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Channel access method used by various radio communication technologies
Code-division multiple access (CDMA) is a channel access method used by various radio communication technologies. CDMA is an example of multiple access
Code-division_multiple_access
Signal processing technique in telecommunications
Alternatives include time-division multiple access (TDMA), code-division multiple access (CDMA), or space-division multiple access (SDMA). These protocols
Frequency-division multiple access
Frequency-division_multiple_access
Multiple access scheme in telecommunications
Multi-carrier code-division multiple access (MC-CDMA) is a multiple access scheme used in OFDM-based telecommunication systems, allowing the system to
Multi-carrier code-division multiple access
Multi-carrier_code-division_multiple_access
Channel access method for networks using a shared communications medium
Time-division multiple access (TDMA) is a channel access method for shared-medium networks. It allows several users to share the same frequency channel
Time-division_multiple_access
Third generation mobile cellular system
networks based on the GSM standard. UMTS uses wideband code-division multiple access (W-CDMA) radio access technology to offer greater spectral efficiency and
UMTS
Modulation technique to reduce signal interference
interference. Some practical and effective uses of DSSS include the code-division multiple access (CDMA) method, the IEEE 802.11b specification used in Wi-Fi
Direct-sequence spread spectrum
Direct-sequence_spread_spectrum
Electronics Engineers. p. 340. ISBN 9780780323407. Frequency-division multiple access Code-division multiple access Time-division multiple access v t e
Polarization-division multiple access
Polarization-division_multiple_access
Means for multiple terminals to communicate over one medium
CSMA/CA, used in wireless networks such as IEEE 802.11. The code-division multiple access (CDMA) scheme is based on spread spectrum, meaning that a wider
Channel_access_method
Channel-access method in communications
Space-division multiple access (SDMA) is a technique to enhance the capacity of mobile and WiFi networks that use a base station hub (access point) to
Space-division multiple access
Space-division_multiple_access
Fiber-optic communications technology
Arrayed waveguide grating – Optical multiplexer component Code-division multiple access – Channel access method used by various radio communication technologies
Wavelength-division multiplexing
Wavelength-division_multiplexing
Multi-user version of OFDM digital modulation
Orthogonal frequency-division multiple access (OFDMA) is a multi-user version of the popular orthogonal frequency-division multiplexing (OFDM) digital
Orthogonal frequency-division multiple access
Orthogonal_frequency-division_multiple_access
Method of combining multiple signals into one signal over a shared medium
multiple access (TDMA) and frequency-division multiple access (FDMA). Code-division multiplex techniques are used as an access technology, namely code-division
Multiplexing
Quadrature-division multiple access (QDMA) is a radio protocol. The term combines two standard terms in telecommunications, CDMA and QPSK. QDMA is used
Quadrature-division multiple access
Quadrature-division_multiple_access
Digital communications term
spectrum (DSSS) code, such as a pseudo-random noise (PN) code sequence used in direct-sequence code-division multiple access (CDMA) channel access techniques
Chip_(CDMA)
Radio signal transmission method
a code known to both transmitter and receiver. FHSS is used to avoid interference, to prevent eavesdropping, and to enable code-division multiple access
Frequency-hopping spread spectrum
Frequency-hopping_spread_spectrum
American telecommunications company
mobile telecommunications network in the United States using code-division multiple access (CDMA). In 2013, the carrier engaged in a reverse merger with
Metro_by_T-Mobile
Italian-American engineer and businessman
not patent the algorithm. Viterbi also helped to develop the Code Division Multiple Access (CDMA) standard for cell phone networks. Viterbi was the cofounder
Andrew_Viterbi
CAVE-based Authentication CDG – CDMA Development Group CDMA – Code Division Multiple Access CDR – Call Detail Record Cell site CIBER – Cellular Intercarrier
List_of_CDMA_terminology
Method of encoding digital data on multiple carrier frequencies
multiple access using time, frequency or coding separation of the users. In orthogonal frequency-division multiple access (OFDMA), frequency-division
Orthogonal frequency-division multiplexing
Orthogonal_frequency-division_multiplexing
Collective term for network equipment of UMTS
UMTS Terrestrial Radio Access Network (UTRAN) is a collective term for a kind of network and equipment that connects mobile handsets to the public telephone
UMTS Terrestrial Radio Access Network
UMTS_Terrestrial_Radio_Access_Network
Telecommunication company in Cameroon
company is keen to building its network, including: Access to a CDMA (Code Division Multiple Access) network; digitization of the country's telephone exchanges;
