What methods have been implemented for an frequency error correcting oscillator exchanged with the application system?
Best insight from top research papers
Various methods have been implemented for frequency error correction of oscillators in application systems. One method involves receiving a transmission signal modulated by orthogonal frequency division multiplexing (OFDM), determining the frequency deviation of the oscillator using the received signal, and correcting the frequency of the oscillator using a correction signal . Another method uses time information received through a network to calculate the average frequency errors in the oscillator over multiple times, and corrects the frequency errors using desired oscillatory frequencies . A frequency correcting system includes an oscillator that outputs a target signal with an oscillating frequency, and a frequency corrector that compares the frequency of the target signal with a reference signal and corrects the oscillating frequency to match the reference signal . Additionally, a system and method are provided for frequency multiplication jitter correction using an analog reference signal and a voltage controlled oscillator (VCO) . Finally, a method for correcting an oscillator frequency involves comparing a first reference frequency signal with a second reference frequency signal, calculating a correction factor, and correcting the frequency signals representing measured quantities based on the calculated correction factor .
Answers from top 5 papers
More filters
| Papers (5) | Insight |
|---|---|
Patent 14 Feb 2019 5 Citations | The method described in the paper uses orthogonal frequency division multiplexing (OFDM) to determine and correct the frequency deviation of the oscillator in a sensor node of a wireless sensor network. |
| A method for correcting an oscillator frequency by comparing reference frequency signals and calculating a correction factor to obtain corrected frequency signals. | |
| The method described in the paper uses a voltage controlled oscillator (VCO) in a phase-locked loop (PLL) for frequency multiplication and jitter correction. | |
| The frequency error correction device uses an average of frequency errors calculated over multiple times based on time information received through a network, counter result, and desired oscillatory frequencies. | |
| The paper does not provide specific information about the methods implemented for frequency error correction in the oscillator. |
Related Questions
What are effective techniques for quanutm error correction?5 answersEffective techniques for quantum error correction include quantum error correction codes and noise tailoring methods. Quantum error correction codes are designed to minimize error rates and increase the stability of quantum circuits. They involve parameters such as the distance of the error-correcting code and the error probability, which determine the number of errors that can be corrected and the likelihood of errors occurring in the quantum system. Researchers use simulations to study the performance of these codes and optimize them for maximum accuracy. Noise tailoring methods, such as randomized compiling, convert complex coherent noise processes to effective stochastic noise. This can improve the performance of error correcting codes, especially for coherent errors arising from control errors. Randomized compiling has been shown to significantly reduce the resource overhead required to achieve fault tolerance.
How is Time Interval Error calculated for oscillators using frequency measurements of the oscillator?5 answersTime interval error for oscillators can be calculated using frequency measurements of the oscillator. One method involves measuring the reference frequency of a crystal oscillator clock and comparing it with the frequency of the oscillator being measured. By counting the clock signals sent by both oscillators and determining the error based on the count values and reference frequency, the frequency error of the oscillator can be obtained. Another method involves using a frequency counter in time-domain frequency stability analysis. This method compares the measurements obtained from the frequency counter with reference measurements to analyze the stability of the oscillator. Additionally, clock jitter induced error can be estimated by phase noise power spectral density (PSD) measurements. By considering the finite observation window of the phase error and accounting for spurious tones in the phase noise PSD, the precision of a time-to-digital converter can be improved.
How to make the best crystal oscillator?4 answersThe best crystal oscillator can be made by following a specific manufacturing method. This method involves preparing a ceramic connecting plate, a wafer, and a cover plate. The ceramic connecting plate is processed to form an array of crystal oscillator bases, which undergo surface metallization treatment. The wafer and cover plate are then fixed in a precise laser welding machine and scanning welding is performed on the edge of each crystal oscillator base. After cutting and separating the cover plate, the ceramic connecting plate is either cut and scribed or directly split into multiple units using a ceramic laser scribing machine. This method ensures that all the crystal oscillation devices are separated after being welded, avoiding failure risks caused by smoke dust pollution and increasing packaging efficiency.
How does the CPU adjust its frequency?5 answersThe CPU adjusts its frequency in various ways based on different factors. One method involves continuously correcting the maximum running frequency of the CPU according to the actual running condition of the CPU during each application run. Another method involves using multiple frequencies within each frequency-adjusting period to reduce the impact of frequency adjustment on CPU operating efficiency. Additionally, there is a method that lowers the CPU frequency when the physical information of the electronic equipment exceeds a preset area, and reverts to normal within a second time period. Under an NUMA architecture, the frequency of CPU cores can be adjusted based on the type of tasks and the current bottleneck, reducing unnecessary energy and resource consumption. Furthermore, there are methods that dynamically adjust the CPU frequency based on the current performance of an application and a target performance level, aiming to satisfy application SLAs and conserve energy.
What are quantum error correction code?4 answersQuantum error correction codes (QECC) are codes that are used in quantum computing to reduce errors and improve the reliability of quantum computations. Similar to classical error correction codes (ECC), QECC distribute quantum logical information across redundant physical qubits, allowing for the detection and correction of errors. These codes are designed to encode multiple imperfect physical qubits into a logical quantum state, mitigating the impact of errors caused by decoherence. One type of QECC is the surface code, which is currently a leading candidate for implementing quantum fault-tolerance. Another type is the low-density parity-check (LDPC) quantum codes, which are an alternative to the surface code and have shown potential for making quantum computers robust against noise. The cat code is another encoding scheme for bosonic quantum error correction that allows for correction against losses, which are a dominant error mechanism in most bosonic systems.
Can we convert amplifier to oscillator?9 answers