Level Crossing Rate of Macro-diversity System with Two Micro-diversity SC Receivers over Correlated Gamma Shadowed α–µ Multipath Fading Channels

ABSTRACT

In this article, macro-diversity structure with macro-diversity selection combining (SC) receiver and two micro-diversity SC receivers operating over correlated shadowed multipath fading channel are analysed. Received signal is subjected simultaneously to α–µ short-term fading and gamma long-term fading (shadowing) resulting in system performance degradation. Macro-diversity SC receiver aims to reduce gamma shadowing effect while micro-diversity SC receivers aim to mitigate α–μ small-scale multipath fading effects. Useful infinite series expressions for the second-order statistical measure such as level crossing rate (LCR) of macro-diversity SC receiver output signal is efficiently derived. Numerical results are presented to examine the influence of various gamma shadowing and α–µ multipath fading parameters on LCR of the proposed system.

KEYWORDS:

• Level crossing rate (LCR)
• macro-diversity
• micro-diversity
• multipath fading
• shadowing
• α–µ distribution

Additional information

Notes on contributors

Danijel B. Djosic

Danijel B. Djosic was born in Pristina, Serbia, in 1983. He graduated at the Faculty of Mathematics and Natural Sciences in the area of informatics, from University of Pristina, Serbia, in 2008. Currently, he is at the final year of PhD studies at the Faculty of Electronic Engineering in the area of telecommunications. His major research interests include wireless mobile and computer networks software applications. Currently, he works as an assistant at the Department of Informatics, Faculty of Natural Science and Mathematics, University of Pristina.

Email: [email protected]

Dusan M. Stefanovic

Dusan M. Stefanovic, received his MS and PhD degrees in Telecommunication from Faculty of Electronic Engineering, University of Nis, Serbia, in 2005 and 2012, respectively. He is currently a professor at the College of Applied Technical Sciences in Nis, Serbia. His major research interests include wireless and optical communications, mobile and computer networks. Prof. Stefanovic is also certified with CISCO and Microsoft certifications such as CCNP and MCSE.

Email: [email protected]

Caslav M. Stefanovic

Caslav M. Stefanovic, is currently a PhD candidate at Faculty of Electronic Engineering, University of Nis, Serbia. At the moment, he is working as an assistant at the Faculty of Natural Sciences and Mathematics, Department of Informatics, University of Pristina at Kosovska Mitrovica, Serbia. He was a visiting student to the Department of Physics at University of Hamburg in 2009 and Department of Electrotechnics at Technical University in Berlin from 2010 to 2011. His research interests in the field of mobile and multichannel communications include statistical characterisation and modelling of fading channels, performance analysis of diversity combining techniques and outage analysis of multiuser wireless systems subjected to interference.

Email: [email protected]