PERFORMANCE EVALUATION OF ADAPTIVE ARRAY ANTENNAS IN COGNITIVE RELAY NETWORK

Circuits and Systems: An International Journal (CSIJ) ISSN : 2349 - 2171 Article Title: PERFORMANCE EVALUATION OF ADAPTIVE ARRAY ANTENNAS IN COGNITIVE RELAY NETWORK Eman Sadik1, Mona Shokair2, Abd Elmaged Sharshar3 and Said Elhalafawy ABSTRACT Adaptive Array Antennas (AAAs) are expected to play a key role in meeting the demands of the wireless communication systems of the future. AAAs in cognitive relay network is proposed to reduce the symbol error rate and improve the system performance. Many algorithms such as wiener solution and least mean square (LMS) will be explained to show how AAAs in cognitive relay network achieves this object. AAAs at different locations will be investigated under AWGN and Rayleigh fading channel. Moreover, enhancement the system performance by showing the effect of increasing the number of AAAs element at the relay node, increasing the source gain and decreasing the relay gain. In addition, increasing the rate adaptation and number of iterations in LMS algorithm has significant improvement in the system. KEYWORDS Adaptive Array Antennas, cognitive relay network and least mean square algorithm For More details please visit: http://airccse.com/csij/index.html Original Source URL: http://airccse.com/csij/papers/1414csij02.pd