DocumentCode :
1698755
Title :
A novel multitarget adaptive array algorithm for wireless CDMA systems
Author :
de Matos, A.R.R. ; de Mendonca, L.M. ; D´Assuncao, A.G.
Author_Institution :
Departamento de Engenharia Electrica, Univ. Fed. do Rio Grande do Norte, Natal, Brazil
Volume :
4
fYear :
2001
Firstpage :
10
Abstract :
In CDMA systems several users occupy the same frequency band. An adaptive array utilized in such an environment must be able to separate and extract each user´s signal simultaneously. Thus in order to avoid bandwidth overhead, it is preferred that the algorithm used to adapt the weights work without a training sequence, i.e., the algorithm should be blind. LS-DRMTA is such a kind algorithm. We propose a modification in LS-DRMTA in a way that the weight generated by the new algorithm multipath least squares despread respread multitarget array (MLS-DRMTA) can produce a radiation pattern with beams directed toward the several desired signal multipaths.
Keywords :
adaptive antenna arrays; array signal processing; code division multiple access; direction-of-arrival estimation; land mobile radio; least squares approximations; multipath channels; multiuser channels; DOA; DS-CDMA; LS-DRMTA; MLS-DRMTA; bandwidth overhead; blind algorithm; directions of arrival estimation; frequency band; mobile environment; multipath channel; multipath least squares despread respread multitarget array; multitarget adaptive array algorithm; radiation pattern; wireless CDMA systems; AWGN; Adaptive arrays; Antenna radiation patterns; Bandwidth; Delay effects; Delay estimation; Fading; Multiaccess communication; Receiving antennas; Signal generators;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Antennas and Propagation Society International Symposium, 2001. IEEE
Conference_Location :
Boston, MA, USA
Print_ISBN :
0-7803-7070-8
Type :
conf
DOI :
10.1109/APS.2001.959388
Filename :
959388
Link To Document :
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