DocumentCode :
1751028
Title :
Shift invariance algorithms for the angle/delay estimation of multipath space-time channel
Author :
Picheral, José ; Spagnolini, Umberto
Author_Institution :
Dipt. di Elettronica e Inf., Politecnico di Milano, Italy
Volume :
1
fYear :
2001
fDate :
2001
Firstpage :
83
Abstract :
In time-division CDMA systems the angle/delay of the multipath propagation channel can be estimated jointly by exploiting the invariance of angles/delays across multiple slots regardless of fast-variation in faded amplitudes. The joint angle/delay estimation (JADE) is reduced to the estimation of frequency of 2D sinusoids, here the shift-invariance method (2D-ESPRIT) is used. Application of JADE to 3rd generation mobile communication system (TDD-UTRA standard) and to realistic propagation environments demonstrates the advantage of the proposed method. Linear multiuser detection that exploits angle/delay estimates shows a meaningful improvement (approx. 2÷4 dB in signal to noise ratio) with respect to the conventional least square estimate
Keywords :
array signal processing; code division multiple access; delay estimation; direction-of-arrival estimation; error statistics; frequency estimation; land mobile radio; multipath channels; multiuser channels; signal detection; telecommunication standards; time-varying channels; 2D sinusoid frequency estimation; 2D-ESPRIT; 3G mobile communication system; BER; JADE; SNR; TDD-UTRA standard; angle/delay estimation; antenna array; faded amplitude variation; joint angle/delay estimation; least square estimate; linear multiuser detection; multipath propagation channel; multipath space-time channel; propagation environments; shift invariance algorithms; shift-invariance method; signal to noise ratio; third generation mobile communication system; time-division CDMA systems; time-varying multipaths; Amplitude estimation; Communication standards; Delay estimation; Frequency estimation; Least squares approximation; Mobile communication; Multiaccess communication; Multiuser detection; Propagation delay; Signal to noise ratio;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Vehicular Technology Conference, 2001. VTC 2001 Spring. IEEE VTS 53rd
Conference_Location :
Rhodes
ISSN :
1090-3038
Print_ISBN :
0-7803-6728-6
Type :
conf
DOI :
10.1109/VETECS.2001.944808
Filename :
944808
Link To Document :
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