On Wed, 4 Mar 2015, Dave Taht wrote:
With 5GHz, signal fades away rather quickly due to walls.
False. It is mostly the low signal strength that is legal on the lower
5ghz bands that is the problem here. Higher bands usually let you have
much more output power. But, that too creates problems. See above for
one piece of a solution.
Could you please elaborate? I have read papers claiming 5GHz and 2.4GHz
attenuates identically through concrete. My personal experience is exactly
the opposite, that with 20cm re-inforced concrete floors or walls, 5GHz
basically doesn't work at all, whereas 2.4GHz works ok. I don't believe
this is only due to lower power output, but I'd gladly be convinced why I
am wrong.
I thought it was quite obvious that the higher the frequency, the lower
the solid object penetration is.
Thankfully, although I am waiting for products to appear and it appears
this standard is mostly targetted at TV, not interactive applications.
I have been told 60Ghz is line-of-sight only, which I have no trouble
believing. My experience with 38GHz radio links has shown me how little it
takes to make things stop working compared to 2.4GHz or 5 GHz.
--
Mikael Abrahamsson email: [email protected]
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