Method and apparatus for transmitting data in a diversity communication system employing constellation rearrangement with qpsk modulation

摘要

A method of transmitting data from a transmitter to a receiver of a diversity (e.g. ARQ or reptetition coding) communication system comprising the step of encoding data received from a signal source to generate a Galois field (GF) symbols ( 101 ). The method further comprises the steps of modifying redundant GF symbols by an arithmetic operation ( 102 ) mapping the GF symbols using QPSK as modulation scheme ( 104 ) and transmitting the QPSK modulation symbols and the modified redundant symbols ( 105 ) to the receiver. Furthermore, the invention concerns a corresponding transmitter of a diversity communication system.