Spread spectrum - Wikipedia
网页In telecommunications, especially radio communication, spread spectrum are techniques by which a signal (e.g., an electrical, electromagnetic, or acoustic) generated with a particular bandwidth is deliberately spread in the frequency domain over a wider frequency band.
Spread Spectrum Communications - Definition & Techniques - NI
网页2024年9月25日 · Spread spectrum systems spread a signal over a wider frequency band than the original message while transmitting at the same signal power, making it harder to intercept or jam. This tutorial covers an introduction to RF, wireless and high-frequency signals and systems.
What is Spread Spectrum? - GeeksforGeeks
网页2024年7月16日 · Spread Spectrum is a wireless communication technology that distributes the transmitted signal across a larger bandwidth than the original signal. This approach improves communication security and dependability by increasing the signal’s resistance to interference, eavesdropping, and jamming.
An Introduction to Spread-Spectrum Communications - Analog
网页2003年2月18日 · A tutorial overview of spread spectrum communications. Find tutorial overview of both direct sequence and fast hopping methods.
Spread Spectrum Technology & Communications - EE Times
网页2003年5月6日 · In this tutorial, we’ll take on that task, addressing the basic operating characteristics of a spread-spectrum system. We’ll also examine the key differentiators between frequency-hop (FHSS) and direct-sequence spread spectrum (DSSS) implementations.
Spread Spectrum Technology: Definition & Overview - EDN
网页2014年9月8日 · Spread-spectrum (SS) technology uses a sequential noise-like signal to spread the normally narrowband information signal over a relatively wide band of radio frequencies. The receiver correlates the received signals to …
网页Spread spectrum systems is a class of (primarily) wireless digital communication systems specifically designed to overcome a jamming situation, i.e., when an ad- versary intends to disrupt the communication.
Spread Spectrum - an overview | ScienceDirect Topics
网页Spread Spectrum refers to a system in which the transmitted signal is spread over a wide frequency band, much wider than the bandwidth required to transmit the message. This system uses a spreading code to modulate the message signal, resulting in a modulated baseband signal with a much higher rate and wider spectrum than the original message.
Understanding Spread-Spectrum RF Communication
网页We can spread a spectrum, then, by incorporating higher frequencies into the baseband signal. But how do we accomplish this without changing the baseband information? The solution is something called a spreading sequence, also known as a pseudo-noise (PN) code or a pseudo-random-noise (PRN) code.
Spread Spectrum (Chapter 13) - Wireless Communications
网页Spread spectrum is a technique that increases signal bandwidth beyond the minimum necessary for data communication. There are many reasons for doing this. Spread-spectrum techniques can hide a signal below the noise floor, making it difficult to detect.