Mikko Valkama

Qimei Cui, Peichuan Kang, Xueqing Huang, Mikko Valkama, Jarno Niemelä: Optimal power allocation for homogeneous and heterogeneous CA-MIMO systems. SCIENCE CHINA Information Sciences 56(2): 123-136 (2013)

Lauri Anttila, Mikko Valkama: Blind Signal Estimation in Widely-Linear Signal Models With Fourth-Order Circularity: Algorithms and Application to Receiver I/Q Calibration. IEEE Signal Process. Lett. 20(3): 221-224 (2013)

Jian Luo, Andreas Kortke, Wilhelm Keusgen, Mikko Valkama: A Novel Adaptive Calibration Scheme for Frequency-Selective I/Q Imbalance in Broadband Direct-Conversion Transmitters. IEEE Trans. on Circuits and Systems 60-II(2): 61-65 (2013)

Vesa Lehtinen, Toni Lahteensuo, Petri Vasenkari, Antti Piipponen, Mikko Valkama: Gating factor analysis of maximum power reduction in multicluster LTE-A uplink transmission. RWS 2013: 151-153

Aki Hakkarainen, Janis Werner, Mikko Valkama: RF imperfections in antenna arrays: Response analysis and widely-linear digital beamforming. RWS 2013: 187-189

Helka-Liina Määttänen, Kari Hämäläinen, Juha Venäläinen, Karol Schober, Mihai Enescu, Mikko Valkama: System-level performance of LTE-Advanced with joint transmission and dynamic point selection schemes. EURASIP J. Adv. Sig. Proc. 2012: 247 (2012)

Min Zhou, Qimei Cui, Mikko Valkama, Xiaofeng Tao: Energy-efficient resource allocation for OFDMA-based two-way relay channel with physical-layer network coding. EURASIP J. Wireless Comm. and Networking 2012: 66 (2012)

Markus Allén, Toni Levanen, Jaakko Marttila, Mikko Valkama: Iterative Signal Processing for Mitigation of Analog-to-Digital Converter Clipping Distortion in Multiband OFDMA Receivers. J. Electrical and Computer Engineering 2012 (2012)

Adnan Qamar Kiayani, Lauri Anttila, Yaning Zou, Mikko Valkama: Advanced Receiver Design for Mitigating Multiple RF Impairments in OFDM Systems: Algorithms and RF Measurements. J. Electrical and Computer Engineering 2012 (2012)

Ali Hagh Ghadam, Sascha Burglechner, Ahmet Hasim Gokceoglu, Mikko Valkama, Andreas Springer: Implementation and Performance of DSP-Oriented Feedforward Power Amplifier Linearizer. IEEE Trans. on Circuits and Systems 59-I(2): 409-425 (2012)

Pramod Mathecken, Taneli Riihonen, Nikolay N. Tchamov, Stefan Werner, Mikko Valkama, Risto Wichman: Characterization of OFDM Radio Link Under PLL-Based Oscillator Phase Noise and Multipath Fading Channel. IEEE Transactions on Communications 60(6): 1479-1485 (2012)

Ahmet Hasim Gokceoglu, Ali Hagh Ghadam, Mikko Valkama: Steady-State Performance Analysis and Step-Size Selection for LMS-Adaptive Wideband Feedforward Power Amplifier Linearizer. IEEE Transactions on Signal Processing 60(1): 82-99 (2012)

Yong Fan, Mikko Valkama: Enhanced VoIP Support in OFDMA-based Packet Radio Networks. Wireless Personal Communications 66(2): 343-366 (2012)

Ville Syrjälä, Mikko Valkama: Flexible adjacent channel interference and phase noise suppression in energy-efficient OFDMA receivers. CAMAD 2012: 221-225

Ari Asp, Yaroslav Sydorov, Mikko Valkama, Jarno Niemelä: Radio signal propagation and attenuation measurements for modern residential buildings. GLOBECOM Workshops 2012: 580-584

Ali Hazmi, Jukka Rinne, Mikko Valkama: Feasibility study of IΕΕΕ 802.11ah radio technology for IoT and M2M use cases. GLOBECOM Workshops 2012: 1687-1692

Ville Syrjälä, Vesa Lehtinen, Mikko Valkama: Sampling jitter in charge sampling radio. WCNC Workshops 2012: 59-63

