Abstract
Orthogonal Frequency Division Multiplexing (OFDM) signaling is highly applicable in wireless communications, like 4G cellular networks, as it has better performance in a fading environment. However, OFDM signal has large Peak-to-Average Power Ratio (PAPR) which leads to signal distortion in the electronic components of the OFDM system transmitter. As a result, PAPR reduction techniques are used in OFDM systems. Selected Mapping (SLM) scheme is one method of reducing PAPR of OFDM signals. In this paper, we have demonstrated the PAPR reduction capability of SLM through simulation on MATLAB. In addition, we have shown the computational complexity incurred in using SLM to reduce PAPR. It is shown that the PAPR reduction capability of OFDM increases with increase in the number of candidate OFDM symbols. However, this is achieved at the cost of increased computational complexity, where the complexity also linearly with the number of candidate OFDM symbols.
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Abera, W.G., Marye, Y.W. (2019). Peak-to-Average Power Ratio Reduction of OFDM Signals Using Selected Mapping. In: Mekuria, F., Nigussie, E., Tegegne, T. (eds) Information and Communication Technology for Development for Africa. ICT4DA 2019. Communications in Computer and Information Science, vol 1026. Springer, Cham. https://doi.org/10.1007/978-3-030-26630-1_17
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DOI: https://doi.org/10.1007/978-3-030-26630-1_17
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