Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Design Example01:23

Design Example

349
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...
349
Properties of Fourier Transform I01:21

Properties of Fourier Transform I

204
The application of Fourier Transform properties in radio broadcasting is multifaceted, enabling significant advancements in the way signals are transmitted and received. Key areas where these properties are utilized include simultaneous multi-channel transmission, audio clip speed adjustments, live broadcast delays for different time zones, audio frequency adjustments, and signal demodulation.
In radio broadcasting, multiple audio signals often need to be transmitted simultaneously. The Fourier...
204
Discrete-Time Fourier Series01:20

Discrete-Time Fourier Series

317
The Discrete-Time Fourier Series (DTFS) is a fundamental concept in signal processing, serving as the discrete-time counterpart to the continuous-time Fourier series. It allows for the representation and analysis of discrete-time periodic signals in terms of their frequency components. Unlike its continuous counterpart, which utilizes integrals, the calculation of DTFS expansion coefficients involves summations due to the discrete nature of the signal.
For a discrete-time periodic signal x[n]...
317
Discrete-time Fourier transform01:26

Discrete-time Fourier transform

395
The Discrete-Time Fourier Transform (DTFT) is an essential mathematical tool for analyzing discrete-time signals, converting them from the time domain to the frequency domain. This transformation allows for examining the frequency components of discrete signals, providing insights into their spectral characteristics. In the DTFT, the continuous integral used in the continuous-time Fourier transform is replaced by a summation to accommodate the discrete nature of the signal.
One of the notable...
395
Electronic Distance Measuring Instruments01:30

Electronic Distance Measuring Instruments

68
Electronic Distance Measuring Instruments (EDMs) are essential tools in modern surveying, offering precise distance measurements by emitting electromagnetic signals and calculating the time required for these signals to travel to a target and return. Two primary types of signals are used in EDMs — light waves and microwaves — each suited to specific environmental and distance requirements. Light-wave-based EDMs utilize either infrared or laser light, providing high accuracy over short...
68
Discrete Fourier Transform01:15

Discrete Fourier Transform

341
The Discrete Fourier Transform (DFT) is a fundamental tool in signal processing, extending the discrete-time Fourier transform by evaluating discrete signals at uniformly spaced frequency intervals. This transformation converts a finite sequence of time-domain samples into frequency components, each representing complex sinusoids ordered by frequency. The DFT translates these sequences into the frequency domain, effectively indicating the magnitude and phase of each frequency component present...
341

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

[Cardiac Tamponade Death Due to Rupture of Coronary Artery Aneurysm Caused by Incomplete Kawasaki Disease： A Case Report].

Fa yi xue za zhi·2026
Same author

Non-linear effects and lag patterns of eco-environmental factors on scrub typhus: a spatiotemporal analysis in Yunnan, China, 2015-2022.

Parasites & vectors·2026
Same author

Screening and Optimization of BMP2-Targeting siRNAs for Acceleration of Telogen-Anagen Transition and Hair Regrowth.

Journal of medicinal chemistry·2026
Same author

Case Report: Reversible myelodysplastic syndrome secondary to sodium valproate in an epileptic child.

Frontiers in pediatrics·2026
Same author

Identification and analysis of diagnostic senescence-related gene signatures for acute myocardial infarction based on multi-omics data and machine learning.

Frontiers in immunology·2026
Same author

Mechanistic insights into the molecular selectivity and cotransport dynamics of biodegradable microplastic-derived DOM with cadmium in saturated porous media.

Journal of hazardous materials·2026

Related Experiment Video

Updated: Jul 29, 2025

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
09:43

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Published on: March 20, 2017

9.9K

Digital radio-over-fiber system based on differential pulse code modulation and space division multiplexing.

Yunyu Song, Zhenming Yu, Enji Liu

    Optics Letters
    |May 24, 2023
    PubMed
    Summary

    This study introduces a digital-radio-over-fiber system using differential pulse code modulation (DPCM) for improved signal quality. DPCM significantly reduces noise, enhancing performance in multicore fiber transmissions.

    More Related Videos

    Quasi-light Storage for Optical Data Packets
    07:45

    Quasi-light Storage for Optical Data Packets

    Published on: February 6, 2014

    10.9K
    Microfluidic Platform with Multiplexed Electronic Detection for Spatial Tracking of Particles
    11:54

    Microfluidic Platform with Multiplexed Electronic Detection for Spatial Tracking of Particles

    Published on: March 13, 2017

    9.3K

    Related Experiment Videos

    Last Updated: Jul 29, 2025

    Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
    09:43

    Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

    Published on: March 20, 2017

    9.9K
    Quasi-light Storage for Optical Data Packets
    07:45

    Quasi-light Storage for Optical Data Packets

    Published on: February 6, 2014

    10.9K
    Microfluidic Platform with Multiplexed Electronic Detection for Spatial Tracking of Particles
    11:54

    Microfluidic Platform with Multiplexed Electronic Detection for Spatial Tracking of Particles

    Published on: March 13, 2017

    9.3K

    Area of Science:

    • Optical communications
    • Signal processing
    • Fiber optics

    Background:

    • Digital-radio-over-fiber (D-RoF) systems are crucial for high-speed wireless and wired networks.
    • Quantization noise is a significant challenge in D-RoF systems, especially at low resolutions.
    • Space division multiplexing (SDM) offers increased capacity in optical fiber links.

    Purpose of the Study:

    • To present and experimentally demonstrate a novel D-RoF architecture utilizing differential pulse code modulation (DPCM) and SDM.
    • To investigate the performance benefits of DPCM over traditional pulse code modulation (PCM) in reducing quantization noise.
    • To evaluate the system's effectiveness in transmitting high-bandwidth signals over multicore fiber links.

    Main Methods:

    • Implementation of a D-RoF architecture combining DPCM and SDM.
    • Experimental transmission of 64-ary quadrature amplitude modulation (64QAM) orthogonal frequency division multiplexing (OFDM) signals (100 MHz bandwidth).
    • Testing across 7-core and 8-core multicore fiber configurations in a hybrid fiber-wireless transmission setup.
    • Comparative analysis of error vector magnitude (EVM) between DPCM and PCM at varying quantization bits (QBs).

    Main Results:

    • DPCM effectively reduces quantization noise, yielding significant signal-to-quantization noise ratio (SQNR) gains at low quantization resolutions.
    • The DPCM-based D-RoF system demonstrated improved EVM performance compared to PCM-based systems for 3-5 QBs.
    • Specifically, at 3 QBs, DPCM-based D-RoF achieved 6.5% and 7% lower EVM in 7-core and 8-core fiber links, respectively.

    Conclusions:

    • The proposed DPCM-based D-RoF architecture offers a viable solution for enhancing signal quality in high-capacity optical networks.
    • DPCM provides a substantial advantage in mitigating quantization noise, leading to superior EVM performance in multicore fiber transmissions.
    • This technology is promising for future fiber-wireless hybrid systems requiring robust and high-fidelity signal transmission.