CDMA Evolution: cdma2000 1xEV-DV
White Paper
White Paper
To meet the coming need for
mobile wireless packet data
services, 3G standardization
bodies and others interested
in the advancement of CDMA
technologies have sought to
refine and commercialize
specifications capable of
delivering higher data
throughputs.
The cdma2000® specification
has recently undergone an
important evolutionary step
designed to achieve this
objective. With the
emergence of cdma2000 1x
Evolution Data and Voice
(1xEV-DV), network operators
can enjoy measurably higher
data throughput while
simultaneously delivering
coexisting voice services
within the same radio
frequency carrier.
This Nokia White Paper
evaluates the development,
technical features and
performance advantages of
1xEV-DV.
1
Introduction
Introduction
1
Executive Summary
2
New 1xEV-DV Features
5
Forward link capacity
5
Backward Compatibility
5
Concurrent Voice and Data
5
Multiple Traffic Types
5
New Channels
5
TDM/CDM Multiplexing
5
Hybrid ARQ
6
Adaptive Modulation and Coding
6
Cell Selection
6
Subscriber Benefits
7
Operator Benefits
8
1xEV-DV in the Marketplace
9
Real Time Gaming
9
Voice over IP
9
The 1xEV-DV Business Case
10
Benefits of 1xEV-DV
11
Conclusion
12
Nokia and 1xEV-DV
12
Contents
White Paper
2
While the primary objective
of 2G networks was to
provide mobile circuit
switched voice and low rate
data services, a key goal of
the evolution to 3G networks
was the introduction of
connectivity to packet data
networks via cellular systems
while at the same time
increasing voice capacity.
Early definitions of 3G
systems sought to boost the
gross bit rates over radio, and
to introduce support for QoS
classes to improve packet-
switched bearer services. As
demand for both greater
capacity and more packet
data services has grown, the
industry has sought to
improve 3G data throughput
while at the same time
enhancing voice performance
over the same RF carrier.
1xEV-DV technology was
developed to meet these
requirements and is first
included in IS-2000 Revision C
(also kn