Adaptive multiuser receiver with joint channel and time delay estimation of CDMA signals based on the square-root unscented filter

Authors:
Jang-Sub Kim;Dong-Ryeol Shin;Erchin Serpedin
Affiliations:
Department of Electrical and Computer Engineering, Texas A&M University, College Station, TX 77843-3128, USA;Department of Electrical and Computer Engineering, Texas A&M University, College Station, TX 77843-3128, USA;Department of Electrical and Computer Engineering, Texas A&M University, College Station, TX 77843-3128, USA
Venue:
Digital Signal Processing
Year:
2009

Citing 9
Cited 2

Numerical recipes in C (2nd ed.): the art of scientific computing

Numerical recipes in C (2nd ed.): the art of scientific computing
Wireless information networks

Wireless information networks
Microwave Mobile Communications

Microwave Mobile Communications
Parallel Interference Cancellation in Multiuser CDMA ChannelEstimation

Wireless Personal Communications: An International Journal
Particle filtering for joint symbol and code delay estimation in DS spread spectrum systems in multipath environment

EURASIP Journal on Applied Signal Processing
Blind adaptive interference suppression for the near-far resistantacquisition and demodulation of direct-sequence CDMA signals

IEEE Transactions on Signal Processing
A sequential Monte Carlo filter for joint linear/nonlinear state estimation with application to DS-CDMA

IEEE Transactions on Signal Processing
Adaptive joint detection and decoding in flat-fading channels via mixture Kalman filtering

IEEE Transactions on Information Theory
An adaptive multiuser detector with joint amplitude and delay estimation

IEEE Journal on Selected Areas in Communications

Square-root unscented Kalman filtering of a term structure model of interest rates

IMCAS'10 Proceedings of the 9th WSEAS international conference on Instrumentation, measurement, circuits and systems
Non-linear filtering in the estimation of a term structure model of interest rates

WSEAS TRANSACTIONS on SYSTEMS

Quantified Score

Hi-index	0.00

Visualization

Abstract

The paper discusses an adaptive multiuser receiver for CDMA systems in which the scaled unscented filter (SUF) and the square root unscented filter (SURF) are used for joint estimation and tracking of the code delays and multipath coefficients of the received CDMA signals. The proposed channel estimators are more near-far resistant than the conventional extended Kalman filter (EKF) and present lower complexity than the conventional particle filter (PF) based methods. To present meaningful performance measures, the modified Cramer-Rao lower bound (CRLB) and computational complexity metrics are derived for the proposed and existing channel estimators. Computer simulation results demonstrate the superior performance of the proposed channel estimators. The proposed estimators are also shown to exhibit lower complexity relative to the PF.