A
PPENDIX
B
| Hardware Specifications
WiMAX Specifications
– 45 –
W
I
MAX S
PECIFICATIONS
A
NTENNAS
Pattern: Omnidirectional
Transmit and Receive: One transmit and two receive with Maximal-Ratio
Combining (MRC). Support for transmitter diversity.
Gain: 6 dBi
Impedance: 50 Ohm
O
PERATING
F
REQUENCY
FCC-2.5: 2496-2690 MHz
Taiwan NCC: 2500-2690 MHz
Support for Full Scan and Partial Scan
C
HANNEL
B
ANDWIDTH
2.5 GHz model: 5 and 10 MHz
M
ODULATION
S
CHEME
Scaleable OFDMA employing Time-Division Duplex (TDD) mechanism
PRBS subcarrier randomization
Contains pilot, preamble, and ranging modulation
M
ODULATION
AND
C
ODING
T
YPES
Down Link: QPSK, 16 QAM, 64 QAM
Up Link: QPSK, 16 QAM
R
ECEIVE
S
ENSITIVITY
-94 dBm maximum
V
O
IP S
PECIFICATIONS
V
OICE
S
IGNALING
P
ROTOCOL
SIP v2 (RFC 3261)
V
OICE
C
ODEC
G.711 (a-law and u-law)
G.726
G.729ab
G.723.1
V
OICE
Q
UALITY
VAD (Voice Activity Detection)
CNG (Comfortable Noise Generation)