wireless relay protocols to obtain performance improvements on fast fading channels. To address these special and challenging features of the powerline channel, home-PLC relay protocols that jointly allocate subchannels and power to the source and relay nodes are proposed. Simulation results show that significant improvements of data rates can be achieved by jointly optimizing the subchannel and power allocation of home-PLC relay networks.
Keywords :
OFDM modulation; carrier transmission on power lines; fading channels; multiuser channels; protocols; OFDMA resource-allocation; cooperative wireless relay protocol; fading channel; home powerline communication network; home-PLC relay protocol; multiuser joint subchannel; orthogonal frequency-division multiple-access; power resource-allocation; powerline relay network; quasicyclostationary powerline channel; relay channel; two-hop relays; Data communication; Diversity reception; HDTV; OFDM; Power cables; Power system relaying; Programmable control; Relays; Wireless application protocol; Wireless networks;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Communications, 2009. ICC '09. IEEE International Conference on
Conference_Location :
Dresden
ISSN :
1938-1883
Print_ISBN :
978-1-4244-3435-0
Electronic_ISBN :
1938-1883
Type :
conf
DOI :
10.1109/ICC.2009.5199210
Filename :
5199210
Link To Document :
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