116 citations · 124 across the 7 of their papers we have counts for
3 papers · 1 filter
Self-Reference Ultra-Wideband Systems
Athanasios S. Lioumpas
Towards employing low complexity transceivers for signal reception in Ultra-Wideband (UWB) systems, Transmitted Reference (TR) and Differential TR (DTR) schemes have attracted rese…
Selective Cooperative Relaying over Time-Varying Channels
Diomidis S. Michalopoulos, Athanasios S. Lioumpas, George K. Karagiannidis +1
In selective cooperative relaying only a single relay out of the set of available relays is activated, hence the available power and bandwidth resources are efficiently utilized. H…
Variable-Rate M-PSK Communications without Channel Amplitude Estimation
Athanasios S. Lioumpas, George K. Karagiannidis
Channel estimation at the receiver side is essential to adaptive modulation schemes, prohibiting low complexity systems from using variable rate and/or variable power transmissions…