Abstract: Aiming at the deficiencies of sensitivity to time offset in a quasi-orthogonal time division multiplexing (QOTDM) system, this paper derives a formula for the sample error probability based on the separable features of the joint probability density function of independent variables, due to the statistical independence of samples and noise in the QOTDM system. Since the Modified Chernoff bound is significantly tigher than the Chernoff bound, the upper bound of sample error probability is also obtained, thus providing an efficient way to evaluate the sample error performance of the QOTDM systems.

Key words: quasi-orthogonal time division multiplexing, sample error probability, chernoff bound