Introduction to cdma2000 Standards for Spread
Spectrum Systems


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OVERVIEW

The cdma2000 Family of Standards
The cdma2000 family of standards includes core air interface, minimum performance, and
service standards (see 1.3). The cdma2000 air interface standards specify a spread
spectrum radio interface that uses Code Division Multiple Access (CDMA) technology to
meet the requirements for Third Generation (3G) wireless communication systems. The
core air interface standards in the family are [1, 2, 3, 4, 5]. In addition, the family includes
a standard [6] that specifies analog operation, to support dual-mode mobile stations and
base stations.

Architecture

Figure 1 depicts the general architecture of cdma2000. Development of the cdma2000
family of standards has, to the greatest extent possible, adhered to the architecture by
specifying different layers in different standards.

Relationship to TIA/EIA-95-B
cdma2000 provides full backward compatibility with TIA/EIA-95-B. Backward
compatibility permits cdma2000 infrastructure to support TIA/EIA-95-B mobile stations
and permits cdma2000 mobile stations to operate in TIA/EIA-95-B systems.
The cdma2000 family also supports reuse of existing TIA/EIA-95-B service standards, such
as those that define speech services, data services, Short Message Services, and Over the
Air Provisioning and Activation services, with the cdma2000 physical layer.
cdma 2000 supports handoff of voice and data calls and other services from a TIA/EIA-95-B
system to a cdma2000 system.