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相关概念视频

Reconstruction of Signal using Interpolation01:10

Reconstruction of Signal using Interpolation

245
Signal processing techniques are essential for accurately converting continuous signals to digital formats and vice versa. When a continuous signal is sampled with a period T, the resulting sampled signal exhibits replicas of the original spectrum in the frequency domain, spaced at intervals equal to the sampling frequency. To handle this sampled signal, a zero-order hold method can be applied, which creates a piecewise constant signal by retaining each sample's value until the next...
245
Sampling Continuous Time Signal01:11

Sampling Continuous Time Signal

281
In signal processing, a continuous-time signal can be sampled using an impulse-train sampling technique, followed by the zero-order hold method. Impulse-train sampling involves the use of a periodic impulse train, which consists of a series of delta functions spaced at regular intervals determined by the sampling period. When a continuous-time signal is multiplied by this impulse train, it generates impulses with amplitudes corresponding to the signal's values at the sampling points.
In the...
281
Upsampling01:22

Upsampling

265
Managing signal sampling rates is essential in digital signal processing to maintain signal integrity. A decimated signal, characterized by a reduced frequency range due to its lower sampling rate, can be upsampled by inserting zeros between each sample. This upsampling process expands the original spectrum and introduces repeated spectral replicas at intervals dictated by the new Nyquist frequency. To refine this zero-inserted sequence, it is passed through a lowpass filter with a cutoff...
265
Effective Value of a Periodic Waveform01:07

Effective Value of a Periodic Waveform

588
The concept of effective value, the root mean square (RMS) value, is crucial in understanding electrical circuits and power delivery. This idea emerges from the necessity to measure the effectiveness of a voltage or current source in supplying power to a resistive load.
The effective value of a periodic current represents the direct current (DC) that conveys the same average power to a resistor as the periodic current itself. This concept is crucial when assessing AC circuits. To determine the...
588
Design Example: Capacitance Multiplier Circuit01:20

Design Example: Capacitance Multiplier Circuit

837
In integrated circuit technology, a capacitance multiplier is often utilized to produce a larger capacitance value when a small physical capacitance falls short. This is achieved by a circuit that multiplies capacitance values by a factor of up to 1000, such that a 10-pF capacitor can replicate the performance of a 100-nF capacitor.
The circuit illustrated in Figure 1 below incorporates two op-amps, with the first operating as a voltage follower and the second acting as an inverting amplifier.
837
Design Example01:23

Design Example

348
The innovation of touch-tone telephony revolutionized the telecommunications industry by replacing the traditional rotary dial with a dual-tone multi-frequency (DTMF) signaling system. This system uses a matrix-style keypad with buttons arranged in four rows and three columns, creating 12 distinct signals each assigned to a pair of frequencies. Each button press results in a simultaneous generation of two sinusoidal tones – one from a low-frequency group (697 to 941 Hz) and one from a...
348

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相关实验视频

Updated: Jul 23, 2025

Design and Characterization Methodology for Efficient Wide Range Tunable MEMS Filters
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Design and Characterization Methodology for Efficient Wide Range Tunable MEMS Filters

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为集成传感和通信提供双重约束波形优化.

Zhitong Ni1, Andrew Jian Zhang1, Ren-Ping Liu1

  • 1School of Electrical and Data Engineering, University of Technology, Sydney, NSW 2007, Australia.

Sensors (Basel, Switzerland)
|July 14, 2023
PubMed
概括
此摘要是机器生成的。

这项研究优化了集成传感和通信 (ISAC) 波形,使用相互信息和总比率约束. 新的方法解决了NP难题,使雷达和通信系统具有灵活的性能.

关键词:
综合传感和通信 (ISAC) 系统雷达通信中的雷达通信.门限制限制的限制波形优化,波形优化

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相关实验视频

Last Updated: Jul 23, 2025

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Design and Characterization Methodology for Efficient Wide Range Tunable MEMS Filters

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科学领域:

  • 电气工程 电气工程
  • 信号处理 信号处理
  • 无线通信无线通信

背景情况:

  • 综合传感和通信 (ISAC) 系统提供双重功能,但需要谨慎的波形设计.
  • 现有的ISAC波形优化通常集中在单个指标上,限制了性能灵活性.
  • 在约束条件下同时优化传感和通信指标对于先进的ISAC应用程序至关重要.

研究的目的:

  • 调查ISAC系统的值受约束的联合波形优化.
  • 为了同时优化传感 (相互信息) 和通信 (总比率) 性能.
  • 在ISAC中开发新的技术来解决复杂的NP难度优化问题.

主要方法:

  • 提出了三个不同的优化问题:雷达受约束,通信受约束和联合ISAC受约束.
  • 开发了新的梯度下降方法,用于仅限雷达和仅限通信的问题.
  • 将非凸接头ISAC优化问题转换为凸接头ISAC优化问题,以有效解决问题.

主要成果:

  • 在同时传感和通信限制下,成功优化了ISAC波形.
  • 证明了拟议的优化技术的灵活性和有效性.
  • 通过全面的数值和模拟结果验证了拟议的解决方案.

结论:

  • 开发的受值约束的联合波形优化为ISAC系统提供了显著的灵活性.
  • 新的优化技术有效地解决了ISAC波形设计的NP-hard性质.
  • 提出的方法为提高ISAC在实际应用中的性能提供了一种可行的方法.