TY  - JOUR
T1  - Evaluation of OFU Techniques for Optical Generation of mm-W Signals in
Future Broadband Cellular Communication Networks
AU - Al-Shareefi, Nael A. AU - Alkhazraj, Mohanad S. AU - Al-Abbasi, Sarah Yahya Ali AU - Abbas, Sura Adil 
JO  - Journal of Engineering and Applied Sciences
VL  - 14
IS  - 10
SP  - 3463
EP  - 3471
PY  - 2019
DA  - 2001/08/19
SN  - 1816-949x
DO  - jeasci.2019.3463.3471
UR  - https://makhillpublications.co/view-article.php?doi=jeasci.2019.3463.3471
KW  - OFU techniques
KW  -optical mm-W signal generation
KW  -5G
KW  -frequency quadrupling
KW  -MZM
KW  -wireless
signals
AB  - Cellular networks that use the millimeter-Wave (mm-W) spectrum holds a great promise to revolutionize wireless industry. Nevertheless, the generation and transportation of mm-W signals in the
electrical-domain are unfeasible owing to the high air link loss and electromagnetic interference. Generating mm-W signals in the optical-domain, i.e., over an optical fiber will allow sending wireless signals for a long distance. This study presents an evaluation of the Optical Frequency Upconversion (OFU) techniques based on advanced Mach-Zehnder Modulator (MZM) for optical generation and transportation of mm-W
wireless signals. Four types of OFU techniques will be compared: frequency-doubling, frequency-quadrupling, frequency-sixtupling and frequency-octupling. We begin by reviewing selected OFU techniques that enable to double, quadruple, sixtuple or octuple an Radio Frequency (RF) and highlighting drawbacks and benefits. Then, a comparison in terms of modulation index, bias drifting and modulation efficiency is presented to show the trade-off between OFU techniques complexity and cost. Comparison of OFU techniques and results from simulation analysis reveal that the frequency quadrupling technique is a robust and more desirable choice for optical generation and transportation of mm-W wireless signals.
ER  -