Camtel
American semiconductor company
Jacobs and six other co-founders, Qualcomm's early research into code-division multiple access (CDMA) wireless technology was financed through revenue from
Qualcomm
Family of 3G mobile technology standards
broadband Internet access. It uses multiplexing techniques including code-division multiple access (CDMA) as well as time-division multiple access to maximize
CDMA2000
Iranian engineer
Iranian electrical and computer engineer, pioneer of optical code division multiple access (CDMA) and named Highly Cited Researcher. He is also a board
Jawad_Salehi
Type of digital communication link sharing
orthogonal frequency division multiple access (RFH-OFDMA) Code-division multiple access (CDMA), where different amount of spreading codes or spreading factors
Statistical time-division multiplexing
Statistical_time-division_multiplexing
American electrical engineer
known for his seminal work in Neuromorphic Photonics, optical code division multiple access (OCDMA) and the invention of the terahertz optical asymmetric
Paul_Prucnal
Smartphone developed by Samsung
Telecommunications. It is the Code-division multiple access (CDMA) version of the Samsung Corby series of phones. It also allows users to access the internet at a
Samsung_Corby_Speed
Telecommunications standard for the wireless transmission of data through radio signals
advanced multiplexing techniques including code-division multiple access (CDMA) as well as time-division multiplexing (TDM) to maximize throughput. It
Evolution-Data_Optimized
First CDMA-based digital cellular technology
Telecommunications Industry Association (TIA). cdmaOne used code-division multiple access (CDMA), a multiple access scheme for digital radio, to send voice, data and
CdmaOne
Application development platform
application development platform created by Qualcomm, originally for code division multiple access (CDMA) mobile phones, featuring third-party applications such
Binary Runtime Environment for Wireless
Binary_Runtime_Environment_for_Wireless
Telecommunications concept
different techniques of access (TDMA, FDMA, CDMA, SDMA). See Cellular concepts. Let a case of Code Division Multiple Access be considered for the relationship
Cellular_traffic
is often used to define the capacity of systems using CDMA (code-division multiple access). A. J. Viterbi "CDMA: Principles of Spread Spectrum Communication"
Rise_over_thermal
Topics referred to by the same term
exhibited at a specified age Multiple Access Interference, a type of interference that occurs in code-division multiple access (CDMA) systems Mycobacterium
Mai
Error-correcting code
word have been corrupted. In code-division multiple access (CDMA) communication, the Hadamard code is referred to as Walsh Code, and is used to define individual
Hadamard_code
device testing and certification Global Certification Forum "» Code Division Multiple Access (CDMA) Certification Forum International Laboratory Accreditation
CDMA_Certification_Forum
Topics referred to by the same term
carrier Chip (CDMA), the fundamental unit of transmission in code-division multiple access (CDMA) Chip (GUI), a graphical user interface element for input
Chip
2G mobile-phone standard that uses time-division multiple access
including GSM. D-AMPS competed against GSM and systems based on code-division multiple access (CDMA). It is now considered end-of-life, as existing networks
Digital_AMPS
System spectral efficiency of communication system
channels and supplemental channels. The forward link of a 3G code-division multiple-access (CDMA) system may become a limiting factor when the number of
CDMA_spectral_efficiency
Air interface for 4G and 5G broadband wireless communications
other popular air interfaces such as time-division multiple access (TDMA) and code-division multiple access (CDMA), the combination of MIMO and OFDM is
MIMO-OFDM
UMTS standards CDMA: Code-division multiple access TDMA: Time-division multiple access FDMA: Frequency-division multiple access Lee, William (2006). Wireless
Opportunity-Driven Multiple Access
Opportunity-Driven_Multiple_Access
Study of the properties of codes and their fitness
is code-division multiple access (CDMA). Each phone is assigned a code sequence that is approximately uncorrelated with the codes of other phones.[citation
Coding_theory
Packet-oriented mobile data service for 2G and 3G networks
performance, with a peak bit-rate of up to 1 Mbit/s. Code-division multiple access (CDMA) High Speed Packet Access (HSPA/HSDPA/HSUPA) IP Multimedia Subsystem List
GPRS
Topics referred to by the same term
MC-CDMA may stand for: Multi-carrier code-division multiple access, a multiple access technology used in telecommunication systems based on OFDM. A variant
MC-CDMA
Direction from which a signal is received
rates. In multiple access channels (code-division multiple access (CDMA), frequency-division multiple access (FDMA), time-division multiple access (TDMA))
Direction_of_arrival
Radio receiver
coherently to improve the information reliability. A rake receiver utilizes multiple correlators to separately detect the M strongest multipath components.
