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IEICE TRANSACTIONS on Fundamentals

Design and Implementation of an Uplink Baseband Receiver for Wideband CDMA Communications

Hsi-Pin MA, Steve Hengchen HSU, Tzi-Dar CHIUEH

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Summary :

This paper presents architecture design, FPGA implementation, and measurement results of a real-time signal processing circuit for WCDMA uplink baseband receiver. To enhance uplink signal-to-interference-plus-noise ratio (SINR) performance, a four-element antenna array and a four-finger Rake combiner are integrated in the proposed receiver. Moreover, a low-complexity beamforming architecture using a correlator-based beam searcher, a decision-directed carrier synchronization loop, and a matched-filter based channel estimator is also designed. Simulations are based on the standard Doppler-fading scalar channel models provided by 3GPP and an extension to vector channel models that specify angle of arrival for each path is also made for beamformer simulation. Simulation and hardware emulation results show that the proposed architecture meets the specified requirements. In addition, this architecture, with its correlator-based beamformer weights, achieves such performance improvement with relatively low hardware complexity.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E85-A No.12 pp.2813-2821
Publication Date
2002/12/01
Publicized
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DOI
Type of Manuscript
Special Section PAPER (Special Section on Spread Spectrum Techniques and Applications)
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