Patent ID: 7801236
Filing Date: 2010-09-21
Classification: H04L

Abstract:
1. A radio communication system comprising a first radio station for dividing each codeword of codewords generated by encoding transmission information, into a plurality of communication units and transmitting the divided codewords by modulating these codewords in every communication unit, and a second radio station for coupling and decoding the signals obtained by demodulating the plurality of communication units, wherein the first and second radio stations have a common information of a first number of bits which is equal to maximum bits per symbol of the plurality of communication units, and an encoding type list including encoding types having different information bit lengths and equal code length after the encoding, to be used in the first radio station to encode the transmission information; and the first radio station generates the codewords by encoding the transmission information with one of the encoding types listed in the encoding type list, and divides each codeword into the plurality of communication units; modulates and transmits the plurality of communication units each with a modulation type in which the number of bits per symbol is a second number of bits which is equal to or less than the first number of bits, where at least two communication units of the plurality of communication units of a divided codeword, use a different number of bits per symbol of the transmission information from each other; the second radio station receives the plurality of communication units modulated by the first radio station; modulates respectively the plurality of communication units with a modulation type in which the number of bits per symbol is a third number of bits which is equal to or less than the first number of bits; combines and decodes the demodulated signals of the plurality of communication units with one or a plurality of encoding types among those listed in the encoding type list; and obtains a result of the decoding, as reception information, by an encoding type in which no error is detected in the result of decoding.