Patent ID: 6012160
Filing Date: 2000-01-04
Classification: H03M,H04L

Abstract:
An apparatus for coding information bits for transmission, comprising:a separator for sorting the information bits into a first group of information bits and a second group of information bits;a first convolutional encoder for coding the first group of information bits to produce a third group of coded information bits;a second convolution encoder for coding the second group of information bits to produce a fourth group of coded information bits, wherein a ratio of the third group of information bits to the first group of information bits is greater than a ratio of the fourth group of information bits to the second group of information bits;scrambling circuitry for scrambling the fourth group of coded information bits in dependence on the first group of information bits to produce a fifth group of scrambled, coded information bits; anda transmitter for transmitting each of the fifth group of scrambled, coded information bits and each of the third group of coded information bits in a predetermined transmission sequence.