Signal processing advances for 3G WCDMA: From rake receivers to blind techniques

As already deployed and proven technology, code-division multiple access has evolved to support competitive high-data-rate low-latency multimedia services over wireless cellular networks. In this article we introduce advanced signal processing techniques to enhance CDMA receiver performance further. In particular, we consider the possibility of optimal joint multiuser detection for long code WCDMA using fast inversion based on a state-space approach with reasonable complexity, and semi-blind channel estimation techniques to realize rate-efficient transmission for the latest 3G standards.

[1]  Sergio Verdu,et al.  Multiuser Detection , 1998 .

[2]  Lang Tong,et al.  A projection-based semi-blind channel estimation for long-code WCDMA , 2002, 2002 IEEE International Conference on Acoustics, Speech, and Signal Processing.

[3]  Fumiyuki Adachi,et al.  Channel Estimation Filter Using Time-Multiplexed Pilot Channel for Coherent RAKE Combining in DS-CDMA Mobile Radio , 1998 .

[4]  A. Viterbi.  CDMA: Principles of Spread Spectrum Communication , 1995 .

[5]  Andrew J. Viterbi,et al.  Very Low Rate Convolutional Codes for Maximum Theoretical Performance of Spread-Spectrum Multiple-Access Channels , 1990, IEEE J. Sel. Areas Commun..

[6]  P. Dewilde,et al.  Time-Varying Systems and Computations , 1998 .

[7]  Antti Toskala,et al.  Wcdma for Umts , 2002 .

[8]  Lang Tong,et al.  Blind decorrelating RAKE receivers for long-code WCDMA , 2003, IEEE Trans. Signal Process..

[9]  Zoran Zvonar,et al.  Multiuser detection for CDMA systems , 1995, IEEE Wirel. Commun..

[10]  Michail K. Tsatsanis,et al.  Blind channel estimation for long code multiuser CDMA systems , 2000, IEEE Trans. Signal Process..

[11]  Stefano Tomasin,et al.  Implementing interference cancellation to increase the EV-DO Rev A reverse link capacity , 2006, IEEE Communications Magazine.

[12]  Alle-Jan van der Veen,et al.  A Low-Complexity Blind Multiuser Receiver for Long-Code CDMA , 2004, EURASIP J. Wirel. Commun. Netw..

[13]  Antti Toskala,et al.  High-Speed Packet Access Evolution in 3GPP Release 7 [Topics in Radio Communications] , 2007, IEEE Communications Magazine.

[14]  Jilei Hou,et al.  Receiver Architectures and Design Tradeoffs for CDMA Interference Cancellation , 2006, 2006 Fortieth Asilomar Conference on Signals, Systems and Computers.

[15]  Sergio Verdú,et al.  Analysis of an Approximate Decorrelating Detector , 1998, Wirel. Pers. Commun..