A Novel IDFT/DFT Based Transceiver for Faster
than Nyquist Signaling Optimization
Published online: 13 November 2017
Ó Springer Science+Business Media, LLC 2017
Abstract Faster than Nyquist has gained a lot of interest lately since it can enhance
OFDM spectral efﬁciency, which most of current telecommunication systems are based on.
This makes it the optimum candidate technology to be deployed for the upcoming systems
that are basically based on legacy OFDM systems such as 5G. Towards an era where all
devices are predicted to be online, the ease of implementation has become a must as
expensive and large chips will not suit wearable devices and micro-computers. In this
paper, we offer a system that is not only beneﬁcial for next generation of telecommuni-
cation systems, but also adaptive in sense of self-optimization and also in a way that it can
be backward compatible with conventional OFDM systems.
Keywords Channel quality indicator (CQI) Á Doppler effect Á Faster-than-Nyquist
(FTN) Á Non-orthogonal frequency division multiplexing (NOFDM)
The growth of demand of data over air interfaces has necessitated the implementation
robust and reliable systems of high spectral efﬁciency.
For LTE, OFDM has shown a challenging performance against non-ﬂat fading and ease
of implementation using IFFT/FFT algorithms . This has resulted in regarding a
developed version of OFDM as a basis for next generation of telecommunication systems.
& Mohamed El-Barbary
Electronics and Communication Engineering, Ain Shams Engineering University, Cairo, Egypt
Wireless Pers Commun (2017) 97:5643–5656