M
Mikko Valkama
Researcher at Tampere University of Technology
Publications - 692
Citations - 13733
Mikko Valkama is an academic researcher from Tampere University of Technology. The author has contributed to research in topics: Transmitter & Orthogonal frequency-division multiplexing. The author has an hindex of 48, co-authored 654 publications receiving 10903 citations. Previous affiliations of Mikko Valkama include Aalto University & Beijing University of Posts and Telecommunications.
Papers
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Advanced methods for I/Q imbalance compensation in communication receivers
TL;DR: In this paper, the authors carried out general signal analysis of an imbalanced I/Q processing receiver and proposed novel methods for I and Q imbalance compensation using baseband digital signal processing.
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Circularity-Based I/Q Imbalance Compensation in Wideband Direct-Conversion Receivers
TL;DR: Two novel blind low-complexity I/Q imbalance compensation techniques are proposed and analyzed to digitally enhance the analog FE image attenuation in wideband direct-conversion receivers and can provide very good compensation performance with low computational resources and are robust in the face of different imbalance levels and dynamics of the received signals.
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Widely Linear Digital Self-Interference Cancellation in Direct-Conversion Full-Duplex Transceiver
TL;DR: The analysis shows that after realistic antenna isolation and RF cancellation, the dominant self-interference waveform at the receiver digital baseband can be modeled through a widely linear transformation of the original transmit data, opposed to classical purely linear models.
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Full-Duplex Transceiver System Calculations: Analysis of ADC and Linearity Challenges
TL;DR: It is observed that the nonlinear distortion produced by the transmitter PA is a significant issue in a full-duplex transceiver and, when using cheaper and less linear components, also the receiver chain nonlinearities become considerable.
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Recent advances in antenna design and interference cancellation algorithms for in-band full duplex relays
Mikko Heino,Dani Korpi,Timo Huusari,Emilio Antonio-Rodriguez,Sathya N. Venkatasubramanian,Taneli Riihonen,Lauri Anttila,Clemens Icheln,Katsuyuki Haneda,Risto Wichman,Mikko Valkama +10 more
TL;DR: Novel state-of-the-art antenna solutions as well as digital self-interference cancellation algorithms for compact MIMO full-duplex relays, specifically targeted for reduced-cost deployments in local area networks are presented.