DocumentCode :
3418282
Title :
Performance analysis of a cross-layer collaborative beamforming approach in the presence of channel and phase errors
Author :
Dong, Lun ; Petropulu, Athina P. ; Poor, H. Vincent
Author_Institution :
Dept. of Electr. & Comput. Eng., Drexel Univ., Philadelphia, PA
fYear :
2008
fDate :
March 31 2008-April 4 2008
Firstpage :
3233
Lastpage :
3236
Abstract :
Collaborative beamforming enables nodes in a wireless network to transmit a common message over long distances in an energy efficient fashion. However, the process of making available the same message to all collaborating nodes introduces delays. The authors recently proposed a MAC-PHY cross-layer scheme that enables collaborative beamforming with significantly reduced collaboration overhead. The method requires knowledge of node locations and internode channel coefficients. In this paper, the performance of that approach is studied analytically in terms of average beampattern and symbol error probability (SEP) under realistic conditions, i.e., when imperfect channel estimates are used and when there are phase errors in the contributions of the collaborating nodes at the receiver.
Keywords :
array signal processing; channel estimation; error statistics; wireless channels; average beampattern; channel estimation; channel-phase errors; cross-layer collaborative beamforming approach; cross-layer scheme; internode channel coefficients; message transmission; node locations; phase errors; symbol error probability; Array signal processing; Collaboration; Collaborative work; Computer errors; Computer networks; Energy efficiency; Intelligent networks; Performance analysis; Power engineering and energy; Wireless networks; collaborative beamforming; cross-layer approach for wireless networks; imperfect conditions;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Acoustics, Speech and Signal Processing, 2008. ICASSP 2008. IEEE International Conference on
Conference_Location :
Las Vegas, NV
ISSN :
1520-6149
Print_ISBN :
978-1-4244-1483-3
Electronic_ISBN :
1520-6149
Type :
conf
DOI :
10.1109/ICASSP.2008.4518339
Filename :
4518339
Link To Document :
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