Th. Antonakopoulos, K. Berberidis and V. Makios:

Computationally Efficient Method for Tone Detection in Noisy Channels

International Journal of Electronics, Vol. 74, No. 6, 1993, pp. 885-900.

Abstract: A simple, efficient and reliable method is proposed for tone detection in noisy channels. The method is based on the fact that the information contained in a generated sequence of samples mainly depends on the relation between the sampling rate and the analogue signal bandwidth. This relation can also be used to implement filtering functions in frequency detection systems. The method is explicitly analysed and detailed mathematical formulae are derived for its basic parameters. The method has been implemented in vehicle mounted pagers and its implementation is described in detail. The main advantages of the proposed method are its simplicity, its requirements for low processing power due to its computational efficiency and its implementability using conventional microcontrollers.

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