Method of noise reduction based on SVD and its application in digital receiver front-end

A method of noise reduction based on singular value decomposition (SVD) is applied to digital receiver front-end. To determine the optimal de-noising order, a new method is presented according to the curvature of the increment of singular entropy. Verification tests are taken using the simulation signal and the actual output signal from the receiver, respectively. The results show that this method has obviously reduction of the background noise and can guarantee the integrity of the information contained in the signal after noise reduction; in other words, the method can effectively improve the signal-to-noise ratio(SNR) of the receiver front-end.