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See searches and references containing SPREAD SPECTRUM!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)
Spread_spectrum
Signal processing technique
In digital communications, chirp spread spectrum (CSS) is a spread spectrum technique that uses wideband linear frequency modulated chirp pulses to encode
Chirp_spread_spectrum
Radio signal transmission method
Frequency-hopping spread spectrum (FHSS) is a method of transmitting radio signals by rapidly changing the carrier frequency among many frequencies occupying
Frequency-hopping spread spectrum
Frequency-hopping_spread_spectrum
Modulation technique to reduce signal interference
In telecommunications, direct-sequence spread spectrum (DSSS) is a spread-spectrum modulation technique primarily used to reduce overall signal interference
Direct-sequence spread spectrum
Direct-sequence_spread_spectrum
Channel access method used by various radio communication technologies
permit this without undue interference between the users, CDMA employs spread spectrum technology and a special coding scheme (where each transmitter is assigned
Code-division_multiple_access
Electronic identifier embedded in an audio signal
and ownership verification. One technique for audio watermarking is spread spectrum audio watermarking (SSW). In SSW, a narrow-band signal is transmitted
Audio_watermark
Austrian-American actress and inventor (1914–2000)
co-invented a radio guidance system for Allied torpedoes that used spread spectrum and frequency hopping technology to defeat the threat of radio jamming
Hedy_Lamarr
Electromagnetic spectrum, 3 Hz – 3000 GHz
innovations such as trunked radio systems, spread spectrum, ultra-wideband, frequency reuse, dynamic spectrum management, frequency pooling, and cognitive
Radio_spectrum
Marker covertly embedded in a signal
The first successful embedding and extraction of a steganographic spread spectrum watermark was demonstrated in 1993 by Andrew Tirkel, Gerard Rankin
Digital_watermarking
Device for transmitting audio and video signals wirelessly
technologies exist, including analogue wireless (radio), digital wireless (spread-spectrum, Wi-Fi, ultra-wideband) and digital wired (power-line communication)
Video_sender
Spread-spectrum time-domain reflectometry (SSTDR) is a measurement technique to identify faults, usually in electrical wires, by observing reflected spread
Spread-spectrum time-domain reflectometry
Spread-spectrum_time-domain_reflectometry
Wireless communication technology
range") is a physical proprietary radio communication technique based on spread spectrum modulation. LoRa can be thought of as a radio signal technology, similar
LoRa
Electronic control system
designer can use a spread-spectrum PLL to reduce interference with high-Q receivers by spreading the energy over a larger portion of the spectrum. For example
Phase-locked_loop
Process of varying one or more properties of a periodic waveform
satellite communications for improved power efficiency. Spread Spectrum (e.g., DSSS): Spreads the signal energy across a wide band for robust, low probability
Signal_modulation
Dynamic: DCA, dynamic channel allocation DFS, dynamic frequency selection Spread spectrum In Fixed Channel Allocation or Fixed Channel Assignment (FCA) each
Channel_allocation_schemes
Electronic instrument
complex signals and detect reflections with correlation techniques. See spread-spectrum time-domain reflectometry. The equivalent device for optical fiber
Time-domain_reflectometer
interface. S-FSK (spread frequency-shift keying) is a modulation scheme that combines some of the advantages of classical spread-spectrum modulation (immunity
IEC_61334
Topics referred to by the same term
dispersion Seafloor spreading, the process leading to continental drift Spread spectrum, communications signals over a range of frequencies Spread Toolkit - an
Spread
Computer device interface
support for the so-called separate reference clock with independent spread spectrum clocking (SRIS) with some of its pre-production SATA Express hardware
SATA_Express
Telecommunications networks transmitted by radio waves
on spread spectrum technology developed for military use during World War II and improved during the Cold War into direct-sequence spread spectrum that
Cellular_network
Model aircraft
reliable than the new spread spectrum protocols. Systems such as Spektrum and JR use the DSM2 and later, DSMX direct-sequence spread spectrum (DSSS) method,
Radio-controlled_helicopter
Type of shift register in computing
