Kari Leppänen

According to our database, Kari Leppänen authored at least 36 papers between 2007 and 2021.

Collaborative distances:

• Dijkstra number of four.
• Erdős number of four.

2021

Novel Wake-up Scheme for Energy-Efficient Low-Latency Mobile Devices in 5G Networks.

Soheil Rostami, Kari Heiska, Oleksandr Puchko, Kari Leppänen, Mikko Valkama

IEEE Trans. Mob. Comput., 2021

2020

Wake-up Radio-Based 5G Mobile Access: Methods, Benefits, and Challenges.

Soheil Rostami, Petteri Kela, Kari Leppänen, Mikko Valkama

IEEE Commun. Mag., 2020

2019

Pre-Grant Signaling for Energy-Efficient 5G and Beyond Mobile Devices: Method and Analysis.

Soheil Rostami, Kari Heiska, Oleksandr Puchko, Kari Leppänen, Mikko Valkama

IEEE Trans. Green Commun. Netw., 2019

On the Performance of AoA-Based Localization in 5G Ultra-Dense Networks.

Estifanos Yohannes Menta, Nicolas Malm, Riku Jäntti, Kalle Ruttik, Mário Costa, Kari Leppänen

IEEE Access, 2019

2018

Benefits of Positioning-Aided Communication Technology in High-Frequency Industrial IoT.

Elena Simona Lohan, Mike Koivisto, Olga Galinina, Sergey Andreev, Antti Tölli, Giuseppe Destino, Mário Costa, Kari Leppänen, Yevgeni Koucheryavy, Mikko Valkama

IEEE Commun. Mag., 2018

Wireless powered wake-up receiver for ultra-low-power devices.

Soheil Rostami, Kari Heiska, Oleksandr Puchko, Kari Leppänen, Mikko Valkama

Proceedings of the 2018 IEEE Wireless Communications and Networking Conference, 2018

Joint cmWave-based multiuser positioning and network synchronization in dense 5G networks.

Mike Koivisto, Jukka Talvitie, Mário Costa, Kari Leppänen, Mikko Valkama

Proceedings of the 2018 IEEE Wireless Communications and Networking Conference, 2018

Analog Beamforming for mmW Circular Arrays with Limited Number of RF Chains.

Petteri Kela, Mário Costa, Kari Leppänen, Riku Jäntti

Proceedings of the 88th IEEE Vehicular Technology Conference, 2018

Wireless Backhauling for Energy Harvesting Ultra-Dense Networks.

Soheil Rostami, Kari Heiska, Oleksandr Puchko, George P. Koudouridis, Kari Leppänen, Mikko Valkama

Proceedings of the 29th IEEE Annual International Symposium on Personal, 2018

Dynamic Beam Selection for Beam-RSRP Based Direction Finding in mmW 5G Networks.

Elizaveta Rastorgueva-Foi, Mário Costa, Mike Koivisto, Kari Leppänen, Mikko Valkama

Proceedings of the 2018 International Conference on Indoor Positioning and Indoor Navigation, 2018

Localization and Tracking in mmWave Radio Networks using Beam-Based DoD Measurements.

Elizaveta Rastorgueva-Foi, Mike Koivisto, Mikko Valkama, Mário Costa, Kari Leppänen

Proceedings of the 8th International Conference on Localization and GNSS, 2018

Robust Pre-Grant Signaling for Energy-Efficient 5G and beyond Mobile Devices.

Soheil Rostami, Kari Heiska, Oleksandr Puchko, Kari Leppänen, Mikko Valkama

Proceedings of the 2018 IEEE International Conference on Communications, 2018

Novel Wake-Up Signaling for Enhanced Energy-Efficiency of 5G and beyond Mobile Devices.

Soheil Rostami, Kari Heiska, Oleksandr Puchko, Jukka Talvitie, Kari Leppänen, Mikko Valkama

Proceedings of the IEEE Global Communications Conference, 2018

User Positioning in mmW 5G Networks Using Beam-RSRP Measurements and Kalman Filtering.

Elizaveta Rastorgueva-Foi, Mário Costa, Mike Koivisto, Kari Leppänen, Mikko Valkama

Proceedings of the 21st International Conference on Information Fusion, 2018

Beam-based Device Positioning in mmWave 5G Systems under Orientation Uncertainties.

Elizaveta Rastorgueva-Foi, Mário Costa, Mike Koivisto, Jukka Talvitie, Kari Leppänen, Mikko Valkama

Proceedings of the 52nd Asilomar Conference on Signals, Systems, and Computers, 2018

Modeling and Analysis of Dynamic Pilot Scheduling scheme for 5G Ultra-Dense Network.

Estifanos Yohannes Menta, Kalle Ruttik, Riku Jäntti, Petteri Kela, Kari Leppänen

Proceedings of the IEEE 5G World Forum, 2018

User Localization Enabled Ultra-dense Network Testbed.

Nicolas Malm, Liang Zhou, Estifanos Yohannes Menta, Kalle Ruttik, Riku Jäntti, Olav Tirkkonen, Mário Costa, Kari Leppänen

Proceedings of the IEEE 5G World Forum, 2018

2017

Joint Device Positioning and Clock Synchronization in 5G Ultra-Dense Networks.

