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Orthogonal frequency division multiplexing (OFDM) system can assure a greater immunity to multipath fading under a wireless communication environment. But the major challenge is to address the issue of high peak to average power ratio (PAPR) in OFDM systems. To reduce the PAPR in OFDM systems, various techniques are proposed by the researchers in the literature. In this paper, a method based on companding...
Over the last decade or so, the data rate and spectrum efficiency of wireless communication systems has been significantly improved with the advent of multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) technology. In order to operate in the most effective way, OFDM-based communication systems need accurate channel estimation. The channel estimation in OFDM communication...
In 4G broadband wireless communications, a multiple input multiple output (MIMO) system with orthogonal frequency division multiplexing (OFDM) is the most promising and efficient system for high data rate communication. OFDM effectively mitigates inter symbol interference (ISI) caused by the delay spread, due to the multipath propagation effects, inherently present in the wireless channel. Channel...
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