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Multicarrier modulation has been employed in numerous modern wireless communications standards due to its ability in providing high data rates while simultaneously counteracting the effects of intersymbol interference due to multipath fading channels. In the recent years, multicarrier modulation is being investigated as a possible candidate data transmission scheme for achieving spectrally agile wireless...
Bit-Power Loading (BPL) algorithms are proposed based on Effective SINR Mapping (ESM) techniques. The ESM techniques used are the Exponential ESM (EESM) as well as the Mean Mutual Information per Bit (MMIB). The algorithms are based on proper usage and modifications of algorithms already proposed in the literature, applied to ESM compatible link-level performance models. The performance gain when...
A new simple, yet effective two-step bit-and-power-loading algorithm is described for multicarrier transmission. The coarse bit and power allocation to the subcarriers is done at the first step by the means of the direct mapping of the transmit power or bits with regard to the channel gains. Three ways of the final power and bit assignment are proposed at the second step. The algorithm reaches the...
In this paper new bit and power loading (BPL) algorithm is presented, which is suitable for application in non-orthogonal multicarrier (NOMC) systems. Its main idea bases on the J. Campello's approach, originally designed for orthogonal multicarrier systems, like orthogonal frequency division multiplexing (OFDM). In the proposed solution, the NOMC-specific features are considered, i.e. two-dimensional...
In this paper, the peak-to-average power ratio (PAPR) metric and other metrics reflecting nonlinear distortions caused by a nonlinear element are presented. To avoid the drawbacks and ambiguity of some well-known frequently quoted metrics an attempt to reveal the influence of nonlinear elements on the transmitted signal is made, what leads to more reliable assessment of the phenomena of the occurrence...
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