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Minimum Correlation Spreading Codes Design

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Abstract

Inter symbol interference (ISI) and multiple access interference (MAI) appear in code division multiple access systems when the spreading codes are not orthogonal. ISI and MAI are function of the auto and cross correlation values of the spreading codes. In this paper we investigate the tradeoff between auto and cross correlation properties; we formulate the optimum solution for both cases, transform the problem from multi-criterion to single criterion optimization problem, then formulate the dual problem, and find the optimal tradeoff solution where minimum auto and cross correlation values are attained. Minimum Correlation codes show a great enhancement in performance compared to Hadamard codes.

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Authors and Affiliations

  1. Department of Electrical and Computer Engineering, Texas A&M University, College Station, TX, 77843, USA

    Abdallah K. Farraj

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  1. Abdallah K. Farraj
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Correspondence to Abdallah K. Farraj.

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Farraj, A.K. Minimum Correlation Spreading Codes Design. Wireless Pers Commun 55, 395–405 (2010). https://doi.org/10.1007/s11277-009-9806-0

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  • DOI: https://doi.org/10.1007/s11277-009-9806-0

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