The Algorithm,Simulation and Realization of CVSD

Because of the poor currency,agility and expansibility of specific CVSDs,it is necessary to realize CVSD on FPGA.Through analyzing the codedecode principle of CVSD,the CVSD algorithm is proposed and the codedecode simulation flow charts are drawn.Due to the preferable character of Hanning window,the lowpass filter adopts the Hanning window and its simulation of the algorithm in MATLAB.In according with the result of the simulation,we know that the quantified phase continuously changes with the mean value of the slope in the signal,which ideally approaches to the input signal.At last,CVSD is implemented in FPGA.