CDMA2000® 1xRTT

CDMA2000 1xEV-DOTechnology Overview

CDMA2000®, also known as CDMA2000 1xRTT, 1X or IS-2000, is a 3G mobile telecommunications standard for wireless transmission of voice and data through networks deployed worldwide.

CDMA2000, being derived from IS-95, is containing 64 more traffic channels more on the Forward Link that are orthogonal to the original ones. Radio Channel Bandwidth of CDMA2000 is 1.25 MHz.

Peak Data Rates on the Forward Link are limited to 153 kbit/s on both links in Release 0 and to 307 kbit/s in Release 1.

CDMA2000 is based on CDMA (Code Division Multiplexing), where all users share the same 1.25 MHz wide channel, but using individual PN (Pseudo Noise) sequences for differentiation. CDMA2000 provides downward compatibility with cdmaOne (IS-95).

Deployment Scanario

CDMA2000, as the first IMT-2000 technology, was deployed worldwide in October 2000, excepted in Central Europe.

Most of the existing cdmaOne networks were updated to CDMA2000. In the upward development of 3GPP2 technologies with 1xEV-DO, Hybrid Mode was introduced to enable data transmission between base station and terminal either with CDMA2000 or 1xEV-DO. CDMA2000 and all 1xEV-DO technologies also operate on the CDMA2000® frequency bands.

Key Parameters

CDMA2000® 1xRTT
Frequency Range Show / Hide
BC0) 800 MHz Band
UL: 815 MHz - 849 MHz
DL: 860 MHz - 894 MHz
BC1) 1900 MHz Band
UL: 1850 MHz - 1910 MHz
DL: 1930 MHz - 1990 MHz
BC2) TACS Band
UL: 872 MHz - 915 MHz
DL: 917 MHz - 960 MHz
BC3) JTACS Band
UL: 887 MHz - 925 MHz
DL: 832 MHz - 870 MHz
BC4) Korean PCS Band
UL: 1750 MHz - 1780 MHz
DL: 1840 MHz - 1870 MHz
BC5) 450 MHz Band
UL: 410 MHz - 483 MHz
DL: 420 MHz - 493 MHz
BC6) 2 GHz Band
UL: 1920 MHz - 1980 MHz
DL: 2110 MHz - 2170 MHz
BC7) 700 MHz Band
UL: 776 MHz - 794 MHz
DL: 746 MHz - 764 MHz
BC8) 1800 MHz Band
UL: 1710 MHz - 1785 MHz
DL: 1805 MHz - 1880 MHz
BC9) 900 MHz Band
UL: 880 MHz - 915 MHz
DL: 925 MHz - 960 MHz
BC10) Secondary 800 MHz Band
UL: 806 MHz - 901 MHz
DL: 851 MHz - 940 MHz
BC11) 400 MHz European PAMR Band
UL: 410 MHz - 483 MHz
DL: 420 MHz - 493 MHz
BC12) 800 MHz PAMR Band
UL: 870 MHz - 876 MHz
DL: 915 MHz - 921 MHz
BC13) 2.5 GHz IMT-2000 Extension Band
UL: 2500 MHz - 2570 MHz
DL: 2620 MHz - 2690 MHz
BC14) US PCS 1.9 GHz Band
UL: 1850 MHz - 1915 MHz
DL: 1930 MHz - 1995 MHz
BC15) AWS Band
UL: 1710 MHz - 1755 MHz
DL: 2110 MHz - 2155 MHz
BC16) US 2.5 GHz Band
UL: 2502 MHz - 2568 MHz
DL: 2624 MHz - 2690 MHz
Modulation QPSK, OQPSK, HPSK
Multiple Access CDMA
Duplex (Uplink/Downlink) FDD
Channel Bandwidth 1.25 MHz
Peak Data Rate 307.7 kbit/s

Standardization

CDMA2000 was specified by 3GPP2 (3rd Generation Partnership Project 2). The following link provides access to 3GPP2 specifications: http://www.3gpp2.org/Public_html/specs/index.cfm