Title :
A hybrid ARQ scheme with adaptive forward error correction for satellite communications
Author :
Shiozaki, Akira ; Okuno, Kiyoshi ; Suzuki, Katsufumi ; Segawa, Tetsuro
Author_Institution :
Fac. of Eng., Osaka Electro-Commun. Univ., Neyagawa, Japan
fDate :
4/1/1991 12:00:00 AM
Abstract :
A hybrid automatic-repeat-request system combined with adaptive forward error correction (ARQ/AFEC) which adaptively alters the error-correcting capability according to channel state using a nonsystematic Reed-Solomon code is presented. lt is shown that the system can alter the error-correcting capability by varying the number of information symbols fed to the decoder only, and not change the hardware of the encoder. Performance evaluations indicate that the ARQ/AFEC system has much higher frame efficiency than ARQ without AFEC for low-bit error rate and has high frame efficiency in a wide range of bit error rates
Keywords :
error correction codes; protocols; satellite relay systems; BER; adaptive forward error correction; bit error rates; channel state; decoder; encoder; frame efficiency; hybrid automatic-repeat-request system; information symbols; nonsystematic Reed-Solomon code; performance evaluations; protocol; satellite communications; Automatic repeat request; Bit error rate; Decoding; Error correction; Error correction codes; Forward error correction; Hardware; Protocols; Reed-Solomon codes; Satellite communication;
Journal_Title :
Communications, IEEE Transactions on
