Performance of Cooperative Relaying Communications
Sirmayanti Sirmayanti · 2008
Recently, wireless relaying techniques have received significant research interest due to their possible use in future cellular, ad hoc and military communication networks. In this thesis, we study the performance of cooperative transmission between a source terminal and a destination terminal using a relaying model. We first evaluate the statistical behavior of two multipath fading channels: Rayleigh fading and Rician fading and study the probability density functions of the fading amplitude and the instantaneous signal-to-noise ratio (SNR) per symbol of the channel. Additionally, we explore the density function of the end-to-end SNR in mixed Rayleigh/Rician fixed gain relay channels. Next, we present both simulation and theoretical bit error rate performance of two relaying methods: Amplify-and-Forward (AF) and Decode-and-Forward (DF). Moreover, we investigate the BER performance of these relaying schemes under two diversity combining systems, namely, Selection Combining and Maximal-Ratio Combining.