EVDO
transmission of data using radio signals mainly for broadband Internet access. EVDO
standards follow the 3G protocol and uses CDMA (Code Division Multiple Access) for
quick data transfer of 500 to 1000 kilobits per second. EVDO is not compatible with GSM
networks. EVDO can be used to allow multiple devices within a limited area to access
high speed Internet.
EVDO is an evolution of the CDMA2000 standard which allows high speed data
transfer alongside the wireless service provider's voice transmission services. EDVO
is similar to CDMA2000 in terms of its bandwidth size of 1.25MHz, but its channel
structure is quite diff erent.
The backend system of EVDO works on a packet based system and hence is
not held back by restrictions of a circuit based network. However, the
EVDO standard faces a lot of competition. Motorola proposed
1Xtreme, a standard which was dubbed as an evolved
version of EVDO.
This was however later rejected by the 3G
standardization body. A host of other companies like
Qualcomm, Nokia, Lucent and a few others devised
a new standard called EVDV or Evolution Data and
Voice. This new standard was backward compatible
and did not require an overlay network when used in
mixed mode.
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