Blind adaptive reduced-rank estimation based on the constant modulus criterion and diversity combined decimation and interpolation

This work proposes a low-complexity blind adaptive reduced-rank method (BARC) for symbol estimation using an adaptive decimation and interpolation scheme based on diversity-combining and the constant modulus criterion for interference suppression. The proposed approach employs an iterative procedure...

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Bibliographic Details
Published in:2008 IEEE International Conference on Acoustics, Speech and Signal Processing pp. 2813 - 2816
Main Authors: de Lamare, R.C., Sampaio-Neto, R., Haardt, M.
Format: Conference Proceeding
Language:English
Published: IEEE 01.03.2008
Subjects:
Adaptive algorithm
Blind adaptive estimation
Interference constraints
Interference suppression
Interpolation
Iterative methods
Multiaccess communication
Parameter estimation
Performance gain
reduced-rank techniques
Stochastic processes
ISBN:9781424414833, 1424414830
ISSN:1520-6149
Online Access:Get full text
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Summary:This work proposes a low-complexity blind adaptive reduced-rank method (BARC) for symbol estimation using an adaptive decimation and interpolation scheme based on diversity-combining and the constant modulus criterion for interference suppression. The proposed approach employs an iterative procedure to jointly optimize the interpolation, decimation and estimation tasks for blind reduced-rank parameter estimation. We describe joint iterative estimators based on the constrained constant modulus (CCM) criterion, introduce alternative decimation structures, including the optimal decimation scheme, and develop low-complexity stochastic gradient adaptive algorithms for the proposed structure. Simulations for a CDMA interference suppression application show an excellent performance and substantial gains over prior art.
ISBN:9781424414833
1424414830
ISSN:1520-6149
DOI:10.1109/ICASSP.2008.4518234