Adaptive blind retrieval techniques for multiuser DS-CDMA signals |
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Authors: | Lambotharan S. Chambers J.A. Constantinides A.G. |
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Affiliation: | Dept. of Electr. Eng., Imperial Coll. of Sci., Technol. & Med., London; |
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Abstract: | In a multiuser direct sequence code division multiple access system, retrieval of the transmitted signals with a conventional receiver is difficult when there is chip asynchronism, multipath propagation and the associated near-far problem. It is shown that despite these problems, an adaptive linear receiver based on a mixed cross-correlation and constant modulus algorithm has the potential to retrieve all users simultaneously. Moreover, for the assumed transmission model, a necessary condition for global convergence of the proposed algorithm is also provided |
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