Orthogonalizing Transmission in MIMO with Linear Receiver and Finite MCS Set. - Helka-Liina Määttänen; Olav Tirkkonen; Klaus Hugl (WCNC, 2008)

CQI-report optimization for multi-mode MIMO with unitary codebook based precoding. - Helka-Liina Määttänen; Olav Tirkkonen; Timo Roman (PIMRC, 2009)

Precoder Partitioning in Closed-loop MIMO Systems. - Helka-Liina Määttänen; Karol Schober; Olav Tirkkonen; Risto Wichman (IEEE Trans. Wirel. Commun., 2009)

Normalized covariance matrix quantization for MIMO broadcast systems. - Karol Schober; Helka-Liina Määttänen; Olav Tirkkonen; Risto Wichman (EW, 2011)

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

Design and Evaluation of LTE-Advanced Double Codebook. - Shuang Tan; Tommi Koivisto; Helka-Liina Määttänen; Kari Pietikäinen; Timo Roman; Mihai Enescu (VTC Spring, 2011)

Beamforming Codebooks for Two Transmit Antenna Systems Based on Optimum Grassmannian Packings. - Renaud-Alexandre Pitaval; Helka-Liina Määttänen; Karol Schober; Olav Tirkkonen; Risto Wichman (IEEE Trans. Inf. Theory, 2011)

Sum Rate Maximizing Zero Interference Linear Multiuser MIMO Transmission. - Helka-Liina Määttänen; Olav Tirkkonen (VTC Spring, 2012)

System-Level Performance of Interference Suppression Receivers in LTE System. - Kari Pietikäinen; Felipe Del Carpio; Helka-Liina Määttänen; Marko Lampinen; Tommi Koivisto; Mihai Enescu (VTC Spring, 2012)

Simple zero interference transmissions to users with rank deficient channels. - Helka-Liina Määttänen; Olav Tirkkonen (WPMC, 2012)

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

CSI Feedback for Dynamic Switching Between Single User and Multiuser MIMO. - Helka-Liina Määttänen; Tommi Koivisto; Mihai Enescu; Olav Tirkkonen (Wirel. Pers. Commun., 2012)

Linear transmission methods and feedback for downlink MIMO systems ; Lineaariset lähetysmenetelmät ja signalointi moniantennijärjestelmän laskevassa siirtotiessä. - Helka-Liina Määttänen (2012)

System-level studies for single user and multiuser interference alignment in a heterogeneous network. - Helka-Liina Määttänen; Harri Niemelainen; Juha Venäläinen; Mikko Valkama (GLOBECOM Workshops, 2013)

System-Level Studies for Multi-User Interference Alignment in a Homogeneous Network. - Harri Niemelainen; Helka-Liina Määttänen; Mikko Valkama (VTC Fall, 2013)

Discovery signal design and measurements for small cell DTX in Release 12 LTE. - Helka-Liina Määttänen; Markku Kuusela; Marko Lampinen; Tao Chen; Jussi Ojala (GLOBECOM Workshops, 2014)

LTE-WLAN aggregation (LWA) in 3GPP Release 13 & Release 14. - Helka-Liina Maattanen; Gino Masini; Mattias Bergström; Antti Ratilainen; Torsten Dudda (CSCN, 2017)

The Sky Is Not the Limit: LTE for Unmanned Aerial Vehicles. - Xingqin Lin; Vijaya Yajnanarayana; Siva D. Muruganathan; Shiwei Gao; Henrik Asplund; Helka-Liina Maattanen; Mattias Bergström; Sebastian Euler; Y.-P. Eric Wang (IEEE Commun. Mag., 2018)

Mobile Networks Connected Drones: Field Trials, Simulations, and Design Insights. - Xingqin Lin; Richard Wiren; Sebastian Euler; Arvi Sadam; Helka-Liina Maattanen; Siva D. Muruganathan; Shiwei Gao; Y.-P. Eric Wang; Juhani Kauppi; Zhenhua Zou; Vijaya Yajnanarayana (CoRR, 2018)

An Overview of 3GPP Release-15 Study on Enhanced LTE Support for Connected Drones. - Siva D. Muruganathan; Xingqin Lin; Helka-Liina Maattanen; Zhenhua Zou; Wuri A. Hapsari; Shinpei Yasukawa (CoRR, 2018)

