Patent ID: 9742524
Date: 2017-08-22
CPC Classifications: H04L

Claim:
1. A method for variable rate channel coding and modulation in a frequency domain of Orthogonal Frequency-Division Multiplexing (OFDM) wireless networks, the method comprising: partitioning, at a transmitter, user data into a plurality of codeblocks, each codeblock fitting input sizes accepted by Forward Error Correction (FEC); performing, at the transmitter, FEC on the codeblocks; applying, at the transmitter, a modulation and coding scheme (MCS) to each codeblock based on a channel frequency response received from a receiver of a channel over which the codeblock is to be transmitted, the MCS comprising a modulation order and a coding rate for the codeblock that best fits the channel frequency response of the channels; including, at the transmitter, information about the MCS applied to each codeblock within a part of physical resources devoted to the user data by reserving specific subcarriers and OFDM symbols for the information and inserting the information about the MCSs of the codeblocks into the reserved specific subcarriers and OFDM symbols; and mapping, at the transmitter, the modulated user data within the physical resources devoted to the user data and not reserved for the information about the MCSs, first in order of ascending OFDM symbols and then in order of ascending subcarriers.