method of spread-spectrum communication. When used only for the spread-spectrum property, this technique is called direct-sequence spread spectrum; when used
Linear-feedback shift register
Linear-feedback_shift_register
Means for multiple terminals to communicate over one medium
frequency-hopping spread spectrum (FHSS), where the channel frequency is changed rapidly according to a sequence that constitutes the spreading code. As an
Channel_access_method
Radio control systems brand
direct-sequence spread spectrum (DSSS) technology on the 2.4 GHz ISM band. Spektrum refers to their technology as "Digital Spectrum Modulation." Each
Spektrum_RC
IEEE standard for low-rate wireless personal area networks
the standard specifies two physical layers based on direct-sequence spread spectrum (DSSS) techniques: one working in the 868/915 MHz bands with transfer
IEEE_802.15.4
Network that allows computers to share resources and communicate with each other
and spread spectrum technologies – Wireless LANs use a high-frequency radio technology similar to digital cellular. Wireless LANs use spread spectrum technology
Computer_network
Family of wireless network protocols
versions of Wi-Fi use different techniques, 802.11b uses direct-sequence spread spectrum on a single carrier, whereas 802.11a, Wi-Fi 4, 5 and 6 use orthogonal
Wi-Fi
Method of combining multiple signals into one signal over a shared medium
multiplexing techniques such as frequency-hopping spread spectrum (FHSS) and direct-sequence spread spectrum (DSSS). In wireless communications, multiplexing
Multiplexing
Frequency swept signal
systems, and to other applications, such as in spread-spectrum communications (see chirp spread spectrum). This signal type is biologically inspired and
Chirp
Electronic method of transmitting information with a carrier wave
spread spectrum, which uses extremely wide frequency deviations to achieve processing gains comparable to traditional, better-known spread-spectrum modes)
Frequency_modulation
Wireless network standard
interference and susceptibility to interference by using direct-sequence spread spectrum (DSSS) and orthogonal frequency-division multiplexing (OFDM) signaling
IEEE_802.11
In a spread-spectrum system, the process gain (or "processing gain") is the ratio of the spread (or RF) bandwidth to the unspread (or baseband) bandwidth
Process_gain
Disturbance in an electrical circuit due to external sources of radio waves
activity Continuously operating spark gaps such as arc welders CDMA (spread-spectrum) mobile telephony An electromagnetic pulse (EMP), sometimes called
Electromagnetic_interference
Radio frequency allocations
also allocated to ISM. [1] In the U.S., the FCC first made unlicensed spread spectrum available in the ISM bands in rules adopted on May 9, 1985. The FCC
ISM_radio_band
Electrical engineering concept
design. High peaks at single frequencies can be avoided by using the spread spectrum method, in which different parts of the circuit emit at different frequencies
Electromagnetic_compatibility
Digital communications term
In digital communications, a chip is a pulse of a direct-sequence spread spectrum (DSSS) code, such as a pseudo-random noise (PN) code sequence used in
Chip_(CDMA)
Binary sequence used in telecommunications
2. Gold-Folgen" [Gold sequences]. Handbuch der Spread-Spectrum Technik [Handbook of the spread-spectrum technique] (in German) (1 ed.). Vienna, Austria:
Gold_code
Aircraft controlled remotely via radio control
use in the USA) and using both frequency-hopping spread spectrum and direct-sequence spread spectrum RF technology to maximize the number of available
Radio-controlled_aircraft
Self-propelled underwater weapon
technology, it did, in the 1960s, investigate various spread-spectrum techniques. Spread-spectrum techniques are incorporated into Bluetooth technology
Torpedo
Computer network not fully connected by cables
antenna device to relay calls from one area to the next area. Radio and spread spectrum technologies – Wireless local area networks use a high-frequency radio
Wireless_network
Wireless positioning technology
also enables UWB systems to spread the signal power over a large spectrum (this technology is thus called spread spectrum), avoiding narrowband interference
UWB_ranging
Portable telephone that connects to a landline
conversations. In 1995 digital spread spectrum (DSS) was introduced for cordless phones. This technology enabled the spreading of the digital voice transmission
Cordless_telephone
Rate of modulation of a digital signal
