Optimized Design of Decimator for Alias Removal in Multirate DSP Applications
نویسندگان
چکیده
Decimator is an important sampling device used for multi-rate signal processing in wireless communication systems. In this paper optimized decimator has been presented to improve the implementation complexity. The proposed decimator is implemented using Matlab as standard FIR, Half Band FIR and Nyquist FIR by using the multistage design techniques. The performance of different decimator designs is compared in terms of error and hardware requirements. The results show that the performance of all designs is almost identical but their implementation cost varies greatly in terms of hardware requirements. The hardware saving of 49% to 84% can be achieved by using multistage Nyquist decimator design. Key-Words: DSP, Decimator, FIR, Multirate, NTSC, PAL
منابع مشابه
Optimization of Multirate Polyphase Decimator using MCM and Digit Serial Architecture
A Paper Presents Optimization Technique of Multirate Polyphase Decimator. Many efficient algorithms and architectures developed for the design of low complexity, bit parallel Multiple Constant Multiplications operation which dominates the complexity of DSP systems. However, major drawbacks of present approaches are either two costly or not efficient enough. On the other hand, MCM and digit-seri...
متن کاملTo Develop and Implement Low Power, High Speed VLSI for Processing Signals using Multirate Techniques
Abstract:Multirate technique is necessary for systems with different input and output sampling rates. Recent advances in mobile computing and communication applications demand low power and high speed VLSI DSP systems [4]. This Paper presents Multirate modules used for filtering to provide signal processing in wireless communication system. Many architecture developed for the design of low comp...
متن کاملMultistage Implementation of Narrowband LPF by Decimator in Multirate DSP Application
Decimator is an important sampling device used for multi-rate signal processing in wireless communication systems. Multirate systems have traditionally played the important role in compression for contemporary communication application.In this paper it demonstrated that a multistage implementation of sampling rate conversion often provides for a more efficient realization, especially when filte...
متن کاملDesign and Implementation of Digital Demodulator for Frequency Modulated CW Radar (RESEARCH NOTE)
Radar Signal Processing has been an interesting area of research for realization of programmable digital signal processor using VLSI design techniques. Digital Signal Processing (DSP) algorithms have been an integral design methodology for implementation of high speed application specific real-time systems especially for high resolution radar. CORDIC algorithm, in recent times, is turned out to...
متن کاملInteractive SC multirate compiler applied to multistage decimator design
This paper proposes an interactive architecture compiler for SC multirate circuits that allows the automated design from the frequency specifications to the building block implementation, applied to the design and synthesis of multistage SC decimators. The compiler provides a library of different topologies that comprises a few independent multi-decimation building blocks. New building blocks d...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2010