Direct-sequence spread spectrum and Linear-feedback shift register

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Difference between Direct-sequence spread spectrum and Linear-feedback shift register

Direct-sequence spread spectrum vs. Linear-feedback shift register

In telecommunications, direct-sequence spread spectrum (DSSS) is a spread spectrum modulation technique used to reduce overall signal interference. In computing, a linear-feedback shift register (LFSR) is a shift register whose input bit is a linear function of its previous state.

Bit

The bit (a portmanteau of binary digit) is a basic unit of information used in computing and digital communications.

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Code-division multiple access

Code-division multiple access (CDMA) is a channel access method used by various radio communication technologies.

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Frequency-division multiple access

Frequency division multiple access (FDMA) is a channel access method used in multiple-access protocols as a channelization protocol.

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Global Positioning System

The Global Positioning System (GPS), originally Navstar GPS, is a satellite-based radionavigation system owned by the United States government and operated by the United States Air Force.

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GLONASS

GLONASS (ГЛОНАСС,; Глобальная навигационная спутниковая система; transliteration), or "Global Navigation Satellite System", is a space-based satellite navigation system operating in the radionavigation-satellite service.

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Phase-shift keying

Phase-shift keying (PSK) is a digital modulation process which conveys data by changing (modulating) the phase of a constant frequency reference signal (the carrier wave).

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Pseudorandom binary sequence

A pseudorandom binary sequence (PRBS) is a binary sequence that, while generated with a deterministic algorithm, is difficult to predict and exhibits statistical behavior similar to a truly random sequence.

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Pseudorandom noise

In cryptography, pseudorandom noise (PRN) is a signal similar to noise which satisfies one or more of the standard tests for statistical randomness.

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Pseudorandomness

A pseudorandom process is a process that appears to be random but is not.

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Radio jamming

Radio jamming is the deliberate jamming, blocking or interference with authorized wireless communications.

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Satellite navigation

A satellite navigation or satnav system is a system that uses satellites to provide autonomous geo-spatial positioning.

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Spread spectrum

In telecommunication and radio communication, spread-spectrum techniques are methods by which a signal (e.g., an electrical, electromagnetic, or acoustic signal) generated with a particular bandwidth is deliberately spread in the frequency domain, resulting in a signal with a wider bandwidth.

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White noise

In signal processing, white noise is a random signal having equal intensity at different frequencies, giving it a constant power spectral density.

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