5.7/5.8 GHz 802.11n dual polarity MIMO through office building glass, 1.5 km distance

Joel Jaeggli joelja at bogus.com
Tue Dec 28 23:51:48 CST 2010


On 12/28/10 8:48 PM, Anonymous List User wrote:
> For architectural and building management reasons we cannot mount our
> antennas in a rooftop or outdoor location at either end.  The distance
> between two buildings is 1.5 km, and the fresnel zone is clear.  Antennas
> need to be located indoors at both ends and will be placed on small speaker
> stand tripod pointing at windows.  This has been done successfully before
> with 2.4 GHz 802.11g equipment and a link from an office in the Westin to a
> nearby apartment building, but I am unsure of what effect glass will have on
> 5 GHz.  Has anyone tried this?

glazed windows (which is tin in general) are a problem... when most of
your radiation as being thrown right back at you that is a challange.

> The goal of this link is to achieve a 10 Mbps+ full duple bridge to a
> building which is only serviced by ADSL2+ Telus service in a Western
> Canadian city.  Telus' upstream speed offering do not exceed 1 Mbps.
> 
> Equipment.  These have been used successfully for MCS13/MCS14 50 Mbps+
> bridges at 11 km distance between towers.
> 
> http://ubnt.com/nanobridge
> 
> http://www.ubnt.com/downloads/nb5_datasheet.pdf
> 





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