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Optimum bit allocation algorithm for DMT-based systems under minimum transmitted power constraint

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1 Author(s)
S. Kourtis ; Motorola, Aylesbury, UK

An algorithm for allocating bits to several carriers of a discrete multitone (DMT) symbol is proposed. The target of the algorithm is to assign the required bits (supported service) among the carriers so that the transmitted power is kept to a minimum. Ultimately, this algorithm is a transmitted power back-off algorithm which enables the system to operate at the minimum required power, resulting in the minimisation of the crosstalk interference to other systems located in the same binder group. Even though this algorithm was originally designed according the very high speed digital subscriber line system specifications, it can equally be used in every DMT-based digital subscriber line system such as asymmetrical digital subscriber line systems

Published in:

Electronics Letters  (Volume:35 ,  Issue: 25 )