Journal of Beijing University of Posts and Telecommunications

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JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2016, Vol. 39 ›› Issue (1): 79-82.doi: 10.13190/j.jbupt.2016.01.014

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Construction of High Rate Turbo-OVCDM by Superposition Coding

ZHOU Su-hua1, ZHOU Jing2, ZHANG Ru3   

  1. 1. Century College, Beijing University of Posts and Telecommunications, Beijing 102102, China;
    2. Department of Electronic Engineering and Information Science, University of Science and Technology China, Hefei 230027, China;
    3. School of Ethnic Minority Education, Beijing University of Posts and Telecommunications, Beijing 102209, China
  • Received:2015-01-15 Online:2016-02-28 Published:2016-02-28

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Abstract:

The decoding complexity of traditional type of Turbo-overlapped code division multiplexing (OVCDM) increases exponentially with the code rate. To solve this problem, a new Turbo-OVCDM coding and decoding approach was proposed. The maximum sum-rate achieving strategy in Gaussian multiple access channels was used to construct point-to-point coding scheme. Superposition of two or more Turbo-OVCDM codes and serial interference cancellation were applied for coding and decoding respectively. Numerical results demonstrate the feasibility of the proposed approach.

Key words: overlapped code division multiplexing, serial interference cancellation, superposition coding, Gaussian multiple access channel

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