Yong Fan, Mikko Valkama: Efficient Control Channel Resource Allocation for VoIP in OFDMA-Based Packet Radio Networks. EURASIP J. Wireless Comm. and Networking 2011 (2011)

Jaakko Marttila, Markus Allén, Mikko Valkama: Multistage Quadrature Sigma-Delta Modulators for Reconfigurable Multi-Band Analog-Digital Interface in Cognitive Radio Devices. EURASIP J. Wireless Comm. and Networking 2011: 130 (2011)

Yong Fan, Mikko Valkama: Enhancing VoIP in UTRAN LTE Downlink: Methods and Performance. IEICE Transactions 94-B(8): 2338-2345 (2011)

Lauri Anttila, Mikko Valkama: On Circularity of Receiver Front-end Signals Under RF Impairments. EW 2011

Stanislav Nonchev, Mikko Valkama, Ridha Hamila: Advanced packet scheduling for efficient video support with limited channel feedback on MIMO LTE downlink. GLOBECOM Workshops 2011: 766-771

Ville Syrjälä, Mikko Valkama: Receiver DSP for OFDM Systems Impaired by Transmitter and Receiver Phase Noise. ICC 2011: 1-6

Stanislav Nonchev, Mikko Valkama: QoS-Oriented Packet Scheduling for Efficient Video Support in OFDMA-Based Packet Radio Systems. MACOM 2011: 168-180

Adnan Qamar Kiayani, Lauri Anttila, Yaning Zou, Mikko Valkama: Hybrid time/frequency domain compensator for RF impairments in OFDM systems. PIMRC 2011: 1948-1952

Helka-Liina Määttänen, Toni Huovinen, Tommi Koivisto, Mihai Enescu, Olav Tirkkonen, Mikko Valkama: Performance Evaluations for Multiuser CQI Enhancements for LTE-Advanced. VTC Spring 2011: 1-5

Min Zhou, Qimei Cui, Hui Wang, Xiaofeng Tao, Hui Tian, Mikko Valkama: Link-oriented power allocation in multicast systems with physical layer network coding. WCNC 2011: 1493-1498

Ville Syrjälä, Mikko Valkama, Yaning Zou, Nikolay N. Tchamov, Jukka Rinne: On OFDM link performance under receiver phase noise with arbitrary spectral shape. WCNC 2011: 1948-1953

Adnan Qamar Kiayani, Lauri Anttila, Olli Mylläri, Mikko Valkama: Prototype implementation and RF performance measurements of DSP based transmitter I/Q imbalance calibration. CSNDSP 2010: 484-489

Mikko Valkama, Andreas Springer, Gernot Hueber: Digital signal processing for reducing the effects of RF imperfections in radio devices - An overview. ISCAS 2010: 813-816

Ville Syrjälä, Mikko Valkama: Sampling Jitter Cancellation in Direct-Sampling Radio. WCNC 2010: 1-6

Stanislav Nonchev, Mikko Valkama: Advanced Radio Resource Management for Multi Antenna Packet Radio Systems. CoRR abs/1005.1734 (2010)

Stanislav Nonchev, Mikko Valkama: A New Fairness-Oriented Packet Scheduling Scheme with Reduced Channel Feedback for OFDMA Packet Radio Systems. IJCNS 2(7): 608-618 (2009)

Gernot Hueber, Yaning Zou, Krzysztof Dufrene, Rainer Stuhlberger, Mikko Valkama: Smart Front-End Signal Processing for Advanced Wireless Receivers. J. Sel. Topics Signal Processing 3(3): 472-487 (2009)

Stanislav Nonchev, Mikko Valkama: Efficient Packet Scheduling Schemes for Multiantenna Packet Radio Downlink. AICT 2009: 404-409

Nikolay N. Tchamov, Jukka Rinne, Ville Syrjälä, Mikko Valkama, Yaning Zou, Markku Renfors: VCO phase noise trade-offs in PLL design for DVB-T/H receivers. ICECS 2009: 527-530

Sascha Burglechner, Andreas Springer, Shahed Hagh Ghadam, Mikko Valkama, Gernot Hueber: DSP Oriented Implementation of a Feedforward Power Amplifier Linearizer. ISCAS 2009: 1755-1758

Yaning Zou, Mikko Valkama, Markku Renfors: Performance analysis of spatial multiplexing MIMO-OFDM systems under frequency-selective I/Q imbalances. IWCMC 2009: 1381-1386

