Digital full-band linearization of wideband direct-conversion receiver for radar and communications applications
Allen, Markus; Marttila, Jaakko; Valkama, Mikko; Singh, Simran; Epp, Michael; Schlecker, Wolfgang (2016-02-26)
IEEE COMPUTER SOCIETY PRESS
Julkaisun pysyvä osoite on
This paper proposes a fully digital post-processing solution for cancelling nonlinear distortion and mirror-frequency interference in wideband direct-conversion receivers (DCRs). Favorable cost, integrability, and power efficiency have made DCRs a popular choice in communication systems. It is also an emerging trend in radar systems since digital post-processing enables sufficient performance. The proposed method cancels the most essential distortion adaptively during normal receiver operation without any prior information. Improved cancellation performance compared to the state-of-the-art is achieved considering inband and neighboring band distortion induced by the strong received signals. This is verified and demonstrated with extensive simulations and true RF hardware measurements.
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