The spectrum efficiency of a base station antenna array system for spatially selective transmission. - Per Zetterberg; Björn E. Ottersten (VTC, 1994)

A downlink beam steering technique for GSM/DCS1800/PCS1900. - Per Zetterberg; Poul Leth Espensen (PIMRC, 1996)

Algorithm test using measurements from an adaptive antenna array testbed for GSM/UMTS. - Poul Leth Espensen; Per Zetterberg; Preben E. Mogensen; Frank Frederiksen; Kim Olesen; Steen Leth Larsen (PIMRC, 1997)

Performance of Adaptive Antennas in FH-GSM Using Conventional Beamforming. - Preben E. Mogensen; Poul Leth Espensen; Per Zetterberg; Klaus I. Pedersen; Frank Frederiksen (Wirel. Pers. Commun., 2000)

Downlink beamforming with delayed channel estimates under total power, element power and equivalent isotropic radiated power (EIRP) constraints. - Per Zetterberg; Mats Bengtsson; Darren McNamara; Peter Karlsson; Mark A. Beach (VTC Fall, 2001)

Performance of multiple-receive multiple-transmit beamforming in WLAN-type systems under power or EIRP constraints with delayed channel estimates. - Per Zetterberg; Mats Bengtsson; Darren McNamara; Peter Karlsson; Mark A. Beach (VTC Spring, 2002)

Single Carrier Frequency Domain Equalization on a Real-Time DSP-Based MIMO Test-Bed. - Andrew Logothetis; Afif Osseiran; Per Zetterberg (PIMRC, 2005)

Implementation of a Smart Antenna Multiuser Algorithm on a DSP-Based Wireless MIMO Test-Bed. - Xi Zhang 002; Patrick Svedman; Henrik Lundin; Per Zetterberg (PIMRC, 2005)

Wideband Spatial Channel Model for MIMO Systems at 5 GHz in Indoor and Outdoor Environments. - Hassan M. El-Sallabi; Daniel S. Baum; Per Zetterberg; Pekka Kyösti; Terhi Rautiainen; Christian Schneider 003 (VTC Spring, 2006)

Realization of a Spatially Multiplexed MIMO System. - David Samuelsson; Joakim Jaldén; Per Zetterberg; Björn E. Ottersten (EURASIP J. Adv. Signal Process., 2006)

Correlation Properties of Large Scale Fading Based on Indoor Measurements. - Niklas Jaldén; Per Zetterberg; Björn E. Ottersten; Aihua Hong; Reiner S. Thomä (WCNC, 2007)

Measurements of MIMO Indoor Channels at 1800 MHz with Multiple Indoor and Outdoor Base Stations. - Laura G. García; Niklas Jaldén; Björn Lindmark; Per Zetterberg; Leandro de Haro-Ariet (EURASIP J. Wirel. Commun. Netw., 2007)

Inter- and Intrasite Correlations of Large-Scale Parameters from Macrocellular Measurements at 1800 MHz. - Niklas Jaldén; Per Zetterberg; Björn E. Ottersten; Laura G. García (EURASIP J. Wirel. Commun. Netw., 2007)

Directional Dependence of Large Scale Parameters in Wireless Channel Models. - Niklas Jaldén; Per Zetterberg; Björn E. Ottersten (WCNC, 2008)

Experimental Investigation of Cooperative Schemes on a Real-Time DSP-Based Testbed. - Per Zetterberg; Christos Mavrokefalidis; Aris S. Lalos; Emmanouil Matigakis (EURASIP J. Wirel. Commun. Netw., 2009)

Cross Layer Implementation of a Multi-User MIMO Test-Bed. - Niklas Jaldén; Svante Bergman; Per Zetterberg; Björn E. Ottersten; Karl Werner (WCNC, 2010)

Modelling Angle Spread Autocorrelations and the Impact on Multi-User Diversity Gains. - Niklas Jaldén; Per Zetterberg; Björn E. Ottersten (WCNC, 2010)

Receiver I/Q Imbalance: Tone Test, Sensitivity Analysis, and the Universal Software Radio Peripheral. - Peter Händel; Per Zetterberg (IEEE Trans. Instrum. Meas., 2010)

An SDR architecture for OFDM transmission over USRP2 boards. - Gilberto Berardinelli; Per Zetterberg; Oscar Tonelli; Andrea F. Cattoni; Troels B. Sørensen; Preben E. Mogensen (ACSCC, 2011)

An Experimental Investigation of SIMO, MIMO, Interference-Alignment (IA) and Coordinated Multi-Point (CoMP) - Per Zetterberg; Nima N. Moghadam (CoRR, 2011)

