PMP 400/430 and PTP 200/230 Series
Motorola PMP Solutions User Guide Supplement
Issue 6.0 May 2011
Page 34 of 77
3
Planning
PMP 400 and PTP 200 Series systems use 10 MHz channel bandwidth configurable on 5 MHz
channel centers while the PMP 430 Series is configurable with a 5, 10 or 20 MHz channel
bandwidth and the PTP 230 Series is configurable with a 10 or 20 MHz channel bandwidth. When
a PMP 430 is configured with 5 MHz channel bandwidth, the radio is configurable on 2.5 MHz
center channels and is configurable on 5 MHz center channels when it is configured for either 10
or 20 MHz channel bandwidth.
This channel size, along with some different characteristics due to the use OFDM carrier
technology and QPSK, 16 QAM, or 64 QAM modulations, supports somewhat different channel
planning than for standard Canopy. (For reference, PMP 100 Series uses 20 MHz channels
configurable on 5 MHz centers, single carrier technology, and 2-level and 4-level FSK
modulation.)
3.1
TOWER CHANNEL PLANNING
For a single cluster of 4 APs on a tower, 2-channel re-use with channels on 10 MHz channel
center spacing gives good performance. In channel design parlance, this can be stated as ABAB
channel planning, with no guard band needed between A and B. A typical arrangement might be
to use radios configured for 5480 MHz aimed north and south, and radios configured for 5490
MHz aimed east and west.
Available 5.8 GHz channel center frequencies for each region are shown in
Table 9
. These vary
by region due to different band edge RF specifications (for example, between Canada/US and
Europe).
Table 9: 5.8 GHz Channel Center Frequencies, by Region
Channel
Bandwidth
Region(s)
Range of Center
Frequencies
Available (MHz)
Center
Channel
Spacing
# of
center
channels
# of non-
overlapping
channels
5MHz
United States,
Canada, Australia,
Brazil and Russia
5727.5
–5845
2.5MHz
48
24
Europe and Other
5727.5
–5872.5
2.5MHz
59
30
India
5827.5
–5872.5
2.5MHz
19
10
10MHz
United States,
Canada, Australia,
Brazil and Russia
5730
– 5845
5MHz
24
12
Europe and Other
5730
– 5870
5MHz
29
15
India
5830
– 5870
5MHz
9
5
20MHz
United States,
Canada, Australia,
Brazil and Russia
5735
– 5840
5MHz
22
6
Europe and Other
5735
– 5865
5MHz
27
7
India
5835
– 5865
5MHz
7
2
20MHz FSK
(for
comparison)
United States,
Canada, Europe
and Australia
5735
– 5840
5MHz
22
6