Title :
Minimum BER power loading for OFDM in fading channel
Author :
Goldfeld, Lev ; Lyandres, Vladimir ; Wulich, Dov
Author_Institution :
Dept. of Electr. & Comput. Eng., Ben-Gurion Univ. of the Negev, Beer-Sheva, Israel
fDate :
11/1/2002 12:00:00 AM
Abstract :
A novel approach to power loading for orthogonal frequency-division multiplexing (OFDM) systems is proposed. The corresponding algorithm minimizes the aggregate bit-error rate, but appears to be rather complicated. Consequently, a much simpler, quasi-optimal loading algorithm is developed. The performance of various power loading strategies known in the literature are compared with the proposed quasi-optimal algorithm in the Rayleigh frequency-selective fading channel.
Keywords :
OFDM modulation; Rayleigh channels; error statistics; optimisation; OFDM systems; Rayleigh frequency-selective fading channel; bit error rate; data transmission; fading channel; minimum BER power loading; orthogonal frequency-division multiplexing; quasi-optimal loading algorithm; Aggregates; Bit error rate; Bit rate; Discrete Fourier transforms; Feedback; Frequency division multiplexing; Frequency-selective fading channels; OFDM modulation; Power control; Rayleigh channels;
Journal_Title :
Communications, IEEE Transactions on
DOI :
10.1109/TCOMM.2002.805271
