Error protection for over-the-air file transfer

Composed of a IS-99 standard communication system, a serial connection code is used to provide the air file of non-mistake. The serial connection code comprises Reed-Solomon to code (22), CRC block coding (32) and convolution coding (36). The electric socket, which the document the data frame, and realizes Reed-Solomon to code (22) to the data frame. Then, and CRC block coding to data of Reed-Solomon code. Time convolution coding to the CRC coded data (36). Time CRC block coding according to IS-99 the standard (32) and convolution coding. The Reed-Solomon code the joint of providing error correction improved, simultaneously and a IS-99 standard compatibility. The receiving part; and cleaning of the code is less than (n-k); and component two is suitable is less than (n-k /2), a time Reed-Solomon to decoding (104). Otherwise output end of the repeat request.