Transmission diversity using single puncturing pattern

摘要

A communication system and a method for transmitting a signal in the communication system are provided, a pair of turbo codes having the same performance are generated from one information bit sequence by changing the output order of the turbo code generator. The encoded bit sequences are punctured using one optimal puncturing pattern and the resultant sequences have the same error correcting performance and can be used when transmit diversity method or H-ARQ method is used to enhance the performance of the system. When differently encoded bit sequences are transmitted with transmit diversity, the receiver can get code combining gain as well as maximal ratio combining gain by combining the differently encoded bit sequences. Like the transmit diversity method, H-ARQ method can obtain code combining gain as well as maximal ratio combining gain by transmitting a different signal for the "Retransmit" signal that has different parity bits from the "New" signal and combining the sequences at the receiver.