An Algorithm for Improving the Signal to Noise Ratio of Noisy Complex Sinusoidal Signals Using Sum of Higher-Order Statistics

Teruyuki HARA  Atsushi OKAMURA  Tetsuo KIRIMOTO  

IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E81-A   No.9   pp.1955-1957
Publication Date: 1998/09/25
Online ISSN: 
Print ISSN: 0916-8508
Type of Manuscript: LETTER
Category: Digital Signal Processing
higher-order statistics,  fourth-order cumulants,  signal detection,  signal to noise ratio,  

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This letter presents a new algorithm for improving the Signal to Noise Ratio (SNR) of complex sinusoidal signals contaminated by additive Gaussian noises using sum of Higher-Order Statistics (HOS). We conduct some computer simulations to show that the proposed algorithm can improve the SNR more than 7 dB compared with the conventional coherent integration when the SNR of the input signal is -10 dB.