Refinement of MIMO limited-feedback using second best codeword. - Karol Schober; Risto Wichman; Tommi Koivisto (PIMRC, 2009)

MIMO-OFDM Channel Estimation with Eigenbeamforming and User-Specific Reference Signals. - Karol Schober; Risto Wichman (VTC Spring, 2009)

Geodesical codebook design for precoded MIMO systems. - Karol Schober; Pekka Jänis; Risto Wichman (IEEE Commun. Lett., 2009)

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

Reference Signal Design for Flexible MIMO Operation in LTE-Advanced Downlink. - Tommi Koivisto; Karol Schober; Tero Kuosmanen; Timo Roman; Mihai Enescu (VTC Spring, 2010)

MIMO adaptive codebook for closely spaced antenna arrays. - Karol Schober; Risto Wichman; Tommi Koivisto (EUSIPCO, 2011)

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

Layer arrangement for single-user coordinated multi-point transmission. - Karol Schober; Risto Wichman; Timo Roman (CISS, 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)

MIMO adaptive codebook for cross-polarized antenna arrays. - Karol Schober; Mihai Enescu; Risto Wichman (PIMRC, 2013)

Improved User-Specific Channel Estimation Using Geodesical Interpolation at the Transmitter. - Karol Schober; Renaud-Alexandre Pitaval; Risto Wichman (IEEE Wirel. Commun. Lett., 2015)

CSI enhancement for multi-user superposed transmission using the second best feedback. - Karol Schober; Panu Lähdekorpi; Mikko Kokkonen; Mikko Mäenpää; Mihai Enescu (PIMRC, 2016)

Geodesical Refinement of MIMO Limited Feedback. - Karol Schober; Risto Wichman; Mihai Enescu (IEEE Trans. Commun., 2016)

Limited feedback and channel estimation for closed-loop MIMO systems. - Karol Schober (2016)

Impact of Bandwidth Part (BWP) Switching on 5G NR System Performance. - Fuad M. Abinader; Andrea Marcano; Karol Schober; Riikka Nurminen; Tero Henttonen; Hisashi Onozawa; Elena Virtej (5G World Forum, 2019)

5G NR Physical Downlink Control Channel: Design, Performance and Enhancements. - Volker Braun; Karol Schober; Esa Tiirola (WCNC, 2019)

Understanding the Heart of the 5G Air Interface: An Overview of Physical Downlink Control Channel for 5G New Radio (NR). - Kazuki Takeda; Huilin Xu; Taehyoung Kim; Karol Schober; Xingqin Lin (CoRR, 2019)

Understanding the Heart of the 5G Air Interface: An Overview of Physical Downlink Control Channel for 5G New Radio. - Kazuki Takeda; Huilin Xu; Taehyoung Kim; Karol Schober; Xingqin Lin (IEEE Commun. Stand. Mag., 2020)