CDMA Certification Forum

From Wikipedia, the free encyclopedia

CDMA Certification Forum (CCF) is an international nonprofit partnership between CDMA operators and CDMA device vendors to establish and maintain a core global device certification process that helps improve quality through consistent interoperability, conformance and performance testing across the globe..

[edit] External links

• Official website

[edit] See also

• CDMA Development Group (CDG), an international consortium of companies who have joined together to lead the adoption and evolution of 3G CDMA wireless systems around the world
• CTIA-The Wireless Association, an international nonprofit membership organization founded in 1984, representing all sectors of wireless communications

v • d • e Spread spectrum in Digital Communications Main articles Spread spectrum & Code division multiple access History: Hedy Lamarr · Commercial use · More... Spread spectrum Methods Direct-sequence spread spectrum (DSSS) · Frequency-hopping spread spectrum (FHSS) · Chirp spread spectrum (CSS) · Time-hopping spread spectrum (THSS) CDMA Schemes W-CDMA · TD-CDMA · TD-SCDMA · DS-CDMA · FH-CDMA · MC-CDMA Major implementations Wi-Fi (IEEE 802.11) · Space Network (NASA) · GPS · Galileo · GLONASS · Bluetooth · Cordless phones: DECT Cellular: EV-DO Mobile · IS-95 (aka cdmaOne) · CDMA2000 (aka IS-2000) · Also: Qualcomm · Verizon Major concepts PN (pseudorandom noise) code · Chip · Near-far problem · Power spectral density (PSD) · Rake receiver · Low probability of intercept See also: Digital communication · Modulation · Statistical multiplexing · Waveform