3G 数据传输介绍--Free

3G_Data_Lesson_Pre-introCDMA 3G Data and Capacity Overview

Pre-lesson introduction

NORTEL NETWORKS CONFIDENTIAL

CDMA 3G Data and Capacity Overview - February, 2001 Issue 1.8

0

CDMA Solution Profiles 1G 2G
CDMA 3G Data and Capacity Solutions (1xRTT)
IS-2000 cdma2000 1.25 MHz High Speed Packet Data (up to 144 kbps)

3G

Analog Voice



IS-95 cdmaOne 1.25 MHz Wireline Quality Digital Voice Circuit Data

Direct Spread/ Multi-carrier Mobile Multimedia (2 Mbps)

High Capacity Mobile Voice + Mobile High Speed Packet Data Enabling true mobile multimedia
1

Benefits of the cdma2000 1xRTT Standards
Increased mobile standby battery life (via Quick
Paging Channel)

Total backward compatibility to reuse switch and
call processing features

2-3 dB better coverage High speed 153.6 kbps packet data capabilit