second. The history of spread spectrum goes in the opposite direction, leading to fewer and fewer data bits per symbol in order to spread the bandwidth. In
Symbol_rate
Transoceanic communication line placed on the seabed
Mehdi, and Lo, Chet. "Feasibility of Spread Spectrum Sensors for Location of Arcs on Live Wires Spread Spectrum Sensors for Location of Arcs on Live Wires
Submarine communications cable
Submarine_communications_cable
Information rate that can be transmitted over a given bandwidth
Spectral efficiency (alternatively, spectrum efficiency or bandwidth efficiency) refers to the information rate that can be transmitted over a given bandwidth
Spectral_efficiency
Mathematical sequences
the Welch lower bound. They are used as low-correlation spreading sequences in spread-spectrum communication systems. There are two classes of Kasami sequences—the
Kasami_code
Non-commercial use of the radio spectrum
Ham radio, is the use of specific bands and frequencies within the radio spectrum for non-commercial communication, technical experimentation, self-training
Amateur_radio
Clandestine espionage methods for collecting intelligence from human sources
frequencies. Frequency-hopping spread spectrum is a related technique, which can use the parallel transmission of true spread spectrum, not using any one frequency
Clandestine HUMINT operational techniques
Clandestine_HUMINT_operational_techniques
Procedure for scheduling data packets in a packet switched best-effort network
inexpensive, and should be given scheduling priority. In the uplink of a spread spectrum cellular system, the carrier-to-interference ratio (CIR) is held constant
Maximum_throughput_scheduling
Radio communication system implemented in software
that are switched in and out. The flexibility of SDR allows for dynamic spectrum usage, alleviating the need to statically assign the scarce spectral resources
Software-defined_radio
Uses of the 2.4 GHz ISM radio spectrum
of channel 11 is set at 2.405 GHz. The DSSS scheme is used to spread out the spectrum (from a data-rate of 250 kbit/s) and reduce interference. To avoid
2.4_GHz_radio_use
Type of wireless telecommunication network
Mbus. Chirp spread spectrum (CSS) based devices. Sigfox, UNB-based technology and French company. LoRa is a proprietary, chirp spread spectrum radio modulation
Low-power_wide-area_network
Oscillator with frequency controlled by a voltage input
Spread-Spectrum Frequency Dithering". incompliancemag.com. Same Page Publishing. July 2018. Retrieved 23 January 2020. "Oscillator – spread-spectrum
Voltage-controlled_oscillator
Electronic testing device
A spectrum analyzer measures the magnitude of an input signal versus frequency within the full frequency range of the instrument. The primary use is to
Spectrum_analyzer
Computer network multiple access method
under ideal propagation conditions (simulations), direct-sequence spread spectrum (DSSS) provides the highest throughput for all nodes on a network when
Carrier-sense multiple access with collision avoidance
Carrier-sense_multiple_access_with_collision_avoidance
Oscilloscope display of a digital data signal
spread-spectrum clocking, so assuming a fixed rate will lead to the eye grossly exaggerating the actual jitter present on the signal. (While spread spectrum
Eye_pattern
Standard for cdma2000 Spread Spectrum Systems TIA/EIA/IS-2000.5-C Upper Layer (Layer 3) Signaling Standard for cdma2000 Spread Spectrum Systems EIA SP 3128
List_of_EIA_standards
Multiple access scheme in telecommunications
Jourdan, "Orthogonal multicarrier techniques applied to direct sequence spread spectrum CDMA systems," in Proceedings of Global Telecommunications Conference
Multi-carrier code-division multiple access
Multi-carrier_code-division_multiple_access
Condition involving social and behavioral differences
Autism, also known as autism spectrum disorder (ASD), is a condition characterized by impairment in social communication and interaction, as well as a
Autism
Tracking system
Part 21: Direct Sequence Spread Spectrum (DSSS) 2,4 GHz air interface protocol: Transmitters operating with a single spread code and employing a DBPSK
Real-time_locating_system
Canadian multicast wireless sensor network technology
Bluetooth, Wi-Fi, and Zigbee employ direct-sequence spread spectrum (DSSS) and Frequency-hopping spread spectrum (FHSS) schemes respectively to maintain the integrity
ANT_(network)
Number of occurrences or cycles per unit time
signal characteristics Radio frequency Signaling (telecommunications) Spread spectrum Spectral component Transverter Upsampling Orders of magnitude (frequency)
