Blind Adaptive Linear Parallel Interference Canceller for DS-CDMA in Frequency Selective Fading Channels

In this work we propose an adaptive blind linear parallel interference canceller (PIC) for direct-sequence code division multiple access (DS-CDMA) systems in frequency selective fading channels. A code-constrained constant modulus (CCM) design criterion based on constrained optimization techniques i...

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Bibliographic Details
Published in2006 IEEE Ninth International Symposium on Spread Spectrum Techniques and Applications pp. 253 - 257
Main Authors Vinhoza, T.T.V., de Lamare, R.C., Sampaio-Neto, R.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.08.2006
Subjects
Algorithm design and analysis
Constraint optimization
Design optimization
Detectors
Fading
Frequency conversion
Interference cancellation
Interference constraints
Multiaccess communication
Stochastic processes
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Summary:In this work we propose an adaptive blind linear parallel interference canceller (PIC) for direct-sequence code division multiple access (DS-CDMA) systems in frequency selective fading channels. A code-constrained constant modulus (CCM) design criterion based on constrained optimization techniques is proposed for PIC detectors in scenarios subject to multipath, and computationally efficient blind adaptive stochastic gradient (SG) and recursive least squares (RLS) algorithms are described for estimating both the receiver and channel parameters. Simulation results for an uplink scenario assess the algorithms, the proposed blind adaptive PIC detectors against existing receivers and evaluate the effects of error propagation of the new cancellation techniques
ISBN:0780397797
9780780397798
ISSN:1943-7439
DOI:10.1109/ISSSTA.2006.311773