Code Division ListBox ACCESS,CDMA

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Also known as Code Division Multiple access, is a wireless communication technology, CDMA allows all users to use all the band (1.2288Mhz), and other users to send signals as noise, do not have to consider the problem of signal collision (collision). CDMA in the voice coding technology, so that the quality of the call is better than the current GSM, and the user can talk when the ambient noise reduction, so that the call clearer. In terms of security performance, CDMA has a good authentication system, because of its transmission characteristics, using code to differentiate users, anti-theft listen to enhance the function. Wideband CDMA (WCDMA) Wideband Code Division Multiple Access Transmission technology, as an important basic technology of IMT-2000, will be one of the standards of the third generation digital wireless communication system.

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