User's Guide

Chapter 2: Product Description
14
6 2.16 69.12 68.04 70.20
9 4.32 59.40 57.24 61.56
10 4.32 61.56 59.40 63.72
11 4.32 63.72 61.56 65.88
12 4.32 65.88 63.72 68.04
13 4.32 68.04 65.88 70.20
Characteristics of 60 GHz
Here are some of the important 60 GHz characteristics:
•
High Throughput capability
With multi-gigabit channel bandwidth, it is possible to gain multi-gigabit capacity, based on 802.11 ad it is possible to
get 5 Gbps PHY rate and with 802.11ay it is possible to get 10 Gbps PHY rate. cnWave products are capable to providing
15 Gbps with channel bonding enabled.
• Unlicensed and interference free
Typically, V Band is either unlicensed or lightly licensed band and since this band is relatively newly opening there
would be limited interference compared to 2.4 and 5 GHz bands.
• Line of Sight
60 GHz is affected by oxygen absorption, it varies throughout the band. The absorption gets reduced if the frequency
gets increased. For example, the absorption is 15 dB/km in 60 GHz frequency, 5dB/km in 64 GHz and 0.5 dB/km in 68
GHz. If the total channel is divided into 6 channels, then the mid channel that is channels 2 and 3 has more
absorption loss. From channel 4, the absorption level starts to drop. So only Line of Sight links are available & Near
LOS or non LOS does not work with 60 GHz.
• Rain fade
User can expect to see significant rain fade for 60 GHz links, particularly those pushing the longer distances. Attenuation
depends on the rain rate which must be factored in while planning the network. Rain attenuation (water absorption due to
rain) depends on the level of the rain. The following table describes the rain level and absorption loss: