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Specifications
W-CDMA / UMTS / ITS-2000
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Frequency allocations
1885-2025 MHz, 2110-2200 MHz
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ITU |
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Europe |
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North America |
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Japan |
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1800 |
1900 |
2000 |
2100 |
2200 |
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Key: |
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G3 |
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MSS |
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other |
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Radio Specifications
- ITU (International Telecommunications Union) ITM-2000
minimum data rates:
- 144 kb/sec vehicular
- 384 kb/sec pedestrian
- 2 Mb/sec non-mobile
frequency:
1880-1980 IMT-2000; 1980-2010 MSS (satellite); 2010-2025 MSS reg2; 2110-2160 IMT-2000; 2160-2170 MSS Reg2; 2170-2200 MSS
- North America:
- TIA (Telecommunications Industry Association)TR-45 subcommittee
frequency:
1850-1990 PCS; 1990-2025 MSS; 2160-2200 MSS
spectrum: unsure if FCC will allocate any; use present 1900 MHz specturm?
Wideband cdmaOne
5 MHz BW.
Data rates to 2 Mbps
needs to be backwards compatible with 1G (AMPS ANSI-41) and 2G (IS-95 CDMA)
UWCC (Universal Wireless Communications Consortium) 3G TDMA (IS-136 compatible)
240 kHz BW(?)
others: possible TR-46 based GSM standard, more
- Europe:
- ETSI SMG subgroup
frequency:
1805-1880 (GSM); 1880-1900 DECT; 1900-1920 UMTS DECT; 1920-1980 UMTS; 1980-2010 MSS; 2110-2170 UMTS; 2170-2200 MSS
spectrum allocated
UMTS (Universal Mobile Telecommunications System)/WCDMA (Wideband Code Division Multiple Access) (Nokia, Ericsson, Telecom Finland, Telecom Italia Mobile)
compatible with NTT DoCoMo
UMTS has a FRAMES approach and uses a different numerology and techniques than Wideband cdmaOne.
access method: DS-CDMA, FDD
(Ericsson demo)
- base tx:2110-2130 rx: 1920-1940
- carrier BW: 5 MHz
- Number of carriers: 2/sector
- number odf sectors: 6/BTS
- Average Power max: 20 W /sector
- chip rate: 4096 Mcps
- frame length: 10 ms
- BTS power control: 20 dB control range
- 1 dB control step
- 0.625 ms control cycle
vs 1.25 MHz BW CDMA:
- wider channel for better frequency diversity, reduced fading problems, better statistical averaging effects
coherent demodulation in the uplink improves coverage
- improved power control, due to faster acontrol and less fading effects in wider channel
- built in support for adaptive antenna arrays; multi-user detection; hierarchical cell structures; independance from GPS (no synchronization)
TD/CDMA (Siemens, Alcatel, ItalTel, Nortel, Bosch, Motorola, Sony)
hybrid system employing both TDMA and CDMA
- Japan:
- ARIB (Association of Radio Businesses)
frequency:
1895-1920 PHS; 1920-1980 3g gen; 1980-2010 MSS; 2110-2170 3d gen; 2170-2200 MSS
spectrum allocated
NTT DoCoMo (NTT, Japan Telecom)
5 MHz BW.
Mixed services from 8 kbps to 2 Mbps
Wideband cdmaOne
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List of Standards
- EIA PN-3502- W CDMA (Wideband Code Division Multiple Access) Air Interface Compatibility Standard for 1.85 1.99 GHz PCS Applications
Links to more information:
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