COMPARISON OF THREE DIFFERENT EOU TECHNIQUES FOR FIFTH−GENERATION MM−W WIRELESS NETWORKS
DOI:
https://doi.org/10.25195/ijci.v45i2.47Keywords:
Millimeter−waves, 5G, EOU techniques, ESSR, OHDAbstract
Fifth−generation (5G) and millimeter−waves (MM−W) hold tremendous promise to provide opportunities to
revolutionize education, healthcare, business, and agriculture.
Nevertheless, the generation of MM−W in the electrical−domain is infeasible due to the bandwidth limitation of electronic components
and radio frequency (RF) interference. The capability to generate MM−W in the optical−domain can provide transportation of
MM−W with low loss from switching center to remote base stations. The present paper is focusing on electro−optical
up−conversion (EOU) techniques for optical generation and transmission of 60−GHz MM−W signal. A comparative study is
carried out between three different EOU techniques: frequency−quadrupling, frequency sextupling and
frequency−octotupling. The comparative study aims at showing the strengths and weaknesses of three EOU techniques and evaluating
each technique in terms of electrical spurious suppression ratio (ESSR), as well as in terms of the influence of non−ideal phase
shifting. The performance of the three EOU techniques after transmission over optical fiber is evaluated by eye pattern test. The
results of the simulation confirm that the frequency−quadrupling outperforms frequency− sextupling and frequency− octotupling
techniques.
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