Performance of Adaptive Modulation Scheme with Cooperative Diversity

A common technique that is also widely used in communication systems is the Adaptive Modulation (AM). In this technique the most appropriate type of modulation is selected in addition to size of the constellation depending on the Signal to Noise Ratio (SNR) measured at the receiver side. AM technique is employed within the systems of cooperative diversity in order to obtain throughput enhancement from SNR gain. The diversity is also considered another common technique that is employed in mitigating the fading effect. Time diversity methods are not able to be employed for channels of frequency non-selective and slow fading types. The AM and cooperative diversity techniques, which are considered two common and deployed algorithms in improving the wireless communication performance. This project investigated several studies that were introduced in the literature related to these two topics. The proposed methods, concepts, outcomes and considered conditions during the implementation or derivation were also discussed and compared. Each of the studies achieved a clear improvement within the wireless communication system upon considering several criteria, such as; throughput, SNR, SE and BER.