KEYWORDS: Signal to noise ratio, Algorithms, Interference (communication), Modulation, Computer simulations, Data communications, Quadrature amplitude modulation, Transceivers, Data transmission, Electronics
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.
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