?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Quadrupling+the+data+rate+for+narrowband+internet+of+things+without+modulation+upgrade&rft.creator=Liu%2C+X&rft.creator=Darwazeh%2C+I&rft.description=This+work+proposes+a+novel+signalling+method+for%0D%0ANarrowband+Internet+of+Things+(NB-IoT)+mobile+system+where+a%0D%0Aquadrupled+data+rate+can+be+achieved+by+combining+two+orthogonal+techniques%3B+the+frequency+orthogonal+Fast-Orthogonal+Frequency+Division+Multiplexing+(Fast-OFDM)+scheme+coupled+with%0D%0Athe+time+orthogonal+Hilbert+transform+(HT)+pair.+In+this+paper%2C%0D%0Athe+orthogonality+features+of+one+dimension+in+Fast-OFDM+and+of%0D%0Athe+HT+pair+are+explored.+The+newly+designed+system+structure%0D%0Ais+presented+where+the+HT+pulse+pair+is+generated+by+square%0D%0Aroot+raised+cosine+(SRRC)+filter+with+a+matched+configuration%0D%0Aat+the+receiver.+System+performance+is+investigated+in+terms+of%0D%0Abit+error+rate+(BER)%2C+effective+data+rate+and+spectral+efficiency.%0D%0ASimulation+results+show+that+the+HT-Fast-OFDM+system+provides%0D%0A4+times+the+data+rate+relative+to+an+OFDM+system+employing+the%0D%0Asame+modulation+scheme+and+occupying+the+same+bandwidth.%0D%0AFurthermore%2C+the+proposed+system+has+compelling+advantages%0D%0Aover+16-QAM+OFDM+for+it+achieves+a+better+BER+performance%0D%0Aat+the+same+spectral+efficiency&rft.subject=Fast-OFDM%2C+Hilbert+transform+pair%2C+data+rate%2C%0D%0Aspectral+efficiency%2C+NB-IoT&rft.publisher=IEEE&rft.date=2019-06-27&rft.type=Proceedings+paper&rft.language=eng&rft.source=+++++In%3A++2019+IEEE+89th+Vehicular+Technology+Conference+(VTC2019-Spring).++++IEEE%3A+Kuala+Lumpur%2C+Malaysia.+(2019)+++++&rft.format=text&rft.identifier=https%3A%2F%2Fdiscovery.ucl.ac.uk%2Fid%2Feprint%2F10080752%2F1%2FPID1225628_VTC.pdf&rft.identifier=https%3A%2F%2Fdiscovery.ucl.ac.uk%2Fid%2Feprint%2F10080752%2F&rft.rights=open