Planning; Table 3: 5.4 Ghz Channel Center Frequencies, By Region; Table 4: 4.9 Ghz Channel Center Frequencies - Motorola PMP 400 Series Supplement To User’s Manual

PMP 400 and PTP 200 Series

3 Planning

PMP 400 and PTP 200 Series systems use a 10 MHz channel size configurable on 5 MHz
centers. This channel size, along with some different characteristics due to the use OFDM carrier
technology and QPSK, 16 QAM, or 64 QAM modulation, supports somewhat different channel
planning than for standard Canopy. (For reference, PMP 100/200 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.
(For reference, standard Canopy uses 2-channel re-use with clusters of 6 APs on a tower with
channel center spacing of either 25 MHz for Advantage APs or 20 MHz for non-Advantage APs.
This is ABCABC channel planning, with 5 MHz guard band between the 20 MHz channels for
Advantage APs and no guard band needed for non-Advantage.)
Available 5.4 GHz channel center frequencies for each region are shown in Table 3. These vary
by region due to
different band edge RF specifications (for example, between Canada/US and
•
Europe)
requirements in Europe and Canada to not impinge on the frequencies between 5600
•
and 5650 MHz, which are frequencies on which some weather radar operate

Table 3: 5.4 GHz Channel Center Frequencies, by Region

Region
US
Canada
Europe
US FSK (for comparison)
Canada FSK (for
comparison)
Available 4.9 GHz channel center frequencies are shown in Table 4.
Range of Center Frequencies
Available (MHz)
(on 5 MHz centers within this
range, inclusive)
4945 - 4985
Issue 3, January 2009
Range of Center Frequencies
Available (MHz)
(on 5 MHz centers within this
range, inclusive)
5480 - 5710
5480 – 5595, 5655 - 5710
5475 - 5595, 5655 - 5715
5495 - 5705
5495 - 5575, 5675 - 5705

Table 4: 4.9 GHz Channel Center Frequencies

Canopy User Guide Supplement
Maximum number of
non-overlapping
channels
24
18
20
11
7
Maximum number of
non-overlapping
channels
5
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