Quote:
Originally Posted by MadGnome
The big problem with cell signals is blockage. You don't need the antennas on the highest point in the city for range. You need them there to get over the other buildings. Antennas down low wouldn't reliably reach very far.
The newer 4g LTE systems will also have much larger cells than the old stuff. One site will be able to cover up to 2,000 square miles.
A lot of those high antennas will be for point to point links too. You'll have line of site to the tallest buildings in other cities up to 100 miles away.
Those short sites are usually for covering dead areas the main sites can't reach because of terrain or skylines. People picture cell coverage areas as neat little cells, but it's really much more chaotic. You're just as likely to be talking to a site 5 miles away as one 1 mile away in a tall city because of the unpredictable signal propagation.
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Few points:
1) A cell site isn't the same thing as a point-to-point broadcast. I'm not sure what your point is in bringing that up.
2) LTE or not, you're not going to have a 2,000 square mile cell site in Manhattan. Not nearly enough bandwidth for that kind of coverage given that people are paying for 4G equipment to get 4G speeds. Given the fact that this will be one of the most tourist packed parts of the city, I doubt they even want to blanket the entire WTC with a single cell. They'll, in fact, try to use the blocking effect of nearby buildings to compartmentalize the area to allow for maximum throughput.
3) LTE isn't the reason why the new cell sites are going to be larger. It's because they're going to be running LTE on 700MHz spectrum, which has better penetration and propagation characteristics than PCS, AWS and even a little better than 850MHz.
Given 1-3, I stand by my statement that no one is going to want to use the top of this building as cell site. It's just simply too tall. However, I will fully concede that it is incredibly attractive as a point-to-point hub, especially given that a decent amount of fiber goes into the Verizon building just 40 feet away on the other side of Vesey. I can imagine the array of dishes pointing out to Connecticut feeding hedge funds market data. As a cell site, directly connecting to consumer handsets, the base is the more attractive location.