Patent Document ID: 20040010743
Application ID: 10316449
Patent Flag: 0

Claim One:
1. A turbo encoded hybrid Automatic Repeat reQuest (ARQ) system comprising: a transmitter that, by equivalently Cyclic Redundancy Check (CRC) encoding inputted data bits using an equivalent CRC generator polynomial, performs CRC encoding and pre-termination simultaneously, multiplexes turbo encoded bits according to equivalent CRC encoded output bits, maps the multiplexed output bits to the channel symbol by bit interleaving, and transmits a channel symbol in packet form to a receiver; and the receiver receives the channel symbol transmitted in the packet form from the transmitter, computes a bit metric for bits that constitute an equivalent CRC encoded and turbo encoded new message symbol, de-multiplexes the received channel symbol by bit de-interleaving, turbo decodes the de-multiplexed new message symbol iteratively by using a computed bit metric, detects whether there are any errors included in the packet by CRC decoding a forward error correction processed frame, which has passed through the iterative turbo decoding, and transmits a signal related to a request for retransmission of a packet in accordance with an existence of errors.