System Planning
78
Figure 52:
Minimum CN spacing
Near-far radio
Near-far ratio for links from different sectors on the same pole is based on the following factors:
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Scenario:
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One wireless link on DN sector 1 at long range, link 2
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One wireless link on DN sector 2 at short range, link 1
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Narrow angular separation between link1 and link2 (less than 20 degrees)
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Configured for the same channel
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Problem:
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The TG system utilizes the active Transmit Power control.
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The transmit powers for link 1 is automatically set to a low level.
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The transmit powers for link 2 is automatically set to a high level.
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Due to narrow angular separation, the sidelobes of link 2 is interfered with link 1. As a result,
the Signal-to-Noise Ratio (SNR) of link1 could degrade and this might cause the transmit
power of link 1 to be boosted to a much higher level. This problem ends up in a cycle
resulting in both links eventually transmitting at full power by causing network interference.
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Solution:
Summary of Contents for cnWave
Page 1: ...USER GUIDE 60 GHz cnWave System Release 1 2 2 ...
Page 56: ...System Hardware 56 Figure 37 10 GbE PoE C000000L141A ...
Page 136: ...Installation 136 Figure 128 Connecting the power injector to ODU drop cable ...
Page 205: ...Operation 205 SNR graph Figure 219 SNR graph MCS Index graph Figure 220 MCS Index graph ...