Effective Capacity of Fixed-Gain AF Relays with Relay Selection

In this paper, effective capacity of fixed-gain, amplify-and-forward (AF) relays is studied. For more improvement and complexity reduction, relay selection based on thesource-relay link is proposed. For this purpose, a closed-form solution for the effective capacity of the fixed-gain AF relays, at high signal to noise ratio (SNR) assumption, is extracted.

Keywords:

Effective capacity , fixed-gain amplify-andforward relays , quality-of-service