cell phone carriers - CDMA? GSM?

The "buzz" is that Verizon has better coverage in large cities than other carriers.  Is this due to more towers?  Lower frequency?  Or is the contention of my question false?  Maybe Verizon isn't the best.
Have there been any real tests done on the various cell standards in use by AT&T, T-Mobile, Verizon, etc?
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

See http://www.rootmetrics.com/ 
It seems like an independent company, and indeed in their most recent tests, Verizon does end up on top.
How or why, of course, only the most top tier level engineers can tell you that.
RayData AnalystCommented:
The standards (GSM, CDMA, TDMA, Etc) don't really affect the signal propagation and signal propagation is what translates into coverage (in basic terms).  The frequency does impact the signal propagation, but most carriers are using relatively the same frequency spectrum so this wouldn't be much of an issue either.

In general, the bottom line is that signal quality is best achieved through effective use of frequency management (frequency re-use and some other fun engineering) and tower/antenna placement.  More towers/antennas usually equals better signal/coverage (though not always).

In my opinion, any carrier with poor signal quality in a large metro area has a severe problem with their engineering crew (not counting in building issues and below ground transit system issues).
At the end of the day... you should get what you pay for.

With US competition so strict and class law suits as common as rain, also many major company CEO's resigning for corruption scandals...

You should get what you pay for.
GSM has evolved faster than CDMA
GSM networks up to as fast as 42Mbps
CDMA networks, are stuck at 3.6Mbps. While faster CDMA technologies exist.
U.S. carriers chose not to install them and have instead turned to 4G LTE to be more compatible with global standards

Further reading:

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Cell Phones

From novice to tech pro — start learning today.