Title :
An efficient ARQ system for mobile communications
Author :
Kallel, S. ; Leung, C.
Author_Institution :
Dept. of Electr. Eng., British Columbia Univ., Vancouver, BC, Canada
Abstract :
Two modifications of an ARQ (automatic repeat request) scheme proposed by E.J. Weldon (IEEE Trans. on Comm., vol.COM-30, p.480-486, March 1982) for use in systems with limited receiver buffer is studied. Unlike Weldon´s scheme in which all erroneous data packets are discarded, the present schemes make use of copies of the data packet which may contain errors. A number of channel models are considered, namely a binary symmetric channel and a nonfading and a Rayleigh fading channel with additive white Gaussian noise. In all cases, it is found that the throughput can be substantially increased. Under poor channel conditions, the use of forward error correction can lead to further improvement
Keywords :
error correction codes; mobile radio systems; ARQ system; Rayleigh fading channel; additive white Gaussian noise; automatic repeat request; binary symmetric channel; channel models; data packet; forward error correction; limited receiver buffer; mobile communications; nonfading channel; throughput; Additive white noise; Automatic repeat request; Decoding; Fading; Forward error correction; Mobile communication; Rayleigh channels; Throughput; Transmitters; Welding;
Conference_Titel :
Vehicular Technology Conference, 1989, IEEE 39th
Conference_Location :
San Francisco, CA
DOI :
10.1109/VETEC.1989.40146
