96 citations · 446 across the 36 of their papers we have counts for
39 papers
Rateless Coded Blockchain for Dynamic IoT Networks
Changlin Yang, Alexei Ashikhmin, Xiaodong Wang +1
A key constraint that limits the implementation of blockchain in Internet of Things (IoT) is its large storage requirement resulting from the fact that each blockchain node has to…
Smart Hybrid Beamforming and Pilot Assignment for 6G Cell-Free Massive MIMO
Carles Diaz-Vilor, Alexei Ashikhmin, Hong Yang
This paper investigates Cell-Free massive MIMO networks, where each access point (AP) is equipped with a hybrid transceiver, reducing the complexity and cost compared to a fully di…
Cell-Free Massive MIMO with Low-Complexity Hybrid Beamforming
Abbas Khalili, Alexei Ashikhmin, Hong Yang
Cell-Free Massive Multiple-input Multiple-output (mMIMO) consists of many access points (APs) in a coverage area that jointly serve the users. These systems can significantly reduc…
Two-Stage Channel Estimation Approach for Cell-Free IoT With Massive Random Access
Xinhua Wang, Alexei Ashikhmin, Zhicheng Dong +1
We investigate the activity detection and channel estimation issues for cell-free Internet of Things (IoT) networks with massive random access. In each time slot, only partial devi…
Multi-point Coordination in Massive MIMO Systems with Sectorized Antennas
Shahram Shahsavari, Mehrdad Nosrati, Parisa Hassanzadeh +3
Non-cooperative cellular massive MIMO, combined with power control, is known to lead to significant improvements in per-user throughput compared with conventional LTE technology. I…
Can Massive MIMO Support URLLC?
Hangsong Yan, Alexei Ashikhmin, Hong Yang
We investigate the feasibility of using Massive MIMO to support URLLC in both coherence interval based and 3GPP compliant pilot settings. We consider grant-free uplink transmission…