performance analysis of fir digital filter design technique and implementation
Mohd . Sayeeduddin Habeeb, Zeeshan Ahmad · 2014
The purpose of this study is to design and analyze a Finite Impulse Response (FIR) filter to program a Pre-modulation filter for avionic application. In recent times more development is taking place in digital signal processing field (DSP). In DSP applications, more concentration is to reduce order of the filter to achieve high speed and low power, which results in less hardware requirements. In this paper various FIR filter design techniques are used and compared with optimal design techniques. Optimization technique which is used to design filter is McClellan-Parks which is based upon Remez exchange algorithm. Finally codes of different filter structures are implemented on a Field Programmable Gated Array (FPGA) and there hardware requirements are compared. The popularity of digital signal processing has been increased due to the declining cost of general purpose computers and due to applications to specific hardware. The need of digital filtering method is growing due to many applications like telephony and data communications is moving to preferring digital. To model this complex system, some simulation techniques is needed. The hardware simulation is more reliable than software because speed provided by hardware simulation is good, whereas building the hardware for different models is so costly and time consuming when some changes are made. Therefore, by using programming logic a middle ground may be found. Such systems offer software and some or all hardware flexibility (3) at the shorter implementation cost. A digital filter is exactly represented in the frequency domain.