Efficient Implementation of an All-Adder Multiplier-Free Decimation and Compensation Filter
AN Jian-ping · Transactions of Beijing Institute of Technology · 2008
A novel algorithm on multiplier-free finite impulse response filter(FIR) is presented,which can be efficiently implemented to compensate the cascade integrator-comb filter passband ripple.The multiplier-free architecture is achieved by a power-of-2 digital to approximately represent the compensation filter coefficients.With this representation,multiply operation is replaced with a shift operation,which can be efficiently hardware implemented.Simulation results proved that the coefficients-approximate filter can well reach the demand of CIC compensation filter.