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Robust Constant Modulus Algorithms
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Book Chapter
Robust Constant Modulus Algorithms
2018
Overview
In addition to blind equalization and blind beamforming, the constant modulus algorithm (CMA) can be used also for code acquisition in the context of DS‐CDMA systems. This chapter presents an alternative approach to robust adaptive blind multiuser detection. This is based on the linearly constrained CMA (LCCMA) and with a quadratic inequality (QI) constraint on the weight vector norm. The chapter provides the robust LCCMA detector design and its adaptive implementation of robust LCCMA. It outlines the block Shanno CMA (BSCMA) algorithm and also introduces the robust BSCMA with the QI constrained. The LCCMA and BSCMA algorithms are used to update the adaptive vector of the partition linear interference canceller (PLIC) structure. The PLIC structure with multiple constraints is employed to identify the multiple access interference (MAI) and hence help prevent interference capture. The chapter describes block processing and adaptive implementation of robust BSCMA. Finally, the chapter also presents computer simulations and performance comparison.
Publisher
John Wiley & Sons, Incorporated,John Wiley & Sons, Ltd
Subject
ISBN
1118938240, 9781118938249
