For anyone looking for anything serious, please walk away.
In David Tse's famous book, it often says the best communication system exploits the dimension of freedom the most. Inspired by this, I came across a seemingly interesting idea, which concludes there is much synergy between the evolution of wireless technology and the evolution of human society.
GSM is kinda like Socialism. Less freedom, less efficient, but highly practical. Each user get a constant quota (a timeslot, 200kHz), as if people get quota on food and other living essentials in China 30 years ago.
CDMA (if without power control) is like Capitalism. Resources are shared but contended. Whoever has the highest "power" will get better service and may block others. With proper power control (Government intervention or Law), it can be more efficient than GSM. But essentially, each user is still an interference to the others, such as in capitalism people/companies are born to compete each other within a set of rules(law).
OFDMA, you may have already known the answer, is no doubt Communism. People are no longer interfering each other (orthogonal). It is also much more efficient than GSM. Resources (RBs) are assigned to the person who can make best use of them (frequency selective scheduling). And, there are plenty bandwidth (20MHz and more :-) )
Have a nice weekend (if it is yet finished for you) and a lovely start of the coming week.
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