2 papers
cs.IT2009
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…
cs.IT2009
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…