New practical power and bit allocation algorithm in DMT systems

Junling Hu; Wenjiang Liu

doi:10.1117/12.445138

16 October 2001 New practical power and bit allocation algorithm in DMT systems

Junling Hu, Wenjiang Liu

Proceedings Volume 4583, Metro and Access Networks; (2001) https://doi.org/10.1117/12.445138
Event: Asia-Pacific Optical and Wireless Communications Conference and Exhibit, 2001, Beijing, China

Abstract

One of the advantages for Discrete Multitone(DMT) modulation systems compared to single carrier systems is that the power and bits may be allocated to each subchannel in some way for optimal performance. Some algorithms proposed before have high complexity and use flat power distribution which is not the optimal distribution. Based on the detail analysis of Water-Pouring theorem, a new practical algorithm is presented which match approximately matches the Water-Pouring distribution and can also the discrete bit loading problem. The simulation results show this algorithm has better performance and lower complexity.

Citation Download Citation

Junling Hu and Wenjiang Liu "New practical power and bit allocation algorithm in DMT systems", Proc. SPIE 4583, Metro and Access Networks, (16 October 2001); https://doi.org/10.1117/12.445138

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