Frequency
'Push-to-talk' calls feature available on some Motorola iDEN cellphones
be made safer using the radio's own ID) Frequency Hopping Spread Spectrum is a spread spectrum modulation technique in which the signal is emitted Over
MOTO_Talk
Hand-held portable two-way communications device
of walkie-talkies in the United States, based on frequency-hopping spread spectrum technology operating in this frequency range under the name eXRS (eXtreme
Walkie-talkie
Data network that uses electrical wiring
common between wireless and power-line communication, notably those of spread spectrum radio signals operating in a crowded environment. Radio interference
Power-line_communication
Open radio protocol for long range RC models
packet rates and lower latency. Frequency hopping: frequency-hopping spread spectrum (FHSS) to mitigate interference. Antenna diversity: some transmitters/receivers
ExpressLRS
Use of radio waves for communication
innovations such as trunked radio systems, spread spectrum (ultra-wideband) transmission, frequency reuse, dynamic spectrum management, frequency pooling, and
Radio
Pseudo-random signal with characteristics similar to noise
machines. In spread-spectrum systems, the receiver correlates a locally generated signal with the received signal. Such spread-spectrum systems require
Pseudorandom_noise
for 15 years. His notable work includes the design of a number of spread spectrum communications systems, and the Massey-Omura cryptosystem (with James
Jim_K._Omura
Data visualization technique
needed] (CSD). The results of spectral density estimation, showing the spectrum of the signal at successive intervals of time. The delayed response from
Waterfall_plot
Subfield of control engineering
signal to identify faults. Spread Spectrum Time Domain Reflectometry, for instance, involves sending down a spread spectrum signal down a wire line to
Fault_detection_and_isolation
Method of encoding digital data on multiple carrier frequencies
efficiency as compared to other double sideband modulation schemes, spread spectrum, etc. Can easily adapt to severe channel conditions without complex
Orthogonal frequency-division multiplexing
Orthogonal_frequency-division_multiplexing
Normalized signal-to-noise ratio measure
error correction coding or signal bandwidth (including any use of spread spectrum). This also avoids any confusion as to which of several definitions
Eb/N0
spectrum (also known as free spectrum) is a movement to get the Federal Communications Commission to provide more unlicensed radio-frequency spectrum
Open_spectrum
Representation of a signal as a rectangular wave with varying duty cycle
are random processes[clarification needed] that produces a continuous spectrum without distinct harmonics. While intersective PWM uses a fixed period
Pulse-width_modulation
System spectral efficiency of communication system
(also known as spread spectrum) are characterized by a very low link spectral efficiency in (bit/s)/Hz as compared to non-spread spectrum systems, but a
CDMA_spectral_efficiency
Component of communications security
signal interception. TRANSEC includes the use of frequency hopping, spread spectrum and the physical protection of communication links to obscure the patterns
Transmission_security
Communications signal technique
(time division multiple access). Spread spectrum Frequency-hopping spread spectrum Direct-sequence spread spectrum Ultra-wideband Frenzel, Louis E. (2001)
Time-hopping
Topics referred to by the same term
systems Pseudorandom noise, a deterministic sequence of pulses used in spread spectrum communication and rangefinding Phosphorus mononitride (PN), an inorganic
PN
Radio system for remotely listening to a child
transmitter is switched on. Digital transmission such as Frequency-hopping spread spectrum provides a level of protection from casual interception. Some wireless
Baby_monitor
Data communications modulation protocol
VHF and UHF voice channels. PSK31 Radioteletype Frequency-hopping spread spectrum also uses many different frequencies, where each symbol uses only one
Multiple frequency-shift keying
Multiple_frequency-shift_keying
of spectrum from 4910 to 4990 MHz has been available for both indoor and outdoor use, once registered. Until 2017, an additional 60 MHz of spectrum from
List_of_WLAN_channels
Type of pseudorandom binary sequence
communication systems that employ direct-sequence spread spectrum and frequency-hopping spread spectrum transmission systems, and in the efficient design