Rake_receiver
Telecommunications networks transmitted by radio waves
multiplexing and access schemes: frequency-division multiple access (FDMA), time-division multiple access (TDMA), code-division multiple access (CDMA), and
Cellular_network
Authentification protocol
CAVE-based authentication is a security protocol used to verify access in CDMA2000 1X, a type of third-generation (3G) mobile network system. The term
CAVE-based_authentication
provider to offer global System for mobile communications and code-division multiple access services in both wireline and Wireless mode. The Versatile Service
Versatile_Service_Engine
US Space Force communications satellite system
during the transition to MUOS, and the advanced MUOS Wideband Code Division Multiple Access (WCDMA) capability, according to Naval Information Warfare Systems
Mobile_User_Objective_System
eXtensions CD—Compact Disc CDE—Common Desktop Environment CDMA—Code-division multiple access CDN—Content delivery network CDP—Cisco Discovery Protocol CDP—Continuous
List of computing and IT abbreviations
List_of_computing_and_IT_abbreviations
American telecommunications company (1996-2006)
between 1996 and 1999, the production of first generation CDMA (Code-division multiple access) minicells needed for cellular phone carriers. A 1,015-lb second
Lucent_Technologies
Authentication protocol used in 3G networks
AKA is also used for one-time password generation mechanism for digest access authentication. AKA is a challenge–response based mechanism that uses symmetric
Authentication and Key Agreement
Authentication_and_Key_Agreement
Research institute in Daejeon, South Korea
developed TDX (Time Division Exchange) and 4M DRAM (Dynamic Random Access Memory). In the 1990s, ETRI commercialized Code-division multiple access. In the 2000s
Electronics and Telecommunications Research Institute
Electronics_and_Telecommunications_Research_Institute
Computer security procedure
authorization, and accounting (AAA) is a framework used to control and track access within a computer network. Authentication is concerned with proving identity
Authentication, authorization, and accounting
Authentication,_authorization,_and_accounting
American and Canadian electrical engineer
Her dissertation, Interference Suppression in Spread Spectrum Code Division Multiple Access, was supervised by Vincent Poor. Rusch was named an IEEE Fellow
Leslie_Rusch
Signals broadcast by GPS satellites
different ranging codes. In other words, GPS uses code-division multiple access. The ranging codes are also called chipping codes (in reference to CDMA/DSSS)
GPS_signals
Multipath mitigation is a term typically used in Code Division Multiple Access (CDMA) communications and in GNSS navigation to describe the methods that
Multipath_mitigation
Signal processing technique for sensor arrays
Passive mode: (almost) non-standardized solutions Wideband code division multiple access (WCDMA) supports direction of arrival (DOA) based beamforming
Beamforming
nodes. In a network with code-division multiple access (CDMA) MAC protocol, each transmitter modulates its signal by a code that is orthogonal to that
Stochastic geometry models of wireless networks
Stochastic_geometry_models_of_wireless_networks
Technology used for cellular communication
on TDMA cdmaOne: Code Division Multiple Access defined by IS-95 PDC: Personal Digital Cellular TDMA: Time Division Multiple Access 2.5G: A set of transition
Mobile_technology
Frequency-division multiple access scheme
Single-carrier FDMA (SC-FDMA) is a frequency-division multiple access scheme. Originally known as Carrier Interferometry, it is also called linearly precoded
Single-carrier_FDMA
Authentication (Access Authentication for 1xEV-DO) is a CHAP-based mechanism used by a CDMA2000 Access Network (AN) to authenticate a 1xEV-DO Access Terminal
A12_Authentication
Optical engineer and academic administrator