Stanislav Nonchev, Mikko Valkama: Efficient Power-Aware Packet Scheduling for Multiantenna Packet Radio Systems. NetCoM 2009: 344-348

Ville Syrjälä, Mikko Valkama: Jitter mitigation in high-frequency bandpass-sampling OFDM radios. WCNC 2009: 1079-1084

Yaning Zou, Mikko Valkama, Markku Renfors: Analysis and Compensation of Transmitter and Receiver I/Q Imbalances in Space-Time Coded Multiantenna OFDM Systems. EURASIP J. Wireless Comm. and Networking 2008 (2008)

Lauri Anttila, Mikko Valkama, Markku Renfors: Frequency-Selective I/Q Mismatch Calibration of Wideband Direct-Conversion Transmitters. IEEE Trans. on Circuits and Systems 55-II(4): 359-363 (2008)

Yaning Zou, Mikko Valkama, Markku Renfors: Digital Compensation of I/Q Imbalance Effects in Space-Time Coded Transmit Diversity Systems. IEEE Transactions on Signal Processing 56(6): 2496-2508 (2008)

Piotr Rykaczewski, Mikko Valkama, Markku Renfors: On the Connection of I/Q Imbalance and Channel Equalization in Direct-Conversion Transceivers. IEEE T. Vehicular Technology 57(3): 1630-1636 (2008)

Lauri Anttila, Mikko Valkama, Markku Renfors: Circularity-Based I/Q Imbalance Compensation in Wideband Direct-Conversion Receivers. IEEE T. Vehicular Technology 57(4): 2099-2113 (2008)

Lauri Anttila, Mikko Valkama, Markku Renfors: Efficient Mitigation of Frequency-Selective I/Q Imbalance in OFDM Receivers. VTC Fall 2008: 1-5

Yong Fan, Petteri Lunden, Markku Kuusela, Mikko Valkama: Efficient Semi-Persistent Scheduling for VoIP on EUTRA Downlink. VTC Fall 2008: 1-5

Yaning Zou, Mikko Valkama, Markku Renfors: Pilot-Based Compensation of Frequency-Selective I/Q Imbalances in Direct-Conversion OFDM Transmitters. VTC Fall 2008: 1-5

Yong Fan, Markku Kuusela, Petteri Lunden, Mikko Valkama: Downlink VoIP Support for Evolved UTRA. WCNC 2008: 1933-1938

Ville Syrjälä, Mikko Valkama, Markku Renfors: Design considerations for direct RF sampling receiver in GNSS environment. WPNC 2008: 9-13

Lauri Anttila, Mikko Valkama, Markku Renfors: 3.9G Radio Reception with SC-FDMA Waveforms Under I/Q Imbalance. ISCAS 2007: 25-28

Lauri Anttila, Mikko Valkama, Markku Renfors: Blind Moment Estimation Techniques for I/Q Imbalance Compensation in Quadrature Receivers. PIMRC 2006: 1-5

Piotr Rykaczewski, Mikko Valkama, Markku Renfors, Friedrich Jondral: Non-Data-Aided I/Q Imbalance Compensation Using Measured Receiver Front-End Signals. PIMRC 2006: 1-5

Mikko Valkama, Markku Renfors, Visa Koivunen: Blind I/Q Signal Separation-Based Solutions for Receiver Signal Processing. EURASIP J. Adv. Sig. Proc. 2005(16): 2708-2718 (2005)

Mikko Valkama, Markku Renfors, Visa Koivunen: Blind I/Q imbalance compensation in OFDM receivers based on adaptive I/Q signal decorrelation. ISCAS (3) 2005: 2611-2614

César Caballero Gaudes, Mikko Valkama, Markku Renfors: A novel frequency synthesizer concept for wireless communications. ISCAS (2) 2003: 85-88

Mikko Valkama, Juho Pirskanen, Markku Renfors: Signal processing challenges for applying software radio principles in future wireless terminals: an overview. Int. J. Communication Systems 15(8): 741-769 (2002)

Mikko Valkama, Markku Renfors, Visa Koivunen: Advanced methods for I/Q imbalance compensation in communication receivers. IEEE Transactions on Signal Processing 49(10): 2335-2344 (2001)

Mikko Valkama, Markku Renfors: Second-order sampling of wideband signals. ISCAS (2) 2001: 801-804

Mikko Valkama, Markku Renfors: Advanced DSP for I/Q Imbalance Compensation in a Low-IF Receiver. ICC (2) 2000: 768-772