Joint resource blocks switching off and bandwidth expansion for energy saving in LTE networks

Kanwal, Kapil; Safdar, Ghazanfar Ali; Haxha, Shyqyri

doi:10.1109/iconac.2015.7313950

Cited by 1 publication

(1 citation statement)

References 11 publications

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“…Microwave photonics brings together the world of Radio Frequency (RF) engineering and optoelectronics [1]- [3]. The limitation of microwave signal processing such as lack of configurability, limited bandwidth, high energy consumption, prone to electromagnetic noise and interferences can be circumvented through microwave photonics, which refers to the processing of RF signals in the optical domain [4], [5]. Main advantages that fiber communication systems offer are; low electromagnetic interference, extremely low losses, better security and huge bandwidth capacity [5], [6].…”

Section: Introductionmentioning

confidence: 99%

Photonic Mixer Incorporating All-Optical Microwave Frequency Generator Based on Stimulated Brillouin Scattering Using Single Laser Source

2020

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In this paper, we report the theoretical and experimental implementation of a photonic mixer for Radio-Over-Fiber (RoF) transmission systems, which incorporates an all-optical 10.87 GHz microwave frequency signal generator based on beating laser frequency with its first order Stimulated Brillouin Scattering (SBS) frequency shift. A 13GHz Radio Frequency (RF) is down-converted to 2.13 GHz Intermediate Frequency (IF) signal. The proposed system configuration represents a cost-effective photonic mixer that can be deployed for up and down conversion around 11 GHz in RoF transmission systems. The optically generated microwave signal of 10.87 GHz has a phase noise of −109 dBc/Hz at 15-MHz offset. The proposed photonic mixer exhibits a Spurious-Free Dynamic Range (SFDR) of 93dB.Hz 2/3 . This RoF transmission system configuration deploys dual parallel Gallium Arsenide (GaAs) Mach Zehnder Modulator as a photonic mixer, and a single laser source as a Brillouin pump and as an optical carrier at the same time.To the best of our knowledge, this type of photonic mixers has not been reported in the literature.INDEX TERMS Radio-over-fiber (RoF), stimulated Brillouin scattering (SBS), dual parallel Mach Zehnder modulator (DPMZM), Brillouin selective sideband amplification (BSSA), carrier suppressed single side band (CS-SSB).

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