Data encoding method and apparatus

摘要

The invention provides a method of puncturing an encoded data bit stream, and an equivalent apparatus. The method applies one or more puncturing patterns to puncture the encoded data bit stream to reduce the number of transmitted bits. In one aspect there is provided a method of puncturing an encoded data bit-stream in a wireless transmitter, the encoded data bit-stream including one or more information bits, the method including receiving the encoded data bit-stream, puncturing a first group of encoded data bits and a second remaining group of encoded data bits in the encoded data bit stream using a first puncturing code rate and a second puncturing code rate respectively, wherein the first puncturing code rate is predefined, and the second puncturing code rate is determined based on the number of data bits in the second remaining group of encoded data bits.

主权项

1. A method of puncturing an encoded data bit-stream in a wireless transmitter, the encoded data bit-stream including one or more information bits, the method comprising:
receiving the encoded data bit-stream, determining the number of data symbols required to transmit said one or more information bits based on a number of factors including the number of bits in the encoded data bit stream and a first puncturing code rate; determining whether a total number of punctured encoded bits to be transmitted in said determined number of data symbols is a multiple of a predefined punctured block size, wherein said predefined punctured block size is the number bits in a block of punctured encoded bits; determining a second puncturing code rate for one or more remaining data bits of said total number of punctured encoded bits to be transmitted in said determined number of data symbols if said determined total number of punctured encoded bits to be transmitted in said determined number of data symbols is not a multiple of said predefined punctured block size; and puncturing a first group of encoded data bits and a second remaining group of encoded data bits in said encoded data bit stream using said first puncturing code and said second puncturing code respectively.