Multiplierless Implementation of Digital Colored Noise Generator
نویسندگان
چکیده
Colored noise can be generated by filtering of the white noise. It is a simple task. However, it becomes challenging if high operating speed of the generator is required. The realization of digital filter generally requires one multiplication per coefficient. Therefore, a high operating speed is achieved only with the cost of several generalpurpose multipliers. In this paper, a multiplierless realization of the colored noise generator is proposed. It is based on the filtering of 1-bit random signal by a finite impulse response filter. The design of the generator is described and its implementation is considered. Furthermore, an application is described in which the proposed generator is used in mitigation of undesired effects caused by nonlinearities in an analog to digital converter.
منابع مشابه
Design 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 کاملDecrease in Hardware Consumption and Quantization Noise of Digital Delta-Sigma Modulators and Implementation by VHDL
A new structure is presented for digital delta-sigma modulator (DDSM). Novel architecture decreases hardware consumption, output quantization noise and spurs in Comparison to previous architectures. In order to reduce the delay, power consumption and increase maximum working frequency, the pipelining technique and the carry skip adder are used. Simulation proposed architecture shows that the qu...
متن کاملDesign and Implementation of Digital Butterworth IIR filter using Xilinx System Generator for noise reduction in ECG Signal
Application Specific Integrated Circuits (ASICs) and Digital Signal Processors are generally used for implementing digital filters. Now days in the advances in technology leads to use of field programmable Gate Array (FPGA) for the implementation of Digital Filters. The Present paper deals with Design and implementation of digital IIR Butterworth filter using Xilinx System Generator. The Quanti...
متن کاملAnalog Multiplierless LMS Adaptive FIR Filter Structures
Two adaptive FIR filter configurations are proposed for implementing the LMS algorithm with no along delay elements or multipliers. The first uses a linear feedback shift register (LFSR) to generate pseudorandom binary sequences for applications where white noise has been traditionally used. The binary signals are delayed by a shift register and multiplied by on/off switching so that the result...
متن کاملDesign and Optimization of High Speed Rayleigh-based Radiocommunication Channel Emulator
In this paper, a Colored Rayleigh Fading Noise Generator (CRNG) model adapted to hardware implementation in FPGA circuit is developed for mobile communication channel emulation. To speed up Rayleigh Noise generation the presented design is based on a reduced complexity 2 order AR filter applied to a High accuracy Box-Muller based White Gaussian Noise. The statistical properties of the designed ...
متن کامل