Patent ID: 7492701
Filing Date: 2009-02-17
Classification: H04L,H04W

Abstract:
1. A method of controlling adaptive modulation and coding (AMC) in an orthogonal frequency division multiplexing (OFDM) communication system in which an entire frequency band is divided into a plurality of sub-carrier bands, comprising the steps of: (1) calculating a power and a number of transmission bits for each of the sub-carriers in a predetermined method for each coding method available in the OFDM communication system; (2) calculating a data rate for each coding method based on the number of transmission bits and the power for each sub-carrier; (3) determining a coding method having a highest of the calculated data rates for the OFDM communication system; and (4) determining a modulation method for the OFDM communication system according to a number of transmission bits in the determined coding method; wherein the step of calculating the number of transmission bits and the power for each sub-carrier for each of the coding methods is performed by where i is an index of a coding method available in the OFDM communication system, R(C