Low adaptation delay in fixed point LMS adaptive filter for DSP applications

The Partial Product Generator (PPG) is used to achieve lower adaptation delay and area delay power efficient implementation. A pipelining operation is constructed in two combinational blocks. It has two structures (1) Error Computation Block and (2) Weight Update block. The number of pipelines along with the area, delay and energy consumption is reduced using an adaptive filter. In LMS (Least Mean Square) adaptive filter has less area delay product and less energy product compare with previous systolic structures for various filter length. In LMS algorithm pipelined implementation is not allowed because of the presence of recursive filter so it modified from delayed LMS to allow pipelined implementation to get better performance, area, and delay.