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CDMA Certification Forum (known as CCF) was the original official authority governing CDMA Device certification.The CCF was an international partnership between network operator and device vendors [1] to maintain and evolve a core global device certification process that helps improve quality through consistent interoperability, conformance and performance testing across the globe.
All forms of CDMA use the spread-spectrum spreading factor to allow receivers to partially discriminate against unwanted signals. Signals encoded with the specified spreading sequences are received, while signals with different sequences (or the same sequences but different timing offsets) appear as wideband noise reduced by the spreading factor.
cdmaOne network structure. The IS-95 standards describe an air interface, [1] a set of protocols used between mobile units and the network. IS-95 is widely described as a three-layer stack, where L1 corresponds to the physical layer, L2 refers to the Media Access Control (MAC) and Link-Access Control (LAC) sublayers, and L3 to the call-processing state machine.
Multi-carrier code-division multiple access (MC-CDMA) is a multiple access scheme used in OFDM-based telecommunication systems, allowing the system to support multiple users at the same time over same frequency band. MC-CDMA spreads each user symbol in the frequency domain.
This includes the compiled binary file, a file that describes the application, the features it uses, and permissions requested, a file that contains string and image resources if required, and a file containing the application's digital signature. BREW applications may be unloaded from a consumer handset to save handset memory space.
From an initialism: This is a redirect from an initialism to a related topic, such as the expansion of the initialism.. Use {{R from acronym}} instead for abbreviations that are pronounced as words, such as NATO and RADAR.
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CDG – CDMA Development Group CDMA – Code Division Multiple Access CDR – Call Detail Record Cell site. CIBER – Cellular Intercarrier Billing Exchange Roamer Cibernet. CHAP – Challenge- Handshake Authentication Protocol aka (HDR – High Data Rate) Clearing. Clearinghouse. CLI – Calling Line Identification – See Caller ID