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OFDM-WLAN receiver performance improvement using digital compensation techniques

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6 Author(s)
Eberle, W. ; DESICS, IMEC, Leuven, Belgium ; Tubbax, J. ; Come, B. ; Donnay, S.
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Zero-IF receiver architectures are preferred over superheterodyne solutions since their better integration capabilities result in cost advantages. However, zero-IF receivers present a set of analog non-idealities to the system designer. Among those, DC offsets, I/Q mismatch, phase noise, and limited dynamic range are the most challenging ones. For each or these imperfections, we propose digital compensation techniques that can either improve receiver performance considerably or allow a relaxation of the analog front-end specifications. Simulation results are presented for IEEE 802.11a-compliant receiver specifications.

Published in:

Radio and Wireless Conference, 2002. RAWCON 2002. IEEE

Date of Conference:

2002