That makes sense. Thank you.
At 11:17 AM 6/23/2020, you wrote:
Yes - an open area will give you a stronger signal.
As long as a radio signal is above the detection threshold (the
signal is strong enough for the radio to detect) and the SNR is high
enough to support the modulation it will perform to specification
(assuming the manufacturer provided accurate specifications).
Keep in mind that wooded areas generally attenuate both noise and
signal equally. At the customer side receive sensitivity can
quickly become important due to the attenuated signals you are
trying to detect. At the access point (AP) side (which is
presumably not in the trees) SNR is usually a bigger concern. The
AP is going to have to be sensitive enough to detect the (tree
attenuated) signal coming from the client while still hearing all of
the noise that exists in the open areas.
Mark
> On Jun 23, 2020, at 11:09 AM, D. Bernardi <dberna...@zitomedia.net> wrote:
>
>
>
> Clearly RF isn't my specialty... Instead of SNR I guess I really
meant noise. If the noise floor is equal wouldn't there be less
attenuation of the signal in an open environment (resulting in a better SNR)?
>
>
>
> At 10:41 AM 6/23/2020, you wrote:
>
>> > On Jun 23, 2020, at 10:32 AM, D. Bernardi
<dberna...@zitomedia.net> wrote:
>> >
>> >
>> >
>> > I was thinking more in terms of foliage or other object
density, or mountains/hills, to help estimate range. Wouldn't TVWS
still have better performance in an open area compared to dense
forest given equal SNR?
>> >
>>
>> If SNR is identical then you will get identical performance,
assuming the same channel size and modulation. TVWS channel size
is considerably smaller than the higher frequency alternatives and
has lower modulation levels (at least that I have seen).
>>
>> Mark
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