Related Experiment Video
Updated: Apr 26, 2026
05:57
Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station
Published on: April 1, 2020
9.4K
Design and implementation of hybrid CORDIC algorithm based on phase rotation estimation for NCO.
Chaozhu Zhang1, Jinan Han1, Ke Li1
1College of Information and Communication Engineering, Harbin Engineering University, Harbin 150001, China.
Thescientificworldjournal
|August 12, 2014
Summary
This study introduces a hybrid CORDIC algorithm for numerical controlled oscillators (NCOs), enhancing computing speed and resource efficiency. The novel approach reduces computational complexity, making it ideal for high-speed digital systems.
Area of Science:
- Digital Signal Processing
- Computer Engineering
Background:
- Numerical Controlled Oscillators (NCOs) are crucial in radar, digital receivers, and software radio.
- Traditional CORDIC algorithms face limitations in computing speed and resource utilization.
Purpose of the Study:
- To propose a hybrid CORDIC algorithm for NCOs to improve computational efficiency.
- To reduce delay and resource consumption in NCO implementation.
Main Methods:
- Introduced traditional CORDIC algorithm.
- Developed a hybrid CORDIC algorithm utilizing phase rotation estimation.
- Simulated and implemented the NCO using Quartus II and Modelsim software.
Main Results:
- The hybrid CORDIC algorithm demonstrated improved ease of computation and resource utilization.
- Achieved reduced delay and enhanced computing speed compared to traditional methods.
- Maintained high precision in NCO operations.
Conclusions:
- The proposed hybrid CORDIC algorithm offers significant advantages for NCOs.
- It is well-suited for high-speed and high-precision digital modulation and demodulation applications.
- This method optimizes NCO performance for advanced electronic systems.
Related Concept Videos
01:17Design Example: Underdamped Parallel RLC Circuit
815
Consider designing an oscillator circuit, a crucial component in various electronic devices and systems. The objective is to create an oscillator circuit with specific characteristics: a damped natural frequency of 4 kHz and a damping factor of 4 radians per second. To accomplish this, a parallel RLC circuit is employed, known for its ability to sustain oscillations at a resonant frequency. In this case, the damping factor is pivotal in achieving the desired performance.
Starting with a fixed...
Starting with a fixed...
815
01:22Phase-lead and Phase-lag Controllers
661
Understanding the working function of different types of controllers can be illustrated with practical analogies, such as adjusting a stereo's volume equalizer. Cranking up the bass involves a phase-lead controller, which functions as a high-pass filter, while increasing the treble uses a phase-lag controller, which acts as a low-pass filter. PD controllers, similar to high-pass filters, enhance the system's response to high-frequency components. PI controllers, akin to low-pass...
661
01:24Time and frequency -Domain Interpretation of Phase-lead Control
564
Phase-lead controllers are commonly used in various control systems to enhance response speed and stability. Adjusting the brightness on a television screen offers a practical example of phase-lead control. When contrast is enhanced, a phase-lead controller is employed. Mathematically, phase-lead control is identified when the first parameter is smaller than the second.
The design of phase-lead control involves the strategic placement of poles and zeros to balance steady-state error and system...
The design of phase-lead control involves the strategic placement of poles and zeros to balance steady-state error and system...
564
01:30Oscillations In An LC Circuit
2.6K
An idealized LC circuit of zero resistance can oscillate without any source of emf by shifting the energy stored in the circuit between the electric and magnetic fields. In such an LC circuit, if the capacitor contains a charge q before the switch is closed, then all the energy of the circuit is initially stored in the electric field of the capacitor. This energy is given by
2.6K
01:21Time and frequency -Domain Interpretation of Phase-lag Control
471
Phase-lag controllers are widely used in control systems to improve stability and reduce steady-state errors. A dimmer switch controlling the brightness of a light bulb serves as a practical example of phase-lag control, gradually adjusting the bulb's brightness. Mathematically, phase-lag control or low-pass filtering is represented when the factor 'a' is less than 1.
Phase-lag controllers do not place a pole at zero, but instead influence the steady-state error by amplifying any...
Phase-lag controllers do not place a pole at zero, but instead influence the steady-state error by amplifying any...
471
01:30RLC Circuit as a Damped Oscillator
2.7K
An RLC circuit combines a resistor, inductor, and capacitor, connected in a series or parallel combination.
Consider a series RLC circuit. Here, the presence of resistance in the circuit leads to energy loss due to joule heating in the resistance. Therefore, the total electromagnetic energy in the circuit is no longer constant and decreases with time. Since the magnitude of charge, current, and potential difference continuously decreases, their oscillations are said to be damped. This is...
Consider a series RLC circuit. Here, the presence of resistance in the circuit leads to energy loss due to joule heating in the resistance. Therefore, the total electromagnetic energy in the circuit is no longer constant and decreases with time. Since the magnitude of charge, current, and potential difference continuously decreases, their oscillations are said to be damped. This is...
2.7K