Title :
Comparison of two ARO protocols in a Rayleigh fading channel
Author_Institution :
Bellcore, Red Bank, NJ
Abstract :
Go-back-n (GBN) and selective repeat (SR) protocols for automatic repeat request (ARQ) protocols are compared in a frequency-nonselective Rayleigh fading channel. The channel coding used is assumed to be for error detection only; therefore, the throughput reduction due to coding is smaller than if the coding were used for error correction. Only practical ARQ protocols that can be implemented in real-time applications with finite-buffering capability are considered. Protocols implemented in software are used in a computer-simulated fading channel to study the throughput of these protocols for data communications. It is found that SR is significantly superior to GBN when fading rate is high; this advantage decreases as fading becomes slower. Error detection combined with ARQ and diversity selection can provide reliable data communications in a Rayleigh fading channel
Keywords :
data communication systems; encoding; error detection codes; fading; protocols; radio systems; telecommunication channels; ARO protocols; Rayleigh fading channel; channel coding; computer-simulated fading channel; data communications; error detection; finite-buffering; frequency nonselective fading; go-back-N protocol; real-time applications; selective repeat protocol; software; throughput reduction; Automatic repeat request; Channel coding; Computer errors; Data communication; Fading; Frequency; Protocols; Rayleigh channels; Strontium; Throughput;
Conference_Titel :
Vehicular Technology Conference, 1990 IEEE 40th
Conference_Location :
Orlando, FL
DOI :
10.1109/VETEC.1990.110386
