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Parity retransmission hybrid ARQ using rate 1/2 convolutional codes on a nonstationary channel
Ist Teil von
IEEE transactions on communications, 1989-07, Vol.37 (7), p.755-765
Ort / Verlag
Legacy CDMS: IEEE
Erscheinungsjahr
1989
Quelle
IEEE Electronic Library Online
Beschreibungen/Notizen
A parity retransmission hybrid automatic repeat request (ARQ) scheme is proposed which uses rate 1/2 convolutional codes and Viterbi decoding. A protocol is described which is capable of achieving higher throughputs than previously proposed parity retransmission schemes. The performance analysis is based on a two-state Markov model of a nonstationary channel. This model constitutes a first approximation to a nonstationary channel. The two-state channel model is used to analyze the throughput and undetected error probability of the protocol presented when the receiver has both an infinite and a finite buffer size. It is shown that the throughput improves as the channel becomes more bursty.< >