Performance of a novel power-loading algorithm over uncoded and convolutionally coded OFDM systems

In this paper, a power-loading technique is presented for OFDM systems, which is a modified version of an existing power-loading algorithm that exhibits enhanced performance when compared to the latter under certain conditions. The impact of power loading on the coded OFDM system that uses convolutional codes is also studied. A comparative study is done to show the differences in performance of the proposed power- loading technique and certain existing ones. An analysis of the behavior of coded and uncoded systems towards power-loading is performed. The performance is evaluated in terms of the bit error probability of the system. Simulation results are used to validate the conclusions made.