Title :
CDMA system sensitivity to A/D conversion
Author :
Stefani, Fabrizio ; Moschitta, Antonio ; Carbone, Paolo
Author_Institution :
Dipt. di Ingegneria Elettronica e dell´´Informazione, Universita degli Studi di Perugia, Italy
Abstract :
In this paper, the performance of a CDMA system using digital frequency conversion is analyzed and modeled. The joint effect of channel noise, sampling jitter and ADC errors is discussed and modeled assuming uniform converters. Variable resolution PCM and ΣΔ A/D converters are considered, and the sensitivities of the resulting systems to channel noise, sampling jitter, and overloading errors are compared.
Keywords :
AWGN channels; code division multiple access; intersymbol interference; jitter; phase shift keying; quantisation (signal); radio receivers; sigma-delta modulation; spread spectrum communication; ADC errors; ADC sensitivity; AWGN channel; BPSK; CDMA system; ISI; channel noise; digital frequency conversion; direct digital modulation; overloading errors; sampling jitter; sigma-delta converters; spread spectrum; uniform converters; variable resolution PCM; AWGN; Additive white noise; Distributed decision making; Frequency conversion; Modulation coding; Multiaccess communication; Quantization; Sampling methods; Superconducting device noise; System performance;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 2004. IMTC 04. Proceedings of the 21st IEEE
Print_ISBN :
0-7803-8248-X
DOI :
10.1109/IMTC.2004.1351490
