Power control in feedback communications over a fading channel. - Ilkka Saarinen; Aarne Mämmelä; Pertti Järvensivu; Keijo Ruotsalainen (IEEE Trans. Veh. Technol., 2001)

Space-time equalization using conjugate-gradient algorithm in WCDMA downlink. - Markku J. Heikkilä; Keijo Ruotsalainen; Jorma Lilleberg (PIMRC, 2002)

A novel design of unitary space-time constellations. - Yi Wu 006; Keijo Ruotsalainen; Markku J. Juntti (ICC, 2005)

Analysis of Minimum Hellinger Distance Identification for Digital Phase Modulation. - Kenta Umebayashi; Janne J. Lehtomäki; Keijo Ruotsalainen (ICC, 2006)

On the Solution of Scatter Density in Geometry-Based Channel Models. - Jyri Hämäläinen; Sami Savolainen; Risto Wichman; Keijo Ruotsalainen; Juha Ylitalo (IEEE Trans. Wirel. Commun., 2007)

Unitary Space-Time Constellation Design Based on the Chernoff Bound of the Pairwise Error Probability. - Yi Wu 006; Keijo Ruotsalainen; Markku J. Juntti (IEEE Trans. Inf. Theory, 2008)

Image Segmentation Using Diffusion Tracking Algorithm with Patch Oversampling. - Lassi Korhonen; Keijo Ruotsalainen (ICETE (Selected Papers), 2012)

Diffusion Tracking Algorithm for Image Segmentation. - Lassi Korhonen; Keijo Ruotsalainen (SIGMAP, 2012)

Wireless system for the continuous observation of whole-body vibration in heavy machinery. - Keijo Ruotsalainen; Taneli Rantaharju; Arto Partanen; Pentti Romppainen (IEEE Instrum. Meas. Mag., 2013)

Validation of 2D Force Measurement Roller Ski and Practical Application. - Shuang Zhao; Vesa Linnamo; Keijo Ruotsalainen; Stefan Lindinger; Timo Kananen; Petri Koponen; Olli Ohtonen (Sensors, 2022)

Propulsion Calculated by Force and Displacement of Center of Mass in Treadmill Cross-Country Skiing. - Shuang Zhao; Olli Ohtonen; Keijo Ruotsalainen; Lauri Kettunen; Stefan Lindinger; Caroline Göpfert; Vesa Linnamo (Sensors, 2022)