Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Bandpass Sampling

Bandpass Sampling

In signal processing, bandpass sampling is an effective technique for sampling signals that have most of their energy concentrated within a narrow frequency band. This type of signal is known as a bandpass signal. The key principle of bandpass sampling involves sampling the signal at a rate that is greater than twice the signal's bandwidth to prevent aliasing.
A bandpass signal has a spectrum with a lower frequency limit, denoted as ω1, and an upper frequency limit, denoted as ω2....

Upsampling

Upsampling

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...

Reconstruction of Signal using Interpolation

Reconstruction of Signal using Interpolation

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...

Characteristics of Practical Op Amps

Characteristics of Practical Op Amps

A difference amplifier, a crucial component in numerous electronic devices, ideally amplifies only the difference-mode signal, which is the difference between two input signals. However, in practical circuits, the output voltage depends on both the differential gain and the common-mode gain.
The ratio of differential gain to the common-mode gain is defined as the common-mode rejection ratio (CMRR). This ratio quantifies the ability of operational amplifiers (op-amps) to reject common-mode...

Electronic Distance Measuring Instruments

Electronic Distance Measuring Instruments

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...

You might also read

Related Articles

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

Sort by

Same author

Nonlinear compensation for ultra-high symbol rate PDM-WDM systems based on second-order perturbation theory.

Optics express·2026

Same author

Integrating Combination Therapy and Smart Embolic Materials to Overcome the Therapeutic Ceiling of Transarterial Chemoembolization in Hepatocellular Carcinoma.

Journal of hepatocellular carcinoma·2026

Same author

Vibration detection based on DSP frame pilot symbols using integrated coherent receivers.

Optics letters·2026

Same author

Phase noise in probabilistic shaping DP-CS-NFDM systems: modeling and low-complexity estimation.

Optics letters·2026

Same author

Effective performance-enhanced CS-NFDM system employing general orthogonal circulant transform precoding.

Optics express·2026

Same author

Low-complexity symbol-rate equalization schemes for short-reach coherent-lite optical interconnects.

Optics express·2026

Search research articles

Related Experiment Video

Updated: Jun 22, 2025

Design and Characterization Methodology for Efficient Wide Range Tunable MEMS Filters

Design and Characterization Methodology for Efficient Wide Range Tunable MEMS Filters

Published on: February 4, 2018

Optimized equalization based on MAP detection for C-band bandwidth-limited IM/DD systems.

Xiaoqian Huang, Fei Xie, Shuangyue Liu

|July 1, 2024

Summary

This summary is machine-generated.

A new CNS-CSF-MAP scheme effectively mitigates dynamic and deterministic inter-symbol interferences (ISIs) in optical IM/DD systems. This method improves transmission capacity and offers significant performance gains over conventional schemes.

More Related Videos

Gain-compensation Methodology for a Sinusoidal Scan of a Galvanometer Mirror in Proportional-Integral-Differential Control Using Pre-emphasis Techniques

Gain-compensation Methodology for a Sinusoidal Scan of a Galvanometer Mirror in Proportional-Integral-Differential Control Using Pre-emphasis Techniques

Published on: April 4, 2017

X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging

X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging

Published on: September 11, 2011

Related Experiment Videos

Last Updated: Jun 22, 2025

Design and Characterization Methodology for Efficient Wide Range Tunable MEMS Filters

Design and Characterization Methodology for Efficient Wide Range Tunable MEMS Filters

Published on: February 4, 2018

Gain-compensation Methodology for a Sinusoidal Scan of a Galvanometer Mirror in Proportional-Integral-Differential Control Using Pre-emphasis Techniques

Gain-compensation Methodology for a Sinusoidal Scan of a Galvanometer Mirror in Proportional-Integral-Differential Control Using Pre-emphasis Techniques

Published on: April 4, 2017

X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging

X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging

Published on: September 11, 2011

Area of Science:

Optical communications
Signal processing

Background:

Inter-symbol interference (ISI) in intensity modulation and direct detection (IM/DD) systems limits transmission capacity.
Complicated channel impairments cause entangled dynamic and deterministic ISIs.

Purpose of the Study:

To propose a novel scheme for disentangling and mitigating both dynamic and deterministic ISIs.
To enhance the transmission capacity of IM/DD systems.

Main Methods:

A colored noise-suppressed channel shortening filter (CNS-CSF) was developed for optimized dynamic ISI equalization and noise suppression.
A maximum a posteriori (MAP) estimation algorithm was employed to eliminate residual deterministic ISI.
The CNS-CSF-MAP scheme was evaluated in a C-band 61-Gb/s 100-km optical on-off keying (OOK) IM/DD system.

Main Results:

The CNS-CSF-MAP scheme achieved 20% and 7% forward error correction (FEC) thresholds at received optical powers (ROPs) of -6.6 dBm and -4 dBm, respectively.
The proposed scheme demonstrated 0.5-dB and 1.5-dB gains compared to the conventional post-filter-enabled MAP (PF-MAP) scheme.
Effective mitigation of both dynamic and deterministic ISIs was experimentally verified.

Conclusions:

The CNS-CSF-MAP scheme offers a superior solution for managing complex ISI challenges in optical IM/DD systems.
This approach significantly enhances system performance and opens possibilities for higher data rates.