WIRELESS COMMUNICATION DEVICE, WIRELESS COMMUNICATION METHOD AND WIRELESS COMMUNICATION SYSTEM

摘要

It is an object to provide a wireless communication device, a wireless communication method and a wireless communication system configured to improve receiving reliability of predetermined bits such as highly important bits. A code length L is determined by a designated modulation system, a coding rate and a bit length of S2. A relay station determines a coding rate of S1 in the light of the code length L. In the case of 16QAM, since bits involving a quadrant judgment are 1/2 of the entire bits, let L/2 be the code length of S1. Thus, the coding rate of S1 is 2(LS1)/ L where the bit length of S1 is LS1. In this example, S1 is coded to be S1+P1 and S2 is S2+P4. P1 denotes a parity bit of S1 while P4 denotes a parity bit of S2. The relay station changes a bit arrangement so that each bit of code words (S1+P1) of S1 comes in a position of the quadrant judgment of all 16QAM constellation.