Massive multiple input multiple output (MIMO) technology is one of the promising
technologies for fifth generation (5G) cellular communications. In this technology, each cell …

Multicarrier waveforms have been commonly recognized as strong candidates for cognitive
radio. In this paper, we study the dynamics of spectrum sensing and spectrum allocation …

The performance of OFDM system is highly affected by Amplifier nonlinearities. Nonlinearity
in power amplifier response leads to nonlinear amplification of OFDM signal. In this paper …

Signal clipping is a well-established method employed in orthogonal frequency division
multiplexing (OFDM) systems to mitigate peak-to-average power ratio. The utilization of this …

In this paper, we propose a nonlinear companding technique called “trapezoidal power
companding” to reduce the high peak-to-average power ratio (PAPR) in a complex OFDM or …

The swift growth of cellular mobile networks in recent years has made voice channels almost
accessible everywhere. Besides, data hiding has recently attracted significant attention due …

OFDM is a multicarrier modulation that is applicative to meet higher data rate demand for
digital transmission on wireless and wired environment. This system has a major drawback …

Signal clipping is a classic technique for reducing peak-to-average power ratio (PAPR) in
orthogonal frequency division multiplexing (OFDM) systems. It has been widely applied in …

The power amplifier's performance in a selective level mapping (SLM) STBC-OFDM is
drastically degraded due to the presence of nonlinearities. Further the back off to be applied …

Abstract Multiple-Input Multiple-Output systems are getting pushed as a solution to better
utilize the frequency spectrum and to achieve higher throughput and energy efficiency. By …