Hot Topics in Information Theory

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hrhgroup

Joined: 27 Jun 2005
Posts: 274
Helped: 14

23 Feb 2008 18:47 Hot Topics in Information Theory

Hi
What are the hot topics in Information Theory,nowadays?
Thanks

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urwelcome

Joined: 12 Apr 2007
Posts: 86
Helped: 6

25 Feb 2008 23:26 Re: Hot Topics in Information Theory

Channel capacity of a relay channel is unknown in general.

Relay channel is one where sender sends its information to its destination with the help of some intermediate helper.

changfa

Joined: 14 Dec 2005
Posts: 276
Helped: 82

05 Mar 2008 0:41 Re: Hot Topics in Information Theory

urwelcome wrote:

Channel capacity of a relay channel is unknown in general.

Relay channel is one where sender sends its information to its destination with the help of some intermediate helper.

Well, this is hot in the sense that everyone uses this sentense "... is unkonwn."

If you are not a genius, you'd better keep an eye on the development on this topic, but never work on it. The reason is simple, over last thirty years, many able resesearcher have worked on this and yet they still did not get it. Hard, hard hard.....

Recently, there are some new development in the field, for example, the degree-of-freedom analysis (which is approximation of the exact problem by focusing on high SNR regime). Google, for example, S.Jafar (at UCI) for his papers. Another advance is due to Tse (at UC Berkeley). He proposed a deterministic model, which turns out to shed insight on the real problem.