Title :
Performance analysis of an adaptive antenna array for GSM/UMTS
Author :
Ansbro, A.P. ; Drakul, S.L. ; Fanigliulo, A. ; Fontana, G.
Author_Institution :
CSELT, Torino, Italy
Abstract :
We propose an adaptive antenna array for GSM/UMTS systems. To improve the channel estimation operation at the receiver and to increase the convergence speed of the LMS and RLS algorithms we perform an initial channel estimate by using the modified autocorrelation and crosscorrelation functions of the received baseband training sequences. For real time reception of the GSM signals the effects of this technique on the overall BER performance are investigated. Co-channel interference (CCI) and intersymbol interference (ISI) are jointly reduced by optimizing the receiver parameters. Simulation results show that the proposed approach leads to good performance of the system even at low carrier-to-interference ratio
Keywords :
adaptive antenna arrays; adaptive signal processing; array signal processing; cellular radio; cochannel interference; convergence of numerical methods; correlation methods; direction-of-arrival estimation; error statistics; interference suppression; intersymbol interference; least mean squares methods; radio receivers; recursive estimation; BER performance; CCI; GSM signals; GSM/UMTS; ISI; LMS; LMS algorithm; RLS; RLS algorithm; Viterbi algorithm; adaptive algorithms; adaptive antenna array; channel estimation; co-channel interference; convergence speed; intersymbol interference; least mean squares; low carrier-to-interference ratio; modified autocorrelation function; modified crosscorrelation function; real time reception; received baseband training sequences; receiver; receiver parameters; recursive least squares; simulation results; time-variant channel; 3G mobile communication; Adaptive arrays; Antenna arrays; Channel estimation; Convergence; GSM; Intersymbol interference; Least squares approximation; Performance analysis; Resonance light scattering;
Conference_Titel :
Vehicular Technology Conference, 1998. VTC 98. 48th IEEE
Conference_Location :
Ottawa, Ont.
Print_ISBN :
0-7803-4320-4
DOI :
10.1109/VETEC.1998.686424
