Optimize FIR digital filter based on CSD arithmetic

The motive of digital filter research is that it is becoming a major method for digital signal processing.The performance of digital system is determined by multiplication.A set of high-efficient multipliers for FIR,based on CSD coding is presented,in which various optimized technique for digital filter is used.The experimental results show that CSD arithmetic improves the performance of multiplication,and reduces the use of resources.The results also show that CSD arithmetic only requires 26.7% of the LEs of 2C arithmetic and 40.7% of LEs of DA arithmetic in the optimal condition.