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A new computationally algorithm for efficient discrete bit-loading DMT applications
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DOI：10.1109/TCOMM.2005.847141.png)
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Abstract
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This letter presents a new bit-loading algorithm for discrete multitone systems that converges faster to the same bit allocation as the optimal discrete bit-filling and bit-removal methods. The algorithm exploits the differences between the subchannel gain-to-noise ratios in order to determine an initial bit allocation and then performs a multiple-bits loading procedure for achieving the requested target rate. Numerical results using asymmetric digital subscriber test loops demonstrate the computational efficiency of the proposed algorithm.
Keywords:
bit loading
digital subscriber line (DSL)
discrete multitone (DMT)
multicarrier communications
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