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Associated Carrier Group
Associated Carrier Group (ACG) is an industry association of US CDMA cellular network operators. Mission ACG's stated mission is "to benefit both its members and the consumer by facilitating efficient production and marketing of devices as well as increased competition. The consortium enables its members to work with manufacturers, suppliers and other vendors to develop and procure, for its customers, scarce or unobtainable products in a timely fashion through economies of scale and standardization of coding and other features." Members *Alaska Communications Systems (ACS) * Alaska Digitel (GCI) *Alltel (acquired by Verizon Wireless, some assets sold to AT&T and Atlantic Tele-Network) * Appalachian Wireless * Bluegrass Cellular acquired by Verizon Wireless * Carolina West Wireless * Cellcom * Cellular One of Northeast Pennsylvania *Cellular South became cSpire * Copper Valley Wireless *Cox Communications * ETEX * Golden State Cellular acquired by Verizon Wireless * Illinois Valley C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CDMA
Code-division multiple access (CDMA) is a channel access method used by various radio communication technologies. CDMA is an example of multiple access, where several transmitters can send information simultaneously over a single communication channel. This allows several users to share a band of frequencies (see bandwidth). To permit this without undue interference between the users, CDMA employs spread spectrum technology and a special coding scheme (where each transmitter is assigned a code). CDMA optimizes the use of available bandwidth as it transmits over the entire frequency range and does not limit the user's frequency range. It is used as the access method in many mobile phone standards. IS-95, also called "cdmaOne", and its 3G evolution CDMA2000, are often simply referred to as "CDMA", but UMTS, the 3G standard used by GSM carriers, also uses "wideband CDMA", or W-CDMA, as well as TD-CDMA and TD-SCDMA, as its radio technologies. It can be also used as a channel or m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
