DocumentCode :
1357520
Title :
Optimal power distribution over pilot tones for multi-carrier communications over power lines
Author :
Bueche, David ; Corlay, Patrick ; Coudoux, François-Xavier ; Gazalet, Marc ; Slachciak, Marc
Author_Institution :
Dept. of Opto-Acousto-Electron., Univ. of Lille Nord de France, Valenciennes, France
Volume :
56
Issue :
3
fYear :
2010
Firstpage :
1794
Lastpage :
1800
Abstract :
In this paper, we propose a method for finding the optimal distribution of pilot power, which will optimize the performance of multi-carrier transmissions over power lines, using comb-type pilots. To find this optimal distribution, we took noise characteristics and channel estimation techniques based on pilot tones associated with interpolation techniques into account. We used two criteria: the classic Mean Square Error of channel estimation and an indicator of performance for multi-tones systems. With these criteria, we used the traditional Lagrange method to obtain different power distributions over pilot tones. In this paper, we show that minimizing the performance indicator is a good criterion, since it evolves as Bit Error Rate. We then present the optimal distribution of pilot power. Our results show that good performances can be achieved with a uniform distribution of pilot power, although the additive noise over pilots is highly colored.
Keywords :
carrier transmission on power lines; channel estimation; error statistics; interpolation; mean square error methods; Lagrange method; additive noise; bit error rate; channel estimation techniques; comb-type pilots; interpolation techniques; mean square error; multicarrier communications; multicarrier transmissions; multitones systems; noise characteristics; optimal power distribution; performance indicator; pilot tones; power distributions; power lines; Channel estimation; Interpolation; Kernel; Mean square error methods; Noise; Power distribution; Tin; pilot tones, pilot power, channel estimation, interpolation techniques, multi-carrier, power line;
fLanguage :
English
Journal_Title :
Consumer Electronics, IEEE Transactions on
Publisher :
ieee
ISSN :
0098-3063
Type :
jour
DOI :
10.1109/TCE.2010.5606328
Filename :
5606328
Link To Document :
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