Title :
Receiver architectures for the down-link in a DS-CDMA mobile system
Author :
Bernasconi, Valerio
Author_Institution :
CSELT, Torino, Italy
fDate :
27 Sep-1 Oct 1994
Abstract :
Some receiver architectures for the down-link in a DS-CDMA (direct sequence-code division multiple access) mobile communications system are here outlined. The performance relevant to a three-arms RAKE receiver, with a refined multipath tracking structure, is compared with that obtained by a less sophisticated RAKE receiver and, for reference purposes, with that of a classical receiver synchronized on the strongest path. The receiver makes use of a pilot signal transmitted by the base station for synchronization and channel equalization purposes. The effects of the multipath tracking algorithm and the sensitivity to some parameters of paramount importance (pilot to useful signal power ratio, mobile speed, quantization) have been simulated under multipath fading propagation conditions. The results of such simulations are presented as well as some indications about a design of a receiver based on the above structure
Keywords :
cellular radio; code division multiple access; equalisers; fading; land mobile radio; pseudonoise codes; quantisation (signal); radio receivers; spread spectrum communication; synchronisation; tracking; DS-CDMA mobile system; base station; cellular phone system; channel equalization; classical receiver; design; down-link; mobile speed; multi-path tracking structure; multipath fading propagation; performance; pilot signal; quantization; receiver architectures; synchronization; three-arms RAKE receiver; Fading; Filters; Laboratories; Multiaccess communication; Multipath channels; Partial transmit sequences; RAKE receivers; Sampling methods; Signal to noise ratio; Working environment noise;
Conference_Titel :
Universal Personal Communications, 1994. Record., 1994 Third Annual International Conference on
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-1823-4
DOI :
10.1109/ICUPC.1994.383060
