A low-power ASIC implementation of 2Mbps antenna-rake combiner for WCDMA with MRC and LMS capabilities

Alireza Tarighat, Eugene Grayver, Ahmed Eltawil, Jean Francois Frigon, Gennadiy Poberezhskiy, Hanli Zou, Babak Daneshrad

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Scopus citations

Abstract

An ASIC implementation of a WCDMA mobile terminal with 2-dimensional adaptive antenna-rake combining is presented in this paper. System analysis shows that adaptive antenna-rake combining techniques can significantly enhance the performance and capacity of cellular systems compared to conventional CDMA systems. A hardware efficient receiver architecture is implemented supporting both maximal ratio combing (MRC) and least mean squares (LMS) algorithm. Moreover, the proposed architectures allows for a dynamic and flexible allocation of available processing resources (total of 20 fingers) to different antennas and multipaths based on the instantaneous channel profile. The presented receiver can operate in both normal and space time transmit diversity (STTD) modes. The system was implemented in a 0.18μm CMOS process and the improvement was validated through real-time field trials. © 2005 IEEE.
Original languageEnglish (US)
Title of host publicationProceedings of the Custom Integrated Circuits Conference
DOIs
StatePublished - Dec 1 2005
Externally publishedYes

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