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Multiuser detectors with single-user parameter estimation on quasi-synchronous CDMA channels

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2 Author(s)
Mailaender, L. ; Bell Labs., Lucent Technol., Holmdel, NJ, USA ; Iltis, R.A.

We present simulated error rate and code delay/amplitude tracking performance for two recently developed detectors: the adaptive whitened matched filter, and the quasi-synchronous decorrelator. Rapid convergence (within 50 symbols) of the estimated amplitude and delay of the desired user is demonstrated based on an approximate joint maximum likelihood approach. The adaptive whitened matched filter exhibits better bit error rate performance than the decorrelator, but requires a complex eigenanalysis stage

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Communications, IEEE Transactions on  (Volume:48 ,  Issue: 2 )