Abstract
Optimal detection of a multitone signal in Gaussian noise and its relation to bispectral analysis are addressed. Using hypothesis testing methods the optimal detector of a multitone signal with random phases and (known) harmonic relations is derived. It is shown that the optimal receiver consists of a power spectrum block and a block which deals with the phase coupling. Under a low signal-to-noise ratio (SNR) assumption, this extra block is closely related to a processor based on the bispectral analysis. Thus, a detector which is based on a superposition of the output of the conventional noncoherent detector and the bispectrum estimate of the input signal is a suboptimal one, approaching optimal performance in the low SNR case.
| Original language | English |
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| Pages (from-to) | 2391-2394 |
| Number of pages | 4 |
| Journal | Proceedings - ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing |
| Volume | 5 |
| State | Published - 1990 |
| Event | 1990 International Conference on Acoustics, Speech, and Signal Processing: Speech Processing 2, VLSI, Audio and Electroacoustics Part 2 (of 5) - Albuquerque, New Mexico, USA Duration: 3 Apr 1990 → 6 Apr 1990 |