On Blind Timing Acquisition and Channel Estimation for Wideband Multiuser DS-CDMA Systems
Journal of VLSI Signal Processing Systems
Efficient VLSI Architectures for Multiuser Channel Estimation in Wireless Base-Station Receivers
Journal of VLSI Signal Processing Systems
Multichannel Estimation and Equalization Algorithm for Asynchronous Uplink DS/CDMA
Wireless Personal Communications: An International Journal
Near-far resistant detection of CDMA signals in dispersive channels
Signal Processing
Reduced-rank RAKE receivers for asynchronous CDMA signals
Signal Processing
Blind multiuser detection for long-code CDMA systems with transmission-induced cyclostationarity
EURASIP Journal on Wireless Communications and Networking - Special issue on advanced signal processing algorithms for wireless communications
Intersymbol decorrelating detector for asynchronous CDMA networks with multipath
EURASIP Journal on Wireless Communications and Networking
Channel Estimation by Using Short Training Sequences in CDMA Systems
Wireless Personal Communications: An International Journal
A robust parametric technique for multipath channel estimation in the uplink of a DS-CDMA system
EURASIP Journal on Wireless Communications and Networking
Blind identification of convolutive MIMO systems with 3 sources and 2 sensors
EURASIP Journal on Applied Signal Processing
EURASIP Journal on Applied Signal Processing
Further study on MOE-based multiuser detection in unknown multipath
EURASIP Journal on Applied Signal Processing
Multiuser channel estimation from higher-order statistical matrix pencil
EURASIP Journal on Applied Signal Processing
Blind synchronization in asynchronous UWB networks based on the transmit-reference scheme
EURASIP Journal on Wireless Communications and Networking
EURASIP Journal on Applied Signal Processing
Blind multiuser detection by kurtosis maximization for asynchronous multirate DS/CDMA systems
EURASIP Journal on Applied Signal Processing
EURASIP Journal on Applied Signal Processing
A robust parametric technique for multipath channel estimation in the uplink of a DS-CDMA system
EURASIP Journal on Wireless Communications and Networking
Adaptive Multiuser Channel Estimation using Reduced Kalman/LMS Algorithm
Wireless Personal Communications: An International Journal
Computers and Electrical Engineering
Wireless Personal Communications: An International Journal
Communications over the best singular mode of a reciprocal MIMO channel
IEEE Transactions on Communications
A two-stage Independent Component Analysis-based method for blind detection in CDMA systems
Digital Signal Processing
Wireless Personal Communications: An International Journal
Wireless Personal Communications: An International Journal
Hi-index | 35.68 |
In asynchronous code division multiple access (A-CDMA) systems transmitting over multipath channels, both intersymbol interference (ISI) as a result of interchip interference (ICI) and multiple access interference (MAI) cannot be easily eliminated. Although it is possible to design multiuser detectors that suppress MAI and ISI, these detectors often require explicit knowledge of at least the desired users' signature waveform. Recently, Liu and Xu (see Proc. 29th Asilomar Conf. Signals, Systems and Computers, 1996) introduced a blind estimation algorithm for synchronous CDMA (S-CDMA) systems to estimate the multiuser channels. However, this algorithm cannot be directly applied to an asynchronous CDMA (A-CDMA) system. In this paper, we study a similar blind estimation scheme that provides estimates of the multiuser channels by exploiting the structure information of the data output and the users' delays. In particular, we show that the subspace of the data matrix contains sufficient information for unique determination of channels and, hence, the signature waveforms. By utilizing antenna arrays, we extended our approach to overloaded systems, where the number of users may exceed the spreading factor