Apparatus and method for controlling adaptive modulation and...

Multiplex communications – Generalized orthogonal or special mathematical techniques – Particular set of orthogonal functions

Reexamination Certificate

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C455S023000

Reexamination Certificate

active

07492701

ABSTRACT:
A method and apparatus for controlling AMC in an OFDM communication system in which an entire frequency band is divided into a plurality of sub-carrier bands. In the AMC controlling method, power and a number of transmission bits are calculated for each of the sub-carriers in a predetermined method for each of coding methods available in the OFDM communication system. A data rate for each of the coding methods is calculated based on the number of transmission bits and the power for each sub-carrier. A coding method having a highest of the calculated data rates is selected and a modulation method is determined according to a number of transmission bits in the determined coding method.

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Li Zhen, et al., “A Modified Sub-Optimum Adaptive Bit and Power Allocation Algorithm in Wideband OFDM System”, Beijing University of Posts and Telecommunications, May 2003.

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