Maximum_length_sequence
Short-range wireless technology standard
frequency band. Bluetooth uses a radio technology called frequency-hopping spread spectrum. Bluetooth divides transmitted data into packets, and transmits each
Bluetooth
Electronic method of transmitting information with a carrier wave
PPM PSK QAM SC-FDE TCM TC-PAM WDM Hierarchical modulation QAM WDM Spread spectrum CSS DSSS FHSS THSS See also Capacity-approaching codes Demodulation
Phase_modulation
When a message's bandwidth significantly exceeds the system's coherence bandwidth
"necessary" for that data rate in order to gain other advantages; see spread spectrum. A wideband antenna is one with approximately or exactly the same operating
Wideband
Fourth-generation mobile telecommunications standard
(IP) based communication such as IP telephony. As seen below, the spread spectrum radio technology used in 3G systems is abandoned in all 4G candidate
4G
Personal area network IEEE standard
three of which utilized direct-sequence spread spectrum (DSSS), and one which used parallel-sequence spread spectrum (PSSS). IEEE 802.15.4a specifies two
IEEE_802.15.4a
Transmitting data from a utility meter
(single fixed radio frequency) Spread spectrum Direct-sequence spread spectrum (DSSS) Frequency-hopping spread spectrum (FHSS) There are also meters using
Automatic_meter_reading
Sinusoidal wave without any modulation
information itself, so newer forms of radio communication (such as spread spectrum and ultra-wideband), and OFDM which is widely used in Wi-Fi networks
Carrier_wave
Use of radio signals to remotely control a device, vehicle or drone
encoding has always required. In the early 21st century, 2.4 gigahertz spread spectrum RC control systems have become increasingly utilized in control of
Radio_control
NATO military tactical data exchange network
kilobits per second (kbit/s), although the radios and frequency-hopping spread spectrum (FHSS) waveform itself can support throughput values well over 1 Mbit/s
Link_16
Swiss inventor (1909–1982)
Guanella is credited as one of the inventors of the Direct Sequence Spread Spectrum (DSSS) transmission technique. The patent filing date in Switzerland
Gustav_Guanella
British musician
released on Bosconi Records in 2012. In 2013, the album Silent Spread Sound Spectrum was released on the Society of Sound – a subscription based music
A_Guy_Called_Gerald
management of radio spreading codes for security, and increasing capacity new queue management and forwarding techniques for spread spectrum channels scalability
SURAN
Type of wireless telecommunication network
UNB-based technology and French company. LoRa is a proprietary, chirp spread spectrum radio modulation technology for LPWAN used by LoRaWAN, Haystack Technologies
Decentralized physical infrastructure network
Decentralized_physical_infrastructure_network
Type of amplitude-shift keying modulation
PPM PSK QAM SC-FDE TCM TC-PAM WDM Hierarchical modulation QAM WDM Spread spectrum CSS DSSS FHSS THSS See also Capacity-approaching codes Demodulation
On–off_keying
Arrangement of a communication network
antenna device to relay calls from one area to the next area. Radio and spread spectrum technologies – Wireless local area networks use a high-frequency radio
Network_topology
American mathematician (1932–2016)
of cordless and cellular phones employ pseudorandom direct-sequence spread spectrum implemented with shift register sequences. His efforts made USC a center
Solomon_W._Golomb
American composer and inventor (1900–1959)
frequency hopping, between the transmitter and receiver. It is one of the spread spectrum techniques that became widely used in modern telecommunications. This
George_Antheil
SPREAD SPECTRUM
SPREAD SPECTRUM
Boy/Male
Hebrew
Spread.
Boy/Male
English
Spear.
Boy/Male
Indian
Everlasting
Boy/Male
Arabic, Hindu, Indian, Muslim, Pashtun, Sindhi
Which has a Beginning or End; Eternity
Girl/Female
Hebrew English Irish
Kind.
Surname or Lastname
English (Nottinghamshire)
English (Nottinghamshire) : nickname for a thin person, from Middle English spray ‘slender branch’ (of uncertain origin).
Surname or Lastname
English
English : topographic name for someone who lived beside a stream, Middle English streme.Americanized form of Swedish Ström or Danish Strøm (see Strom).
Surname or Lastname
English
English : variant spelling of Sneed.
Male
English
English surname transferred to forename use, derived from an Old English byname, Red, READ means "red-headed or ruddy-complexioned."Â
Surname or Lastname
English
English : variant spelling of Street.
