Radio Specifications |
|
Applicable standards: |
RCR STD-27B |
uplink (handset transmit): |
940-956 MHz and 1429-1453 MHz |
downlink (handset receive): |
810-826 MHz and 1477-1501 MHz |
multiple access scheme: |
TDMA (40 msec frame divided into 6 Tx or Rx slots of 6.66 msec duration. When half-rate codecs become practical, systems may switch to 12 time slots per frame) |
duplexing scheme: |
FDD/TDD (Tx and Rx are performed sequentially, not simultaneously) |
TX/RX spacing: |
130 MHz in the 800 MHz band; 48 MHz in the 1500 MHz band |
channel spacing: |
25 interleaved 50 kHz |
channel bit rate: |
42 kb/s |
full rate channels per carrier: |
6 |
modulation: |
pi/4 DQPSK, alpha=0.5 |
transmit power (mobile unit): |
class I: 3.0 W; class II: 2.0 W; class III: 0.8 W; class IV: 0.3 W (power output during Tx slot) |
transmit power (base station): |
not specified |
cell radius: |
0.5 - 20 km |
Coding algorithm: |
VSELP (11.2kbps) |
Delay Spread Equalization: |
option |