Application design and simulation of HB decimation FIR filters
Jing Wang · Journal of Dalian Maritime University · 2004
This article introduces the specific properties and the application in GMDSS (Global Maritime Distress and Safety System) software radio receiver with regard to HB (Half-band) decimation filter that is an efficient digital decimation filter. The design and simulation of HB decimation FIR (Finite Impulse Response) filters are realized by using MATLAB and the IDE (Integrated Development Environment) CCS (Code Compose Studio) software of TMS320C54x DSP (Digital Signal Processor). The simulated results show that HB decimation filters which can greatly reduce the amount of operations and memories and are advantageous to the real-time implementation of filtering are suited for the first and middle of anti-aliasing decimation filters, but aren't suited for the last stages.