Experimental Investigation of TDD Reciprocity-Based Zero-Forcing Transmit Precoding. - Per Zetterberg (EURASIP J. Adv. Signal Process., 2011)

Transceiver Inphase/Quadrature Imbalance, Ellipse Fitting, and the Universal Software Radio Peripheral. - Cristian R. Rojas; Per Zetterberg; Peter Händel (IEEE Trans. Instrum. Meas., 2011)

Optimal coordinated beamforming in the multicell downlink with transceiver impairments. - Emil Björnson; Per Zetterberg; Mats Bengtsson (GLOBECOM, 2012)

WiFi fingerprint indoor positioning system using probability distribution comparison. - Nicolas Le Dortz; Florian Gain; Per Zetterberg (ICASSP, 2012)

Cost reference particle filter in data aided channel estimation and phase noise tracking for OFDM systems. - Senay Negusse; Per Zetterberg (ICASSP, 2012)

Correlation of distortion noise between the branches of MIMO transmit antennas. - Nima N. Moghadam; Per Zetterberg; Peter Händel; Håkan Hjalmarsson (PIMRC, 2012)

On SNR estimation using IEEE-STD-1057 three-parameter sine wave fit. - Senay Negusse; Peter Handel; Per Zetterberg (I2MTC, 2013)

Interference alignment over a combination of space and frequency. - Rasmus Brandt; Per Zetterberg; Mats Bengtsson (ICC Workshops, 2013)

Capacity Limits and Multiplexing Gains of MIMO Channels with Transceiver Impairments. - Emil Björnson; Per Zetterberg; Mats Bengtsson; Björn E. Ottersten (IEEE Commun. Lett., 2013)

Approximate Maximum Likelihood Estimation of Rician K-Factor and Investigation of Urban Wireless Measurements. - Samer Medawar; Peter Händel; Per Zetterberg (IEEE Trans. Wirel. Commun., 2013)

Interference alignment (IA) and coordinated multi-point (CoMP) with IEEE802.11AC feedback compression: Testbed results. - Per Zetterberg (ICASSP, 2014)

Test-bed implementation of iterative interference alignment and power control for wireless MIMO interference networks. - Nima N. Moghadam; Hamed Farhadi; Per Zetterberg; Mikael Skoglund (SPAWC, 2014)

Interference Alignment (IA) and Coordinated Multi-Point (CoMP) Overheads and RF Impairments: Testbed Results. - Per Zetterberg (VTC Fall, 2014)

Interference Alignment: Practical Challenges and Test-bed Implementation. - Nima Najari Moghadam; Hamed Farhadi; Per Zetterberg; Majid Nasiri Khormuji; Mikael Skoglund (CoRR, 2014)

IEEE-STD-1057 Three Parameter Sine Wave Fit for SNR Estimation: Performance Analysis and Alternative Estimators. - Senay Negusse; Peter Händel; Per Zetterberg (IEEE Trans. Instrum. Meas., 2014)

Optimal power allocation for pilot-assisted interference alignment in MIMO interference networks: Test-bed results. - Nima N. Moghadam; Hamed Farhadi; Per Zetterberg (DSP, 2015)

Open Source SDR Frontend and Measurements for 60-GHz Wireless Experimentation. - Per Zetterberg; Ramin Fardi (IEEE Access, 2015)

Phase-Noise Mitigation in OFDM by Best Match Trajectories. - Senay Negusse; Per Zetterberg; Peter Händel (IEEE Trans. Commun., 2015)

Impact of Major RF Impairments on mm-Wave Communications Using OFDM Waveforms. - Yaning Zou; Per Zetterberg; Ulf Gustavsson; Tommy Svensson; Ali A. Zaidi; Tobias Kadur; Wolfgang Rave; Gerhard P. Fettweis (GLOBECOM Workshops, 2016)

A Preliminary Study on Waveform Candidates for 5G Mobile Radio Communications above 6 GHz. - Ali A. Zaidi; Jian Luo 001; Robin Gerzaguet; Andreas Wolfgang; Richard J. Weiler; Jaakko Vihriälä; Tommy Svensson; Yinan Qi; Hardy Halbauer; Zhao Zhao; Per Zetterberg; Honglei Miao (VTC Spring, 2016)

Mm-wave specific challenges in designing 5G transceiver architectures and air-interfaces. - Mythri Hunukumbure; Jian Luo 001; Mario H. Castañeda; Raffaele D'Errico; Per Zetterberg; Ali A. Zaidi; Jaakko Vihriälä; Domenico Giustiniano (CoRR, 2018)