Title :
Waterfilling Power Allocation at High SNR Regimes
Author_Institution :
Dept. of Electron. Eng., Hanyang Univ., Seoul, South Korea
fDate :
3/1/2011 12:00:00 AM
Abstract :
In this letter, for general fading distributions, it is rigorously shown that the water-filling power allocation function converges pointwise to the function which allocates fixed power to all non-zero channel gain states, as SNR approaches infinity. The convergence speed of the water-filling power allocation is also investigated.
Keywords :
channel allocation; channel estimation; fading channels; convergence speed; general fading distribution; high SNR regimes; nonzero channel gain; water filling power allocation function; Convergence; Fading; Gain; Resource management; Signal to noise ratio; Transmitters; Wireless communication; AMC (adaptive modulation and coding); channel capacity; power allocation; water-filling;
Journal_Title :
Communications, IEEE Transactions on
DOI :
10.1109/TCOMM.2010.022811.090552
