Suppression of constant modulus interference in multimode transceivers by closed-loop tuning of a nonlinear circuit

H. Habibi, E.J.G. Janssen, Y. Wu, J.W.M. Bergmans, P.G.M. Baltus

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

6 Citations (Scopus)
1 Downloads (Pure)


In multimode transceivers, the transmitter for one communication standard may induce a large interferer in the receiver for another standard. To linearly suppress this interferer, which can be several orders of magnitude larger than the desired received signal, the receiver should have a very large linear dynamic range, resulting in excessive power consumption. Many of potential interferers have a constant modulus modulation. Baier and Friederichs introduced a tuneable nonlinear circuit which can suppress a constant modulus interferer without excessive power consumption. Since an open- loop tuning method is used, the worst- case interference suppression was strongly limited by inaccuracy of circuit components. To alleviate this limitation, we propose a closed- loop tuning method that exploits the locally available interference as side information. Our analysis shows that the proposed method can strongly suppress the interferer while a symbol error rate performance close to that of an exactly linear receiver is achieved. Simulation results for a practical scenario confirm this analysis, and promise much smaller power consumption than for linear interference suppression approaches.
Original languageEnglish
Title of host publicationProceedings of the IEEE 75th Vehicular Technology Conference (VTC Spring 2012), 6-9 May 2012, Yokohama, Japan
Place of PublicationPiscataway
PublisherInstitute of Electrical and Electronics Engineers
Publication statusPublished - 2012
Event75th Vehicular Technology Conference (VTC 2012-Spring) - Yokohama, Japan
Duration: 6 May 20129 May 2012
Conference number: 75


Conference75th Vehicular Technology Conference (VTC 2012-Spring)
Abbreviated titleVTC 2012-Spring


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