Abstract
We study the asymptotic capacity of multi-carrier transmission through a frequency-selective fading channel with limited feedback. The rate at which the capacity increases is characterized as a function of the number of sub-channels N for the uniform power distribution over an optimized subset of channels, and optimal water filling. For Rayleigh fading, we also consider a finite-precision rate control scheme and show that the O(log N) increase in data rate can be achieved with a feedback rate, which grows as O(log3 N). If the number of active subchannels is bounded, then the capacity grows only as O(log log N).
Original language | English (US) |
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Number of pages | 1 |
Journal | IEEE International Symposium on Information Theory - Proceedings |
DOIs | |
State | Published - Jan 1 2003 |
Event | Proceedings 2003 IEEE International Symposium on Information Theory (ISIT) - Yokohama, Japan Duration: Jun 29 2003 → Jul 4 2003 |
ASJC Scopus subject areas
- Theoretical Computer Science
- Information Systems
- Modeling and Simulation
- Applied Mathematics