CDMA2000 Measurements
R&S
®
CMW-KG8xx/-KM8xx/-KS8xx
725
User Manual 1173.9511.02 ─ 11
Band
Class
Number
Band Class Name
Channel
Number N
Center Frequency
[MHz]
Band
Class
Group
15
AWS Band
0 to 899
1710 + 0.05 N
1900
16
US 2.5 GHz Band
140 to 1459
2495 + 0.05 N
1900
18
Public Safety Band 700 MHz
0 to 240
787 + 0.05 N
800
19
Lower 700 MHz
0 to 360
698 + 0.05 N
800
5.2.5.2
Radio Configurations
The CDMA2000 standard defines several radio configurations. A radio configuration
defines a set of forward traffic channel and reverse traffic channel transmission formats
that are characterized by physical layer parameters such as transmission rates, modu-
lation characteristics, and spreading rate.
The supported reverse channel radio configurations are listed in the table below.
Radio Configuration
Spreading Rate
Modulation
1
1
O-QPSK
2
1
O-QPSK
3
1
H-PSK or QPSK
4
1
H-PSK
5
3
H-PSK
6
3
H-PSK
The R&S
CMW supports only spreading rate 1 (also called 1x). Spreading rate 3 (3x) is
not supported.
For spreading rate 1 the reverse CDMA channel uses a carrier with a chip rate of
1.2288 Mcps.
5.2.5.3
Channelization
CDMA2000 channels are spread using orthogonal Walsh functions W
n
N
defined in
terms of the order N of the function and the index n ranging from 0 to N-1. This index is
also called channelization code number. The Walsh functions are serially constructed
from a N x N Hadamard matrix, generated by means of the following recursive proce-
dure defined in 3GPP2 C.S0002:
General Description
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