her Ph.D. in 1993. Her dissertation, High-Throughput Optical Code-Division Multiple Access Communication Systems, was supervised by Behnaam Aazhang. She
Maïté_Brandt-Pearce
Cellular telephone network standard since 1991
network optimized for full duplex voice telephony, employing time division multiple access (TDMA) between stations. This expanded over time to include data
GSM
Voice communications system for use within a local area
other providers use GSM, while Sprint and Verizon use CDMA (Code Division Multiple Access) technology. Modern cell phone intercoms support all carriers
Intercom
Radio standard
is transmitted in interleaved time allocations or "slots." Code-Division Multiple Access (CDMA) systems allow many users to share a common spectrum allocation
NXDN
City in Tamil Nadu, India
provider. Both Global System for Mobile Communications (GSM) and Code division multiple access (CDMA) mobile services are available. Apart from telecom, BSNL
Madurai
Engineer and researcher
standards, flawless voice- and video-compression, turbo coding, multi-carrier code-division multiple access (MC-CDMA), OFDM, MIMO systems, just to name a few
Lajos_Hanzo
Metropolis and state capital of Bihar, India
provider. Both Global System for Mobile Communications (GSM) and Code division multiple access (CDMA) mobile services are available. Apart from telecom, BSNL
Patna
space–time codes. MIMO – Wireless communication systems having multiple antennas at both transmitter and receiver. CDMA – Code division multiple access http://acronyms
Multipacket_reception
Technology used to provide broadband to the end consumer via fiber
ISBN 978-0-470-74180-1. Kitayama, Ken-Ichi (10 April 2014). Optical Code Division Multiple Access: A Practical Perspective. Cambridge University Press. ISBN 978-1-107-02616-2
Passive_optical_network
Israeli engineer
specialized areas of telecommunications and coding, including: Coding technologies CDMA (Code Division Multiple Access) technology Wireless Local Area Network
Ephraim_Zehavi
Cable assembly containing one or more optical fibers that are used to carry light
April 25, 2016. Kitayama, Ken-Ichi (April 10, 2014). Optical Code Division Multiple Access: A Practical Perspective. Cambridge University Press. ISBN 978-1-107-02616-2
Fiber-optic_cable
Research and scientific development company
Yokosuka, Japan for developing a third generation Wideband Code Division Multiple Access cellular system (W-CDMA.) In 1997, the smallest then-practical
Bell_Labs
cells, which then use TDMA to separate users within the cell. Code-division multiple access (CDMA) This uses a digital modulation called spread spectrum
Comparison of mobile phone standards
Comparison_of_mobile_phone_standards
Copying of one cellular device's identity to another
fingerprinting to detect the clones. Code-Division Multiple Access (CDMA) mobile telephone cloning involves gaining access to the device's embedded file system
Phone_cloning
Type of shift register in computing
the same channel at the same time and frequency, it is called code-division multiple access. Neither scheme should be confused with encryption or encipherment;
Linear-feedback shift register
Linear-feedback_shift_register
American video game and gambling machine company
have included: ITNet server-based technology, employing CDMA (Code Division Multiple Access), which compiles statistics such as player scores and tournament
Incredible_Technologies
American businessman, founder of Qualcomm (born 1933)
efficiently than the older fixed time-sliced TDMA technology. Its Code-Division Multiple Access (CDMA) has been adopted as one of two digital standards (the
Irwin_M._Jacobs
Speech codec used by CDMA2000 networks
Mode Vocoder (SMV) is variable bitrate speech coding standard used in CDMA2000 networks. SMV provides multiple modes of operation that are selected based
Selectable_Mode_Vocoder
key in realizing ultra high speed optical networks, Optical Code Division Multiple Access (OCDMA) systems, chemical and biological reaction triggering
Femtosecond_pulse_shaping
