[opendtv] Re: Fw: Re: Post on alt.tv.tech.hdtv of interest today
- From: "John Shutt" <shuttj@xxxxxxxxx>
- To: <opendtv@xxxxxxxxxxxxx>
- Date: Tue, 12 Apr 2005 12:25:32 -0400
----- Original Message -----
From: "Manfredi, Albert E" <albert.e.manfredi@xxxxxxxxxx>
> By the way, just as a point of comparison, I read an
> article in EE Times not long ago that said that to cover
> the area o[f] NYC completely, with Wi-Fi signals, would take
> "tens of thousands" of access points. And similarly,
> Verizon uses "about 1000" cell towers to cover NYC.
>
> So this is the tradeoff to consider.
Bert,
That is about the worst analogy you can come up with. NYC is covered by
that many cells for frequency reuse and two-way capacity, not because that's
how many it takes to cover the city with a receive only SFN. You also have
to consider the furthest that a handset or Wi-Fi laptop can transmit when
choosing the maximum cell size.
I believe Craig has mentioned 6 or 8 medium power transmitters ringing
Manhattan would do the trick, with a properly designed DTV SFN.
John
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