Title :
Diversity in mobile communications for blind detection of block-coded modulations
Author :
Vázquez, Gregori ; Rey, Francesc ; Lamarca, Meritxell ; Fonollosa, Javier R.
Author_Institution :
Dept. of Signal Theory & Commun., Polytech. Univ. of Catalonia, Spain
Abstract :
Spatial, temporal, and frequency diversity structures are analyzed to address the blind equalization problem in the presence of time-variant frequency selective channels. The aim of the paper is to present equalization schemes useful in front of fast changing channel responses. The best solution is a deterministic blind criterion that allows direct channel equalization and symbol detection. The main contribution of this paper is to present deterministic blind equalization schemes in CDMA systems (frequency diversity) to reduce the impact of the time-variant frequency selective channel
Keywords :
blind equalisers; block codes; code division multiple access; diversity reception; land mobile radio; modulation coding; multipath channels; multiuser channels; signal detection; spread spectrum communication; time-varying channels; DS-CDMA systems; blind detection; blind equalization; block codes; block-coded modulations; channel response; deterministic blind criterion; deterministic blind equalization; direct channel equalization; frequency diversity; mobile communications; multipath channels; spatial diversity; spread spectrum diversity; symbol detection; temporal diversity; time-variant frequency selective channels; Attenuation; Blind equalizers; Fading; Frequency diversity; Intersymbol interference; Mobile communication; Multiaccess communication; Signal analysis; Spread spectrum communication; Stochastic processes;
Conference_Titel :
Vehicular Technology Conference, 1999 IEEE 49th
Conference_Location :
Houston, TX
Print_ISBN :
0-7803-5565-2
DOI :
10.1109/VETEC.1999.780518
