Municipal Wireless
In Municipal Wireless networks Access Points are deployed throughout a coverage area to provide client access and possibly wireless backhaul. Aside from the mobility induced constraints discussed in Connected Vehicle, Municipal Wireless networks suffer from two further issues that are addressed by Cohda's products.
- Interference at Access Points (APs) leading to imbalanced links, and
- Impaired backhaul performance leading to reduced system capacity
Access Point Interference
The coverage in the downlink, where the transmit EIRP is high, is much less challenged than the uplink. The figure below shows the region where the uplink and downlink are imbalanced when a COTS radio is employed as the AP. The red region represents areas where a downlink connection is available but no uplink. By employing a Cohda radio at the AP instead, the uplink budget is significantly improved and balance is substantially restored to the system.
Muni Backhaul
The receive sensitivity improvement offered by Cohda's radio is in the order of 5 to 13 dB in Muni backhaul applications. This results in an increase in the backhaul data rate and a corresponding increase in the number of users supported or an increase in the number of broadband applications supported. This is illustrated below where the data rates supported are shown in an example deployment of 4 APs where interference is present.
Supported backhaul data rates (Mbps) |
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COTS equipped APs
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Cohda equipped APs
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