Title :
WLAN-WCDMA dual-mode receiver architecture design trade-offs
Author_Institution :
Dept. of Electr. Eng., Linkoping Univ., Sweden
fDate :
31 May-2 June 2004
Abstract :
This work discusses receiver architecture trade-offs for a combined 802.11a and WCDMA front-end aiming for a high level of integration. Trade-off parameters such as ADC-bandwidth, image rejection, DC-offset rejection, channel-select filter-requirements and 1/f-noise tolerance are considered. In particular, the possibility of using a simple high-pass filter for DC-offset rejection and the SNR-degradation caused by ISI in such a filter are investigated. The conclusion is that a combined low-IF and direct conversion architecture implemented in the same hardware is possible and preferable.
Keywords :
1/f noise; broadband networks; code division multiple access; high-pass filters; intersymbol interference; radio receivers; spread spectrum communication; wireless LAN; 1/f-noise tolerance; DC-offset rejection; ISI; WCDMA; WLAN; channel-select filter-requirement; direct conversion architecture; dual-mode receiver architecture; high-pass filter; image rejection; intersymbol interference; low-IF filter; wideband code division multiple access; wireless local area networks; Bandwidth; Filters; Frequency conversion; Hardware; Image converters; Multiaccess communication; OFDM modulation; Quadrature phase shift keying; Sampling methods; Wireless LAN;
Conference_Titel :
Emerging Technologies: Frontiers of Mobile and Wireless Communication, 2004. Proceedings of the IEEE 6th Circuits and Systems Symposium on
Print_ISBN :
0-7803-7938-1
DOI :
10.1109/CASSET.2004.1321990
