A Comparative Study of Pipelining Techniques for Recursive Filter Implemented in FPGA
Ayesha Firdous · 2014
This paper presents different pipelining approach for higher order recursive digital filter. The performance of the filter is increased by pipelining the filter. Clustered look-ahead, scattered look-ahead pipelining methods and implementation of IIR filter in FPGA are analyzed. Clustered look-ahead pipeline is not always stable. To achieve a stable pipeline filter scattered look-ahead pipelining is used. The second order all pole recursive filter is considered and 3-level pipelined transfer function is obtained using clustered look-ahead and scattered look-ahead pipelining techniques. The filter is implemented in direct form-I structure.