Title :
Performance of adaptation algorithms in multipath channel equalization for CDMA systems
Author :
Vliese, A.F.C. ; Netto, S.L. ; de Campos, M.L.R. ; Diniz, P.S.R.
Author_Institution :
COPPE, Univ. Fed. do Rio de Janeiro, Brazil
Abstract :
In this work, the performance of several adaptation algorithms are investigated for the reception of CDMA signals. Two adaptive receiving frameworks are considered: the standard channel equalization with training sequence, and the fractionally-spaced equalization. Amongst the several widely known adaptation algorithms, we consider the LMS, the RLS, the binormalized data-reusing (BNDR), and the quasi-Newton (QN) algorithms. The overall system behavior is verified in a multiuser environment (15 users), and for several values of the signal-to-noise ratio (SNR). Algorithm performances are measured by the resulting receiving bit error-rate
Keywords :
adaptive equalisers; adaptive signal processing; code division multiple access; digital radio; error statistics; least mean squares methods; mobile radio; CDMA systems; LMS algorithm; RLS algorithm; SNR; adaptation algorithms performance; adaptive receiving frameworks; binormalized data-reusing algorithm; fractionally-spaced equalization; multipath channel equalization; multiuser environment; quasi-Newton algorithm; receiving BER; receiving bit error-rate; signal-to-noise ratio; standard channel equalization; system behavior verification; training sequence; Adaptive equalizers; Adaptive filters; Delay; Electromagnetic propagation; Least squares approximation; Multiaccess communication; Multipath channels; Resonance light scattering; Sampling methods; Signal to noise ratio;
Conference_Titel :
Electronics, Circuits and Systems, 1999. Proceedings of ICECS '99. The 6th IEEE International Conference on
Conference_Location :
Pafos
Print_ISBN :
0-7803-5682-9
DOI :
10.1109/ICECS.1999.814404
