patcat88
join:2002-04-05
Jamaica, NY
| reply to AllCingularUser
Re: Better for Promoting CDMA Abroad
CDMA is a digital modulation scheme, involing vectors, walsh codes, and psudorandom numbers. Nothing more.
Qualcomm Corp, makes a product called "IS2000" also called "CDMA2000", it is an upgrade of "IS-95", also there is a product called "IS-856, aka "EVDO". These are protocols that use CDMA modulation/multiple access. CDMA is a digital modulation/encoding, nothing more. It doesn't allow for cellphone, phone calls, internet, or anything else, it only allows multiple users on 1 communication medium.
GSM family decided to use CDMA modulation since it was more efficient than TDMA used in GSM. Their product is called "WCDMA", WCDMA and CDMA2000 only share a digital mutiple access technology, nothing more.
Are you also going to say next that sim-less old ATT Wireless handsets, also called "TDMA" are the same thing as GSM handsets? |
