Title :
WCDMA receiver architecture with unique frequency plan
Author :
Mostafa, Mohamed A I ; Fernando, M.C. ; Chan, W.K. ; Gore, Charles
Author_Institution :
Micro Linear Corp., San Jose, CA, USA
fDate :
6/23/1905 12:00:00 AM
Abstract :
A WCDMA receiver architecture is presented that utilizes the subsampling concept to down-convert the IF signal to a lower IF before being digitized. The receiver does not need an anti-aliasing filter before the ADC, only uses a single path until the ADC and generates the I and Q paths in digital domain to avoid I-Q analog mismatches. This architecture utilizes a bandpass sigma-delta ADC with 55 dB dynamic range
Keywords :
cellular radio; code division multiple access; multimedia communication; sigma-delta modulation; wireless LAN; ADC; I path; IF signal down-conversion; Q path; WCDMA receiver architecture; bandpass sigma-delta convertor; digital domain; single path; subsampling concept; Bandwidth; Baseband; Costs; Energy consumption; Image converters; Multiaccess communication; Radio frequency; Random sequences; SAW filters; Signal to noise ratio;
Conference_Titel :
ASIC/SOC Conference, 2001. Proceedings. 14th Annual IEEE International
Conference_Location :
Arlington, VA
Print_ISBN :
0-7803-6741-3
DOI :
10.1109/ASIC.2001.954673