Mike Koivisto, Mário Costa, Janis Werner, Kari Heiska, Jukka Talvitie, Kari Leppänen, Visa Koivunen, Mikko Valkama

IEEE Trans. Wirel. Commun., 2017

High-Efficiency Device Positioning and Location-Aware Communications in Dense 5G Networks.

Mike Koivisto, Aki Hakkarainen, Mário Costa, Petteri Kela, Kari Leppänen, Mikko Valkama

IEEE Commun. Mag., 2017

Continuous device positioning and synchronization in 5g dense networks with skewed clocks.

Mike Koivisto, Aki Hakkarainen, Mário Costa, Kari Leppänen, Mikko Valkama

Proceedings of the 18th IEEE International Workshop on Signal Processing Advances in Wireless Communications, 2017

Continuous high-accuracy radio positioning of cars in ultra-dense 5G networks.

Mike Koivisto, Aki Hakkarainen, Mário Costa, Jukka Talvitie, Kari Heiska, Kari Leppänen, Mikko Valkama

Proceedings of the 13th International Wireless Communications and Mobile Computing Conference, 2017

Connectionless access for massive machine type communications in ultra-dense networks.

Petteri Kela, Henrik Lundqvist, Mário Costa, Kari Leppänen, Riku Jäntti

Proceedings of the IEEE International Conference on Communications, 2017

Location-aware beamformed downlink control channel for ultra-dense networks.

Petteri Kela, Mário Costa, Kari Leppänen, Riku Jäntti

Proceedings of the IEEE Conference on Standards for Communications and Networking, 2017

2016

Flexible Backhauling With Massive MIMO for Ultra-Dense Networks.

Petteri Kela, Mário Costa, Jussi Turkka, Kari Leppänen, Riku Natti

IEEE Access, 2016

Millimetre wave backhaul/fronthaul deployments for ultra-dense outdoor small cells.

Jialu Lun, David Grace, Alister G. Burr, Yunbo Han, Kari Leppänen, Tao Cai

Proceedings of the IEEE Wireless Communications and Networking Conference, 2016

Location Based Beamforming in 5G Ultra-Dense Networks.

Petteri Kela, Mário Costa, Jussi Turkka, Mike Koivisto, Janis Werner, Aki Hakkarainen, Mikko Valkama, Riku Jäntti, Kari Leppänen

Proceedings of the IEEE 84th Vehicular Technology Conference, 2016

Uplink reference signals enabling user-transparent mobility in ultra dense networks.

Xavier Gelabert, Christer Qvarfordt, Mário Costa, Petteri Kela, Kari Leppänen

Proceedings of the 27th IEEE Annual International Symposium on Personal, 2016

Supporting mobility in 5G: A comparison between massive MIMO and continuous ultra dense networks.

Petteri Kela, Xavier Gelabert, Jussi Turkka, Mário Costa, Kari Heiska, Kari Leppänen, Christer Qvarfordt

Proceedings of the 2016 IEEE International Conference on Communications, 2016

Joint 3D Positioning and Network Synchronization in 5G Ultra-Dense Networks Using UKF and EKF.

Mike Koivisto, Mário Costa, Aki Hakkarainen, Kari Leppänen, Mikko Valkama

Proceedings of the 2016 IEEE Globecom Workshops, Washington, DC, USA, December 4-8, 2016, 2016

2015

A Novel Radio Frame Structure for 5G Dense Outdoor Radio Access Networks.

Petteri Kela, Mário Costa, Jussi Salmi, Kari Leppänen, Jussi Turkka, Tuomas Hiltunen, Michal Hronec

Proceedings of the IEEE 81st Vehicular Technology Conference, 2015

High-Efficiency Device Localization in 5G Ultra-Dense Networks: Prospects and Enabling Technologies.

Aki Hakkarainen, Janis Werner, Mário Costa, Kari Leppänen, Mikko Valkama

Proceedings of the IEEE 82nd Vehicular Technology Conference, 2015

Joint User Node Positioning and Clock Offset Estimation in 5G Ultra-Dense Networks.

Janis Werner, Mário Costa, Aki Hakkarainen, Kari Leppänen, Mikko Valkama

Proceedings of the 2015 IEEE Global Communications Conference, 2015

2014

Seamless handover in 802.11 with Automatic Power Save Delivery.

Fernando Valdenebro Gonzalez, Henrik Lundqvist, Kari Leppänen

Proceedings of the 19th IEEE International Workshop on Computer Aided Modeling and Design of Communication Links and Networks, 2014

2009

Awareness networking in wireless environments.

Ari Ahtiainen, Kari Kalliojärvi, Mika Kasslin, Kari Leppänen, Andreas Richter, Päivi Ruuska, Carl Wijting

IEEE Veh. Technol. Mag., 2009

2008

Workflow Automation for System Architecting.

Markku Turunen, Kari Leppänen, Sari Leppänen

Proceedings of the ENASE 2008, 2008

2007

A Modelling Method for Rigorous and Automated Design of Large-Scale Industrial Systems.

Kari Leppänen, Sari Leppänen, Markku Turunen

Proceedings of the Model Driven Engineering Languages and Systems, 2007