Improving Energy Efficiency of Relay Systems Using Dual-Polarized Antenna
Maja Delibasic · Journal of Green Engineering · 2013
In this paper we study the bit error analyses of decode-and-forward (DF) relay system over Ricean fading channels, implementing polarization diversity at the relay node. Two correlated and non-identical Ricean fading channels are used to describe source to relay link, and maximal ratio combining (MRC) of the received signals is performed at the relay. Communication between the relay and destination is also assumed to be over Ricean fading channel. The performances of the considered system are compared to classic DF relay system with single antenna relay, in order to determine the level of BER (Bit Error Rate) improvement. A significant decrease of the average SNR per hop in order to achieve the same BER performance is realized using dual diversity at relay, despite certain levels of correlation and power unbalance between the diversity branches, which can further reduce the needed transmit power.