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

for networks based on the competing cdmaOne technology. UMTS uses wideband code-division multiple access (W-CDMA) radio access technology to offer greater...

developed by 3GPP2 as a backwards-compatible successor to second-generation cdmaOne (IS-95) set of standards and used especially in North America and South...

1985 by Irwin Jacobs and six other co-founders. Its early research into CDMA wireless cell phone technology was funded by selling a two-way mobile digital...

uses TDMA and FDMA for user and cell separation. UMTS, IS-95 and CDMA-2000 use CDMA. WiMAX and LTE use OFDM. Time-division multiple access (TDMA) provides...

first digital cellular technology that used code-division multiple access (CDMA). It was developed by Qualcomm and later adopted as a standard by the Telecommunications...

MC-CDMA may stand for: Multi-carrier code-division multiple access, a multiple access technology used in telecommunication systems based on OFDM. A variant...

(PN) code sequence used in direct-sequence code-division multiple access (CDMA) channel access techniques. In a binary direct-sequence system, each chip...

practical and effective uses of DSSS include the code-division multiple access (CDMA) method, the IEEE 802.11b specification used in Wi-Fi networks, and the Global...

done. Since 2008, new CDMA signals are being researched for use with GLONASS. The interface control documents for GLONASS CDMA signals was published in...

CDMA frequency bands or frequency ranges are the cellular frequencies designated by the ITU for the operation of cdmaOne and CDMA2000 mobile phones and...

time-division multiple access (TDMA, used by GSM) and code-division multiple access (CDMA, first used for PCS, and the basis of 3G) were developed. With FDMA, the...

AT&T, Cricket's CDMA network used its home network and roaming agreements with Sprint, among other CDMA carriers. However, Cricket's CDMA network was shut...

Operational Bulletin No. 1287". ITU. 1 March 2024. Retrieved 1 March 2024. "CDMA network shut down". Telus. 3 February 2017. Retrieved 3 March 2017. "ITU...

[citation needed] In North America, Digital AMPS (IS-54 and IS-136) and cdmaOne (IS-95) were dominant, but GSM was also used.[citation needed] In Japan...

CDMA spectral efficiency refers to the system spectral efficiency in bit/s/Hz/site or Erlang/MHz/site that can be achieved in a certain CDMA based wireless...

although some GSM sites can be retrofitted to broadcast in the UMTS/W-CDMA format. W-CDMA is the most common deployment, commonly operated on the 2,100 MHz...

FaceTime video chat service, and the first to be released in a version for CDMA networks, ending AT&T's period as the exclusive carrier of iPhone products...

A CDMA subscriber identity module (CSIM) is an application to support CDMA2000 phones that runs on a UICC, with a file structure derived from the R-UIM...

GLOBAL PASSPORT GSM & CDMA. URBANO BARONE - Designed for active elderly with large keypad function. It supports GLOBAL PASSPORT CDMA. BRAVIA Phone U1 - The...

appearance but instead of using the GSM standard, it used CDMA to operate on SK Telecom. It was the first CDMA version of the Razr without expandable memory, Bluetooth...

42.1 percent. Samsung developed its first CDMA mobile phone in March 1996, to coincide with the launch of CDMA service. The first digital handset, the SCH-100...

"CIS". Halberd Bastion. Retrieved 2020-05-14. "Market Opportunities for CDMA 450" (PDF). CDG. 6 June 2006. Retrieved 13 May 2015. "Nar launches 4G LTE...

to prevent eavesdropping, and to enable code-division multiple access (CDMA) communications. The frequency band is divided into smaller sub-bands. Signals...

and accounting. The AAA server in the CDMA wireless data network architecture is similar to the HLR in the CDMA wireless voice network architecture. Types...

providers support either CDMA or GSM; both are being supplanted by UMTS. Telus shut down its CDMA in mid-2015; Bell Mobility's CDMA network, the country's...

frequencies GSM frequency bands LTE frequency bands 5G NR frequency bands CDMA frequency bands Mobile network code Roaming United States 2008 wireless spectrum...

data. These phones include combination of GSM and CDMA technology. They can be used as a GSM or CDMA phone according to the user's preference. These handsets...

card developed for cdmaOne/CDMA2000 ("CDMA") handsets that extends the GSM SIM card to CDMA phones and networks. To work in CDMA networks, the R-UIM...

identifies five principal types of multiple-access schemes: FDMA, TDMA, CDMA, SDMA, and random access. R. Rom and M. Sidi (1990) categorize the protocols...