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Optimal Bit Loading Algorithm for power-line communication systems subject to individual channel power constraints


Jiang, D, Optimal Bit Loading Algorithm for power-line communication systems subject to individual channel power constraints, Proceedings of ICCT 2006, 27-30 Nov. 2006, Guilin China, pp. 1358-1361. ISBN 1-4244-0801-6 (2006) [Refereed Conference Paper]

Copyright Statement

Copyright 2006 IEEE

DOI: doi:10.1109/ICCT.2006.341830


Multichannel modulation technique has been successfully applied to power-line communication networks because of its elegant water-filling algorithm for optimal bit-loading. This algorithm maximizes the total channel capacity of the communication system by appropriately matching the signal power to the channel noise level. This paper extends such an algorithm to the case where transmission power at different channels are constrained individually. Such constraints arise naturally in power-line communication systems. An algorithm is carefully developed for such a unfriendly communication environment. This algorithm is an iterative water-filling algorithm in nature, so that the simple and intuitive feature of the well-known water-filling algorithm can be preserved. The individual channel constraints are met using an iterative procedure, which guarantees the optimal solution can be reached within finite iterations. An illustrative system is simulated to demonstrate the efficiency of the proposed algorithm. Furthermore, the proposed algorithm is also well justified using theoretical results.

Item Details

Item Type:Refereed Conference Paper
Keywords:multichannel modulation, power-line communication (PLC), communication theory, OFDM.
Research Division:Engineering
Research Group:Communications engineering
Research Field:Communications engineering not elsewhere classified
Objective Division:Manufacturing
Objective Group:Computer, electronic and communication equipment
Objective Field:Network infrastructure equipment
UTAS Author:Jiang, D (Dr Danchi Jiang)
ID Code:41472
Year Published:2006
Deposited By:Engineering
Deposited On:2006-08-01
Last Modified:2012-12-11

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