71 citations · 162 across the 6 of their papers we have counts for
6 papers
Level Crossing Rate and Average Fade Duration of the Multihop Rayleigh Fading Channel
Zoran Hadzi-Velkov, Nikola Zlatanov, George K. Karagiannidis
We present a novel analytical framework for the evaluation of important second order statistical parameters, as the level crossing rate (LCR) and the average fade duration (AFD) of…
On the Second Order Statistics of the Multihop Rayleigh Fading Channel
Zoran Hadzi-Velkov, Nikola Zlatanov, George K. Karagiannidis
Second order statistics provides a dynamic representation of a fading channel and plays an important role in the evaluation and design of the wireless communication systems. In thi…
Level Crossing Rate and Average Fade Duration of the Double Nakagami-m Random Process and Application in MIMO Keyhole Fading Channels
Nikola Zlatanov, Zoran Hadzi-Velkov, George K. Karagiannidis
We present novel exact expressions and accurate closed-form approximations for the level crossing rate (LCR) and the average fade duration (AFD) of the double Nakagami-m random pro…
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…
On the Distribution of the Sum of Gamma-Gamma Variates and Applications in RF and Optical Wireless Communications
Nestor D. Chatzidiamantis, George K. Karagiannidis
The Gamma-Gamma (GG) distribution has recently attracted the interest within the research community due to its involvement in various communication systems. In the context of RF wi…
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…