Title :
Optimal Fast Algorithm for Power and Bit Allocation in OFDM Systems
Author_Institution :
Dept. of Inf., Electron., & Telecommun., Univ. of Rome La Sapienza, Rome, Italy
fDate :
3/1/2011 12:00:00 AM
Abstract :
In an earlier paper, a simple and fast bit loading algorithm for orthogonal frequency-division-multiplex (OFDM) systems was presented. A drawback of the algorithm is that the solution obtained is suboptimal. This drawback is removed in this paper, where we show that the algorithm can be improved and turned into an optimal algorithm with a negligible impact on the computational complexity.
Keywords :
OFDM modulation; computational complexity; OFDM systems; bit allocation; bit loading algorithm; computational complexity; optimal fast algorithm; orthogonal frequency-division-multiplex systems; power allocation; Bit loading; discrete multi tone (DMT) modulation; frequency division multiplexing (FDM);
Journal_Title :
Vehicular Technology, IEEE Transactions on
DOI :
10.1109/TVT.2011.2106526
