On the channel error count method with convolution code for adaptive transmission

Channel error rate is an important performance measure of digital communication system. We usually use the signal-to-noise ratio (SNR) of the decision statistic at the demodulator output to evaluate this quantity. For wireless transmission, the channel is time varying and highly random, hence an accurate channel error rate estimate at the demodulator output is hard to achieve. In order to maintain acceptable performance at the receiver end, adaptive transmission based on the instantaneous channel error rate is necessary. In this paper, we evaluate the effectiveness of a recently proposed channel error counts method to estimate the channel error rate used for adaptive transmission.