Title :
Frequency-hopped ARQ for wireless network data services
Author :
Gao, Nan ; Morgera, Salvatore D.
Author_Institution :
Dept. of Electr. Eng., McGill Univ., Montreal, Que., Canada
fDate :
10/1/1994 12:00:00 AM
Abstract :
The throughput efficiency and probability of undetected error of automatic-repeat-request (ARQ) protocols employing slow frequency hopping over Gilbert-Elliott (1960, 1963) fading channels are investigated. Throughput efficiency formulas for the three basic ARQ schemes, “stop-and-wait” (SW), “go-back-N” (GBN), and “selective-repeat” (SR), are obtained, and the improvement in throughput efficiency due to slow frequency hopping is examined. Results are also presented on the problem of determining the number of carriers used for frequency hopping so as to minimize the effect of fading channel memory and, therefore, optimize system performance. This work has application to TDMA architectures and packet data services for third generation wireless networks, where projected data service requirements call for error rates on the order of 10-9 , and the multiple service, multiple access environment demands that the delay for any service be minimized
Keywords :
data communication systems; fading; frequency agility; mobile radio systems; packet switching; protocols; radiowave propagation; spread spectrum communication; telecommunication channels; time division multiple access; TDMA architectures; automatic-repeat-request protocols; carriers; error rates; fading channel memory; fading channels; frequency-hopped ARQ; multiple access environment; packet data services; selective-repeat ARQ; slow frequency hopping; stop-and-wait ARQ; system performance; throughput efficiency; undetected error probability; wireless network data services; Automatic repeat request; Error analysis; Fading; Frequency; Protocols; Strontium; System performance; Throughput; Time division multiple access; Wireless networks;
Journal_Title :
Selected Areas in Communications, IEEE Journal on
