%0 Journal Article %T Amplify and Forward Relaying Systems for Collocated Antennas %A Mahmud Al-Naser %A Salem Salamah %J Int'l J. of Communications, Network and System Sciences %P 235-242 %@ 1913-3723 %D 2014 %I Scientific Research Publishing %R 10.4236/ijcns.2014.77025 %X

Cooperative relaying for a system that consists of different configurations of a collocated and uniform linear antenna is analyzed. The amplify-and-forward relaying (AF) and selection combining (S-AF) schemes based on maximal ratio combining (MRC) method for single- and multi-relay are investigated. In this study, the bit-error-rate (BER) expression for collocated and uniform linear antenna in cooperative communication system over flat Rayleigh fading channel is derived. The result for 3-element collocated antennas (tripole) shows improvement in performance over dual-polarized antennas. Also increasing number of tripole antenna does not add improvement.

%K Cooperative Communications %K Fading Channels %K Relay %K Antennas %U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=48123