OFDM-WLAN receiver performance improvement using digital compensation techniques

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...

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Bibliographic Details
Published inProceedings RAWCON 2002. 2002 IEEE Radio and Wireless Conference (Cat. No.02EX573) pp. 111 - 114
Main Authors Eberle, W., Tubbax, J., Come, B., Donnay, S., De Man, H., Gielen, G.
Format Conference Proceeding
LanguageEnglish
Published IEEE 2002
Subjects
Baseband
Bit error rate
Cost function
Demodulation
Dynamic range
Gain control
OFDM
Phase noise
Radio frequency
Wireless LAN
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Summary: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.
ISBN:9780780374584
0780374584
DOI:10.1109/RAWCON.2002.1030130