Surname or Lastname
English (chiefly West Yorkshire)
English (chiefly West Yorkshire) : habitational name from Stead in West Yorkshire, or from some other place taking its name from Old English stede ‘estate’, ‘farm’, ‘place’.English (chiefly West Yorkshire) : from Middle English steed ‘stud horse’, ‘stallion’, applied as a nickname to a lusty person or as an occupational name to someone responsible for looking after stallions.
Girl/Female
Australian, Hebrew, Irish
The Lord is Gracious; Praise; Kind; Female Version of John
Boy/Male
Muslim/Islamic
Eternity
Surname or Lastname
English
English : possibly from Middle English smethe ‘smooth’, hence a topographic name for someone who lived on a piece of smooth, level ground, or a nickname from the same word used in a transferred sense for someone of an amiable disposition. Alternatively, it could be a topographic or metonymic occupational name from Old English smiððe, smeðe ‘smithy’, or a habitational name from a place named with this word, as for example Smeeth in Kent.
Boy/Male
Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Telugu
Lord Shiva
Boy/Male
Hebrew
Spread.
Boy/Male
American, British, English
Spear-man
Surname or Lastname
English
English : nickname for a fortunate person, from Middle English sped ‘success’, ‘good fortune’, ‘smooth progress’ (hence the modern meaning ‘swiftness’).English : from the derived sense of Middle English sped mentioned above, hence a nickname for a swift runner.Irish : Anglicization (part translation) of Gaelic Ó Fuada, from fuad ‘haste’ (see Foody).Translation of German and Ashkenazic Jewish Schnell.
Girl/Female
Irish
Irish form of Jane “God is gracious.â€
Surname or Lastname
English
English : from Middle English spere ‘spear’, hence a nickname for a tall, thin person, or else for a skilled user of the hunting spear. In part it may also have been a metonymic occupational name for a maker of spears
SPREAD SPECTRUM
SPREAD SPECTRUM
Male
English
Pet form of English Charles, CHUCK means "man."
Boy/Male
Tamil
Sandeepan | ஸஂதீபநÂ
A sage, Lighting
Girl/Female
Indian, Sanskrit
Well Chanting
Girl/Female
American, Australian, British, English, Scottish
Young Fighter; Female Version of Evan; Right Handed; Young Warrior
Boy/Male
Hindu, Indian
Wisdom
Girl/Female
Australian, Latin, Spanish
Sweet
Girl/Female
Arabic, Muslim
One who Controls or Suppresses her Anger; Feminine of Kazim
Boy/Male
Indian, Punjabi, Sikh
Beautiful Prince
Girl/Female
Hindu, Indian, Marathi
With Divine Knowledge
Boy/Male
Anglo Saxon
Unity.
SPREAD SPECTRUM
SPREAD SPECTRUM
SPREAD SPECTRUM
SPREAD SPECTRUM
SPREAD SPECTRUM
v. t.
To prepare; to set and furnish with provisions; as, to spread a table.
n.
A table, as spread or furnished with a meal; hence, an entertainment of food; a feast.
v. t.
To diffuse, as emanations or effluvia; to emit; as, odoriferous plants spread their fragrance.
v. i.
To be diffused; to spread.
v. t.
To propagate; to cause to affect great numbers; as, to spread a disease.
v. t. & i.
See Dispread.
v. i.
To be propagated from one to another; as, the disease spread into all parts of the city.
a.
Characterized by a pretentious, boastful, exaggerated style; defiantly or extravagantly bombastic; as, a spread-eagle orator; a spread-eagle speech.
v. t.
To strew; to scatter over a surface; as, to spread manure; to spread lime on the ground.
v. t.
To divulge; to publish, as news or fame; to cause to be more extensively known; to disseminate; to make known fully; as, to spread a report; -- often acompanied by abroad.
a.
To spread.
v. i.
To be extended by drawing or beating; as, some metals spread with difficulty.
a.
Not read or perused; as, an unread book.
imp. & p. p.
of Bespread
v. t.
To extend in length and breadth, or in breadth only; to stretch or expand to a broad or broader surface or extent; to open; to unfurl; as, to spread a carpet; to spread a tent or a sail.
v. t.
To spread abroad, or different ways; to spread apart; to open; as, the sun dispreads his beams.
imp. & p. p.
of Spread
v. t.
To spread or cover over.