101 citations · 363 across the 33 of their papers we have counts for
4 papers · 1 filter
Siamese Neural Networks for Wireless Positioning and Channel Charting
Eric Lei, Oscar Castañeda, Olav Tirkkonen +2
Neural networks have been proposed recently for positioning and channel charting of user equipments (UEs) in wireless systems. Both of these approaches process channel state inform…
Improving Channel Charting with Representation-Constrained Autoencoders
Pengzhi Huang, Oscar Castañeda, Emre Gönültaş +4
Channel charting (CC) has been proposed recently to enable logical positioning of user equipments (UEs) in the neighborhood of a multi-antenna base-station solely from channel-stat…
Code Design Principles for Ultra-Reliable Random Access with Preassigned Patterns
Christopher Boyd, Roope Vehkalahti, Olav Tirkkonen +1
We study medium access control layer random access under the assumption that the receiver can perform successive interference cancellation, without feedback. During recent years, a…
Non-Orthogonal Contention-Based Access for URLLC Devices with Frequency Diversity
Christopher Boyd, Radosław Kotaba, Olav Tirkkonen +1
We study coded multichannel random access schemes for ultra-reliable low-latency uplink transmissions. We concentrate on non-orthogonal access in the frequency domain, where users…