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Coding and Decoding for Code Division Multiple User Communication Systems

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1 Author(s)
Healy, Timothy J. ; Univ. of Santa Clara, Santa Clara, CA

A new algorithm is introduced which decodes code division multiple user communication signals. The algorithm makes use of the distinctive form or pattern of each signal to separate it from the composite signal created by the multiple users. Although the algorithm is presented in terms of frequency-hopped signals, the actual transmitter modulator can use any of the existing digital modulation techniques. The algorithm is applicable to error-free codes or to codes where controlled interference is permitted. It can be used when block synchronization is assumed, and in some cases when it is not. The paper also discusses briefly some of the codes which can be used in connection with the algorithm, and relates the algorithm to past studies which use other approaches to the same problem.

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Communications, IEEE Transactions on  (Volume:33 ,  Issue: 4 )