Title :
An efficient tracking loop for DS/CDMA systems in multipath fading channels
Author :
Guo, Jinghong ; You, Xiaohu ; Cheng, Shlxin
Author_Institution :
Nat. Mobile Commun. Res. Lab., Southeast Univ., Nanjing, China
Abstract :
PN (pseudo-noise) code tracking is the most challenging task in a direct sequence code division multiplex access (DS/CDMA) system for cellular mobile communication systems. In this paper, the gravity of energy windows (GEW) tracking loop of the time and frequency uncertainty of the received signal is investigated, and the GEW´s analytical results in a multipath fading channel are introduced. The GEW tracking loop exploits the inherent multipath diversity of the channel, and has better performance than a single-path when working in multipath fading environments
Keywords :
cellular radio; code division multiple access; fading channels; multipath channels; pseudonoise codes; spread spectrum communication; tracking; DS/CDMA systems; GEW; PN code tracking; cellular mobile communication systems; direct sequence code division multiplex access; efficient tracking loop; frequency uncertainty; gravity of energy windows; multipath diversity; multipath fading channels; pseudo-noise code tracking; time uncertainty; tracking loop; Autocorrelation; Bandwidth; Delay; Fading; Feeds; Frequency; Multiaccess communication; Random processes; Random sequences; Tracking loops;
Conference_Titel :
Vehicular Technology Conference, 1999. VTC 1999 - Fall. IEEE VTS 50th
Conference_Location :
Amsterdam
Print_ISBN :
0-7803-5435-4
DOI :
10.1109/VETECF.1999.797288
