Abstract:

In current communications, error probability estimation mainly relies on Monte Carlo simulation. A method based on the radius of decision region to estimate the word error rate (WER) is presented. The Bernoulli experiment samples is replaced with the samples of radius, that can reduce the required number of samples due to the more information provided by radii. Meanwhile, the geometry of decision region is of little to do with the signal to noise ratio (SNR), so the same group of radii can be used to estimate the different error probability at any SNR without repeated measure in different groups of radii under every SNR.

Key words: word error rate, decision region, radius of decision region, Monte Carlo simulation