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Adaptive Compensation of RF Front-End Nonidealities in Direct Conversion Receivers

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2 Author(s)
Sadat Ebadi, Z. ; Univ. of British Columbia, Vancouver ; Saleh, R.

In this paper, we focus on developing and demonstrating the application of a complex quantized feedback technique to mitigate unwanted effects of the direct conversion receiver (DCR) using adaptive filtering. The approach is based on cross-coupling the I and Q signal paths of the DCR with suitable adaptive filters. The obtained results indicate that the proposed compensation technique can be used to suppress dc offset, baseline wander effect, I/Q mismatch and flicker noise, and has applications in orthogonal frequency-division multiplexing signaling.

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Circuits and Systems II: Express Briefs, IEEE Transactions on  (Volume:55 ,  Issue: 4 )