Delay and Power Efficient FIR Architecture for Noise Suppression of EOG Signal

Modified FIR filter with Canonical signed digit (CSD) technique for de-noising the Electro-Oculography (EOG) signal was proposed. To remove the noise in EOG signal an enhanced 16-bit FIR filter was used. The proposed FIR architecture uses CSD based multipliers, unlike the conventional shift-add the proposed architecture provide greater improvement in power and delay. CSD is used in order to reduce the design complexity of the multiplication by representing the filter coefficients in CSD format. A dipole was formed between the cornea and retina in an eye, resulting in voltage difference with occurrence of eye movement, which in turn generates an electrical signal. These signals are called as EOG and are useful in many medical and bioelectrical applications.