Title :
Power loading for CP-OFDM over frequency-selective fading channels
Author :
Wang, Neng ; Blostein, Steven D.
Author_Institution :
Dept. of Electr. & Comput. Eng., Queen´´s Univ., Canada
Abstract :
We compare cyclic prefix (CP) based single and multicarrier block transmission schemes in frequency-selective fading channels. Analytical comparison shows that at moderate-to-high signal-to-noise ratio (SNR), the uncoded error rate performance of multicarrier transmission is inferior to that of single carrier. We propose new minimum bit error rate (MBER) power loading algorithms for multicarrier transmission. It is also shown that a simpler approximate MBER (AMBER) power loading method has performance close to that of the optimum MBER scheme. Performance of a variety of methods is compared analytically and verified by simulations.
Keywords :
OFDM modulation; error statistics; fading channels; BER; CP-OFDM; SNR; approximate minimum bit error rate; broadband wireless communication signals; cyclic prefix OFDM; frequency-selective channels; frequency-selective fading channels; multicarrier block transmission; power loading algorithm; signal-to-noise ratio; single carrier block transmission; AWGN; Analytical models; Bit error rate; Error analysis; Finite impulse response filter; Frequency-selective fading channels; Intersymbol interference; OFDM; Performance analysis; Time domain analysis;
Conference_Titel :
Global Telecommunications Conference, 2003. GLOBECOM '03. IEEE
Print_ISBN :
0-7803-7974-8
DOI :
10.1109/GLOCOM.2003.1258646
