User guide

Canopy System User Guide Understanding Bandwidth Management
pmp-0229 (Mar 2013)
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Table 23: OFDM module performance at 1X, 2X, and 3X operation
Product
Performance
Specification
Performance Details
1X 2X 3X
PMP 49400
PTP 49200
Modulation QPSK 16 QAM 64 QAM
Typical Maximum Range 15 mi (24 km) 4 mi (6.5 km) 2 mi (3.2 km)
Typical Maximum
Aggregate Throughput
7 Mbps 14 Mbps 20 Mbps
Nominal Receive Sensitivity
including FEC
−89 dBm −80 dBm −71 dBm
Latency 5−7 ms 5−7 ms 5−7 ms
PMP 54400
PTP 54200
Modulation QPSK 16 QAM 64 QAM
Typical Maximum Range 5 mi (8 km) 2.5 mi (4 km) 1.25 mi (2 km)
Typical Maximum
Aggregate Throughput
7 Mbps 14 Mbps
20 Mbps PMP
21 Mbps PTP
Nominal Receive Sensitivity
including FEC
−89 dBm −78 dBm −70 dBm
Latency 5−7 ms 5−7 ms 5−7 ms
PMP 58430
Modulation QPSK 16 QAM 64 QAM
Typical Maximum Range 7 mi (11.2 km) 3 mi (4.8 km) 2 mi (3.2 km)
Typical Maximum
Aggregate Throughput
7.5 Mbps 15 Mbps 22.5 Mbps
Nominal Receive Sensitivity
including FEC
−89 dBm −78 dBm −70 dBm
Latency 5−7 ms 5−7 ms 5−7 ms
3X operation is configured on an OFDM module’s Configuration => General page using the
Dynamic Rate Adapt drop-down list under MAC Control Parameters.
For information such as how to check link efficiencies or the status of 3X operation or how to
disable 3X operation, see the PMP 400-430 and PTP 200-230 User Guide.
Engineering for 2X and 3X Operation
The following priorities should guide your implementation of 2X and 3X operation:
• In the near quarter of the distance range of the AP
o identify the customers who use the most bandwidth on OFDM SMs.
o enable their SMs first for 3X operation.
• In the near half of the distance range of the AP
o identify the customers who use the most bandwidth.