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|1. (WO2018127041) RATE MATCHING METHOD, CODING APPARATUS, AND COMMUNICATION APPARATUS|
|Applicants:||HUAWEI TECHNOLOGIES CO., LTD.
|Title:||RATE MATCHING METHOD, CODING APPARATUS, AND COMMUNICATION APPARATUS|
Provided in the embodiments of the present application are a rate matching method, a coding and decoding apparatus, and a communication apparatus. The method comprises: acquiring an information bit sequence and a target code length M of a polar code; when the target code length M meets a preset condition, using a polar code of a first parent code length N1 to encode the information bit sequence, and outputting a first coded bit sequence, N1 being less than or equal to M, and N1 being an integer power of 2; repeating at least some of the bits of the first coded bit sequence to obtain a first target polar code of length M; when the target code length M does not meet the preset condition, using a polar code of a second parent code length N2 to encode the information bit sequence, and outputting a second coded bit sequence, N2 being greater than or equal to M, and N2 being an integer power of 2; shortening or puncturing the second coded sequence to obtain a second target polar code of length M. When coding gain and loss are low, using a rate matching solution based on repetition reduces the complexity of encoding and decoding.