Abstract
In this article, we optimize packet length for cooperative systems. Packet length optimization allows to increase data rates. Our analysis is valid for dual hop and multihop relaying. Two adaptation protocols are studied where the adaptation of packet andModulation and Coding Scheme (MCS) are made with respect to Average Signal to Noise Ratio (ASNR) or instantaneous SNR (ISNR). Results show that packet length optimization allows 1.5-2.5 dB gain.