BER performance analysis of a direct conversion receiver

Direct conversion receivers are increasingly popular for use in mobile terminals. This is due to advantages over other architectures such as heterodyne receivers in terms of cost, electrical current, and physical size. However, a direct conversion receiver often generates a DC-offset that has to be...

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Bibliographic Details
Published in:IEEE transactions on communications 2002-05, Vol.50 (5), p.856-865
Main Authors: Lindoff, B., Malm, P.
Format: Article
Language:English
Subjects:
Baseband
Bit error rate
Channels
Costs
Design engineering
Direct conversion
Error analysis
Fading
Performance analysis
Pilots
Production
Radio frequency
Receivers
Retarding
Signal to noise ratio
Terminals
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Summary:Direct conversion receivers are increasingly popular for use in mobile terminals. This is due to advantages over other architectures such as heterodyne receivers in terms of cost, electrical current, and physical size. However, a direct conversion receiver often generates a DC-offset that has to be taken care of either by suppressing the DC-offset in the radio-frequency part of the receiver, or by taking care of it during baseband processing. A theoretical analysis of the bit error rate (BER) performance in a direct conversion receiver with different levels of DC-offset suppression is presented. Explicit results are presented on how the BER depends on the signal-to-noise ratio (SNR), the signal-to-DC-level, and the choice of pilot symbols both with M-QAM and M-PSK in a slow, flat Rayleigh fading channel. A design rule, which applies to the design of DC-compensation in direct conversion receivers, is also presented.
ISSN:0090-6778
1558-0857
DOI:10.1109/TCOMM.2002.1006566