Design of an adaptive coding and retransmission strategy for a multipath fading channel

Abstract

A high performance data communication system is designed using a 2.5 GHz radio with a data transmission rate of 6.312 Mbit/s and a 800 MHz radio with a data transmission rate of 4800 bit/s. To countermeasure both random bit and burst errors, Reed-Solomon (RS) codes are considered for the forward and reverse channels. The system reliability is improved by using an adaptive forward error correction (FEC) scheme in the forward channel and a conventional FEC scheme in the reverse channel. As a result, the stop-and-wait protocol is used to simplify the circuitry and avoid large buffers, and yet the system requirement can still be met. The proposed coding and retransmission strategy seems suitable for use in a severe multipath fading. >