Characteristics - Nortel DCT1900 Technical Product Manual

Technical Product Manual - DCT1900
System Description, Other System Aspects

5.3.3 Characteristics

Frequency band
Number of carriers
Carrier spacing
Transmission
TDMA frame
TDMA slot
No. of slots per frame
Total number of channels
Bit rate
Speech coding
Modulation
5-2
: 1920-1930 MHz
: 8 adjacent
: 1.25 MHz in 1920-1930 MHz band;
: MC/TDMA/TDD (Multiple Carrier/ Time–Division Multiple Access/
Time–Division Duplexing)
: 10 ms
: 0.417 ms
: 24 (12 full duplex channels)
: 96 (88 available for speech)
: 1152 kbit/s
: 32 kbit/s ADPCM (Adaptive Differential Pulse Code Modulation)
: π /4 DQPSK (Differential Quadrature Phase Shift Keying) with RRC
baseband filtering with 50% bandwidth expansion (
∝
=0.5)
System-DCT1900/R8/mw
© 2000-2005