Power loading for CP-OFDM over frequency-selective fading channels
نویسندگان
چکیده
In this paper we compare cyclic prefix (CP) based single and multicarrier block transmission schemes in frequencyselective 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.
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تاریخ انتشار 2003