Title :
Semi-blind space-time chip equalizer receivers for WCDMA forward link with code-multiplexed pilot
Author :
Petré, Frederik ; Leus, Geert ; Engels, Marc ; Moonen, Marc ; De Man, Hugo
Author_Institution :
IMEC, Leuven, Belgium
Abstract :
In the forward link of WCDMA systems, the multipath propagation channel destroys the orthogonality of the spreading codes and therefore causes multi-user interference (MUI). We propose new training-based and semi-blind space-time chip equalizer receivers for the forward link of WCDMA systems with a continuous code-multiplexed pilot. Both least-squares (LS) algorithms for block processing and recursive least-squares (RLS) algorithms for adaptive processing are derived. The proposed receivers can track fast fading multipath channels and outperform the RAKE receiver with perfect channel knowledge
Keywords :
adaptive equalisers; blind equalisers; code division multiple access; fading channels; least squares approximations; multipath channels; radio links; recursive estimation; spread spectrum communication; LS algorithms; MUI; RLS algorithms; WCDMA; adaptive processing; block processing; continuous code-multiplexed pilot; fast fading channels; forward link; least-squares algorithms; multi-user interference; multipath propagation channel; recursive least-squares algorithms; semi-blind equalizer receivers; space-time chip equalizer receivers; spreading codes; tracking; training-based equalizer receivers; Data models; Equalizers; Fading; Finite impulse response filter; Interference; Least squares methods; Multiaccess communication; Multipath channels; Receiving antennas; Resonance light scattering;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 2001. Proceedings. (ICASSP '01). 2001 IEEE International Conference on
Conference_Location :
Salt Lake City, UT
Print_ISBN :
0-7803-7041-4
DOI :
10.1109/ICASSP.2001.940445
