A Go-Back-N Protocol for Mobile
Communications Giuliano Benelli · 1991
Mobile digital communication systems are gener- ally affected by severe noise and disturbances such as multipath fading and Doppler effects that degrade the reliability of the received information. Automatic-repeat-request (ARQ) tech- niques, which include the go-back-N (GBN) protocol, are widely used to improve the perfQrmance of digital communication systems. This paper describes a GBN protocol, with a buffer and memory at the receiver side, which offers low implementation complexity and a structure especially suited to mobile communi- cations. The optimization of the protocol parameters is deter- mined through numerical analysis. Performance is evaluated by computer simulation using a channel model suitable for mobile communications. The results show that the proposed ARQ scheme achieves higher performance than that of other ARQ protocols, and that at high error rates, its efficiency compares favorably with selective repeat protocols having an infinite buffer.