86 citations · 183 across the 6 of their papers we have counts for
7 papers
Spatio-Temporal Scheduling Prediction Under Backhaul Delay for Resilient Coordinated Beamforming
Prashant Kumar Singh, Shubham Vaishnav, Ahmet Hasim Gökceoglu +1
Coordinated beamforming in distributed 5G networks relies on the timely exchange of inter-cell scheduling information, but backhaul latency makes this information stale. Even a sin…
Scalable Multivariate Fronthaul Quantization for Cell-Free Massive MIMO
Sangwoo Park, Ahmet Hasim Gokceoglu, Li Wang +1
The conventional approach to the fronthaul design for cell-free massive MIMO system follows the compress-and-precode (CP) paradigm. Accordingly, encoded bits and precoding coeffici…
Machine Learning-based Methods for Reconfigurable Antenna Mode Selection in MIMO Systems
Yasaman Abdollahian, Ehsan Tohidi, Martin Kasparick +3
MIMO technology has enabled spatial multiple access and has provided a higher system spectral efficiency (SE). However, this technology has some drawbacks, such as the high number…
MIMO Systems with Reconfigurable Antennas: Joint Channel Estimation and Mode Selection
Fariba Armandoust, Ehsan Tohidi, Martin Kasparick +3
Reconfigurable antennas (RAs) are a promising technology to enhance the capacity and coverage of wireless communication systems. However, RA systems have two major challenges: (i)…
Estimation and Mitigation of Channel Non-Reciprocity in Massive MIMO
Orod Raeesi, Ahmet Gokceoglu, Mikko Valkama
Time-division duplex (TDD) based massive MIMO systems rely on the reciprocity of the wireless propagation channels when calculating the downlink precoders based on uplink pilots. H…
Spatio-Temporal Waveform Design for Multi-user Massive MIMO Downlink with 1-bit Receivers
Ahmet Gokceoglu, Emil Bjornson, Erik Larsson +1
Internet-of-Things (IoT) refers to a high-density network of low-cost low-bitrate terminals and sensors where also low energy consumption is one central feature. As the power-budge…
Performance Analysis of Multi-User Massive MIMO Downlink under Channel Non-Reciprocity and Imperfect CSI
Orod Raeesi, Ahmet Gokceoglu, Yaning Zou +2
This paper analyzes the performance of linearly precoded time division duplex based multi-user massive MIMO downlink system under joint impacts of channel non-reciprocity (NRC) and…