Heuristic Optimization Techniques for the Design of Digital FIR High Pass Filter: A Comparison

This paper consists of design of digital FIR high pass filter using predator prey optimization and hybrid predator prey optimization (HPPO) technique. HPPO is a combination of predator prey optimization (PPO) and exploratory search where Predator prey optimization is a global search method and exploratory move is a local search method. Local stagnation is possible in PSO but there is no local stagnation in PPO because prey particles always try to attain suitable position to avoid predator effect. In exploratory move solution is fine tuned in local search space. The optimal filter design parameters can be obtained using HPPO method which improves the capability to explore and exploit the search space at local and global level. Results authenticate that HPPO method is better than PPO for the design of higher order high pass digital FIR filters. Keywords—High Pass (HP), Finite Impulse Response (FIR) Filter, Hybrid Predator Prey Optimization (HPPO), Predator Prey Optimization (PPO), Exploratory Move (EM)