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Protocol configuration and verification of an adaptive error control scheme over analog cellular networks

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4 Author(s)
Sato, T. ; OKI Electr. Ind. Co. Ltd., Tokyo, Japan ; Kawabe, M. ; Kato, T. ; Fukasawa, A.

A high-speed and error-free voiceband data communication method using a hybrid automatic repeat request (ARQ) protocol over an analog cellular system is described. The present method adopts an adaptive error control scheme. This error control scheme automatically selects the optimal error correction code according to circuit bit error rate (BER), so as to match it to the frequently changing mobile radio propagation path conditions. This method adopts multiframe rejection as a retransmission scheme for a high throughput efficiency on the burst error circuit. Actual field evaluation was made by mounting this protocol on a CCITT V.22 bis modem with a data transmission speed of 2400 b/s and a modulation method using 16 carrier states over the Advanced Mobile Phone Service (AMPS) in Atlanta, GA, verifying that data communications can be achieved with an average throughput efficiency of 70% over a radio channel having a BER up to 10-2

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Vehicular Technology, IEEE Transactions on  (Volume:41 ,  Issue: 1 )