Spread spectrum
Spreading the frequency domain of a signal
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 techniques are used for the establishment of secure communications, increasing resistance to natural interference, noise, and jamming, to prevent detection, to limit power flux density (e.g., in satellite downlinks), and to enable multiple-access communications.
Nº Q958957 ★★
Uncommon · Knowledge
Spread spectrum
Spreading the frequency domain of a signal
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 techniques are used for the establishment of secure communications, increasing resistance to natural interference, noise, and jamming, to prevent detection, to limit power flux density (e.g., in satellite downlinks), and to enable multiple-access communications.
Last price
—
Floor price
—
7-day median
—
30-day sales
0
30-day range
—
In circulation
0
Price history
median
low – high
sales
No sales in this period
Show table
| Date | median | Low | High | sales |
|---|
Sales history
- Last sale
- —
- 30-day average
- —
- 30-day low
- —
- 30-day high
- —
- Sales 7d
- 0
- Sales 30d
- 0
No sales yet.
Anonymous sales: no buyer or seller shown. Figures count player-to-player sales only.
From Wikipedia
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 techniques are used for the establishment of secure communications, increasing resistance to natural interference, noise, and jamming, to prevent detection, to limit power flux density (e.g., in satellite downlinks), and to enable multiple-access communications.
Text: Wikipédia, CC BY-SA 4.0. · Image: J.Hamada (CC BY-SA 3.0) ·
Related cards
Bandwidth (signal processing)
Difference between the upper and lower frequencies passed by a filter, communication channel, or signal spectrum
Nº Q249998 ★★★
Digital subscriber line
Technologies for transmission of digital data over telephone lines
Nº Q104534 ★★★
Digital mobile radio
Transmission standard for voice and data in non-public radio networks
Nº Q1154559 ★★
DiSEqC
Communication protocol for satellite receivers
Nº Q279793 ★★
Frequency-hopping spread spectrum
Radio signal transmission method invented by Hedy Lamarr
Nº Q1136013 ★★
Very high frequency
The 30–300 MHz range of the electromagnetic spectrum
Nº Q152466 ★★★