South Korean engineer and government minister (1934–2024)
tenure at SK Telecom, he worked on the commercialization of Code-division multiple access (CDMA) technology in South Korea. In March 1999, he was appointed
Seo_Jung-wook
Israeli electrical engineer
Guillermo E. (2005-10-01). "Performance of Haar wavelet based scale-code division multiple access (HW/S-CDMA) using decorrelating multi-user detector". Computers
Shlomo_Rakib
Wireless data distribution method
System for Mobile Communications (GSM), time-division multiple access (TDMA), code-division multiple access (CDMA), and Digital Enhanced Cordless Telecommunications
Wireless_local_loop
Orthogonal matrix
Walsh matrix. Haar wavelet Quincunx matrix Hadamard transform Code-division multiple access OEIS: A228539 (OEIS: A228540) – rows of the (negated) binary
Walsh_matrix
Term in wireless communications
modulation schemes such as orthogonal frequency-division multiplexing (OFDM) and code-division multiple access (CDMA) are well-suited to employing frequency
Fading
carrier-sense multiple access (CSMA), frequency-division multiple access (FDMA) or code-division multiple access (CDMA). The varying topology of the network
Mobile wireless sensor network
Mobile_wireless_sensor_network
later revoked. The company rolled out a 3G wireless (based on Code Division Multiple Access (CDMA)) national network benefiting from the demand for data
Sasatel_(Dovetel)
Concept in mathematics
properties significantly outperform the traditional Walsh codes in code division multiple access (CDMA) communications. Applications of the Walsh functions
Walsh_function
Type of two-dimensional barcode
a QR code using their mobile devices, up by 26 percent compared to 2020. The majority of QR code users used them to make payments or to access product
QR_code
Defunct telecommunications company in the Philippines
Telephone System (CMTS) using Global System for Mobile (GSM) and/or Code Division Multiple Access (CDMA) technology. Consequently, Digitel has been building a
Digital Telecommunications Philippines
Digital_Telecommunications_Philippines
Indian electrical engineer
in 1978 and 1979, respectively. His PhD was on the topic of code division multiple access (CDMA) under the guidance of the late Prof. Stephen Rapapport
Dipankar_Raychaudhuri
American electrical engineer and academic
frame. Richard D. Gitlin and Chih-Lin I, “Code division multiple access system providing variable data rate access,” US Patent 5,442,625, August 15, 1995
Richard_D._Gitlin
Real-time operating system
Cameras[citation needed] SK Telecom's first commercialization of code-division multiple access (CDMA) technology in Korea[citation needed] MediaTek MT62xx
Nucleus_RTOS
Process of varying one or more properties of a periodic waveform
multi-user channel access method in the orthogonal frequency-division multiple access (OFDMA) and multi-carrier code-division multiple access (MC-CDMA) schemes
Signal_modulation
radio telephone, the first to use code-division multiple access. 1965 – Chandros Rypinski, Jr. patents the first multiple-channel radio telephone system
History_of_communication
Problem in wireless networking
coordination function Wireless LAN Buehrer, R. Michael (2006). Code Division Multiple Access (CDMA) (1st ed.). [San Rafael, Calif.]: Morgan & Claypool Publishers
Hidden_node_problem
Semiconductor laser
photonic sampling for analog-to-digital conversion, and optical code-division-multiple-access systems for secure communication. Laser diodes are used as a
Laser_diode
Use of multiple antennas in radio
enable more aggressive frequency reuse in the early 1990s. Space-division multiple access (SDMA) uses directional or smart antennas to communicate on the
MIMO
Dutch electrical engineer
California, Berkeley. In 1993, he introduced Multi-carrier code-division multiple access (Multi-Carrier CDMA). From 1994 to 1995, he served as an associate
Jean-Paul_Linnartz
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