Title :
Design and performance analysis of a noncoherent code tracking loop for DS-CDMA systems
Author :
Lee, Kyung-Joon ; Park, Hyung-Rae ; Chae, Soo-Whan
Author_Institution :
Mobile Telecommun. Res. Div., ETRI, Taejon, South Korea
Abstract :
The performance of the noncoherent code tracking loop designed at the baseband for CDMA applications is analyzed in detail. An analytical closed-form formula for steady-state jitter variance is derived as a function of the pulse shaping filter, timing offset, signal-to-interference ratio, and loop filter coefficients. The performance of the designed tracking loop is evaluated for various design parameters together with verification by computer simulations. Finally, the degradation of BER performance due to timing errors is also investigated for the IMT-2000 system designed by the ETRI
Keywords :
code division multiple access; error statistics; filtering theory; jitter; land mobile radio; pseudonoise codes; pulse shaping; radio tracking; radiofrequency interference; spread spectrum communication; timing; BER performance degradation; DS-CDMA systems; ETRI; IMT-2000 system; analytical closed-form formula; baseband; computer simulations; design parameters; loop filter coefficients; noncoherent code tracking loop; performance analysis; pulse shaping filter; signal-to-interference ratio; steady-state jitter variance; timing errors; timing offset; Analysis of variance; Application software; Baseband; Filters; Jitter; Multiaccess communication; Performance analysis; Signal analysis; Steady-state; Tracking loops;
Conference_Titel :
Vehicular Technology Conference, 1998. VTC 98. 48th IEEE
Conference_Location :
Ottawa, Ont.
Print_ISBN :
0-7803-4320-4
DOI :
10.1109/VETEC.1998.686529
