| 摘要 |
PROBLEM TO BE SOLVED: To improve broad band code division multiple address communication by using turbo coupling multiple code multiplex data transmission for communication, without puncturing so as to improve transmission power. SOLUTION: This data transmission circuit is provided with an encoder circuit 602 that is coupled with a line to receive a data stream, and the encoder circuit 602 generate a 1st coded data stream and a 2nd coded data stream from the received data stream. A 1st spread circuit 606 is coupled with the encoder circuit 602 for receiving the data stream and the 1st coded data stream and generates a 1st modulated data stream, in response to a 1st code CA. A 2nd spread circuit 614 is coupled with the encoder circuit 602 to receive the data stream and the 2nd coded data stream and generates a 2nd modulated data stream, in response to a 2nd code CB. |