5G NR Communication over GEO or LEO Satellite Systems: 3GPP RAN Higher Layer Standardization Aspects. - Helka-Liina Maattanen; Björn Hofström; Sebastian Euler; Jonas Sedin; Xingqin Lin; Olof Liberg; Gino Masini; Martin Israelsson (GLOBECOM, 2019)

Public LTE Network Measurements with Drones in Rural Environment. - Joonas Säe; Richard Wiren; Juhani Kauppi; Helka-Liina Maattanen; Johan Torsner; Mikko Valkama (VTC Spring, 2019)

Mobility Support for Cellular Connected Unmanned Aerial Vehicles: Performance and Analysis. - Sebastian Euler; Helka-Liina Maattanen; Xingqin Lin; Zhenhua Zou; Mattias Bergström; Jonas Sedin (WCNC, 2019)

5G New Radio Evolution Meets Satellite Communications: Opportunities, Challenges, and Solutions. - Xingqin Lin; Björn Hofström; Y.-P. Eric Wang; Gino Masini; Helka-Liina Maattanen; Henrik Rydén; Jonas Sedin; Magnus Stattin; Olof Liberg; Sebastian Euler; Siva D. Muruganathan; Stefan G. Eriksson; et al. (CoRR, 2019)

Mobile Network-Connected Drones: Field Trials, Simulations, and Design Insights. - Xingqin Lin; Richard Wiren; Sebastian Euler; Arvi Sadam; Helka-Liina Määttänen; Siva D. Muruganathan; Shiwei Gao; Yi-Pin Eric Wang; Juhani Kauppi; Zhenhua Zou; Vijaya Yajnanarayana (IEEE Veh. Technol. Mag., 2019)

Non-Terrestrial Networks in 5G & Beyond: A Survey. - Federica Rinaldi; Helka-Liina Maattanen; Johan Torsner; Sara Pizzi; Sergey Andreev 001; Antonio Iera; Yevgeni Koucheryavy; Giuseppe Araniti (IEEE Access, 2020)

An Overview of 3GPP Release-15 Study on Enhanced LTE Support for Connected Drones. - Siva D. Muruganathan; Xingqin Lin; Helka-Liina Määttänen; Jonas Sedin; Zhenhua Zou; Wuri A. Hapsari; Shinpei Yasukawa (IEEE Commun. Stand. Mag., 2021)

Broadcasting Services Over 5G NR Enabled Multi-Beam Non-Terrestrial Networks. - Federica Rinaldi; Helka-Liina Määttänen; Johan Torsner; Sara Pizzi; Sergey Andreev 001; Antonio Iera; Yevgeni Koucheryavy; Giuseppe Araniti (IEEE Trans. Broadcast., 2021)

Advanced Air Mobility [From the Guest Editors]. - Kamesh Namuduri; Uwe-Carsten Fiebig; K. V. S. Hari; David W. Matolak; Ismail Güvenç; Helka-Liina Määttänen (IEEE Veh. Technol. Mag., 2021)

The Internet of Things from Space: Transforming LTE Machine Type Communications for Non-Terrestrial Networks. - Talha Ahmed Khan; Xingqin Lin; Stefan Eriksson Löwenmark; Olof Liberg; Sebastian Euler; Jonas Sedin; Emre A. Yavuz; Hazhir Shokri-Razaghi; Helka-Liina Määttänen (IEEE Commun. Stand. Mag., 2022)

Advanced Air Mobility: Research Directions for Communications, Navigation, and Surveillance. - Kamesh Namuduri; Uwe-Carsten Fiebig; David W. Matolak; Ismail Güvenç; K. V. S. Hari; Helka-Liina Määttänen (IEEE Veh. Technol. Mag., 2022)

Radio interface protocols and radio resource management procedures for 5G new radio non-terrestrial networks. - Helka-Liina Määttänen; Jonas Sedin; Sergio Parolari; Robert S. Karlsson (Int. J. Satell. Commun. Netw., 2023)

Mission-Critical Connectivity Enhanced by IAB in Beyond 5G: Interplay of Sidelink, Directional Unicasting, and Multicasting. - Olga Chukhno; Nadezhda Chukhno; Sara Pizzi; Antonino Orsino; Helka-Liina Määttänen; Johan Torsner; Antonella Molinaro; Antonio Iera; Giuseppe Araniti (IEEE Open J. Commun. Soc., 2023)