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The rapid growth and development of wireless data transmission brings new trends, challenges and constraints in the telecommunications field. Novel multicarrier techniques are proposed to meet these requirements. The orthogonal frequency division multiplexing (OFDM) is an attractive technique that achieves high data rate and high spectral efficiency and, at the same time, suppresses multipath fading...
Multicarrier modulations have been recently proposed for high rate communications in underwater acoustic (UWA) channels. The UWA channels are wideband in nature, and far more challenging for multicarrier transmission than narrowband channels. In this paper, we investigate effects of Doppler scaling that wideband time varying multipath channels induce on orthogonal frequency-division multiplexing (OFDM)...
The fast growth of the wireless data transmission requires reliable and high data-rate modulation techniques that can cope with impairments of the time-varying multipath channels. The current demands are aimed at using the Internet anytime and anywhere. The main constraint to achieving these demands is the mobility. Suppression of Doppler spreading effects caused by high velocity of moving objects...
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