Abstract To fulfil the need for higher capacity and multi-user networks, Radio-over-Fiber (RoF) technology is a promising solution for obtaining higher bandwidth and efficiency over an optical fiber-based infrastructure network. RoF, when integrated with WDM, can support higher bandwidth and also provide flexibility in optical wireless networks. In the proposed work, a four-channel WDM-RoF-enabled technology is discussed and simulated. The proposed system operates at a rate of 2.5 Gbps and with a carrier centered at a frequency of 193.1 THz, 193.2 THz, 193.3 THz, and 193.4 THz. The signal after multiplexing is transmitted at 20 Kms with using a single-mode optical fiber and then amplified with a 10 dB EDFA to compensate for the losses, which at the receiver side is recovered using the process of demultiplexing, photodetection, and signal regeneration. The performance is analyzed with the metrics in the form of BER and Q-factor. The results of multi-user data transmission over an optical wireless integrated infrastructure which provides an acceptable signal for communication. The proposed system provides an efficient and flexible solution for 5G networks.
Gyan Prabhakar, K. Krishna, Gazal Sharma et al.· Journal of optical communica...· 0 citations
Abstract For delivering the symmetrical upstream and downstream speeds over the existing fiber, 10 Gigabit symmetrical PON (XGS-PON) is a promising solution. In this paper, a traffic-aware energy-efficient XGS-PON system employing adaptive ONU operating states is proposed and analyzed. The system operates at 10 Gbps in the downstream and apply traffic aware scheme to decrease the utility of the ONU during less traffic conditions. The baseline downstream link is designed to operate at a data rate of 10 Gbps, which is further varied as per the different traffic conditions to be analyzed. The system is investigated for the different network utilization, such as 100 %, 75 %, 50 %, 25 %, and 10 %, along with the complete sleep mode of ONU, where it is almost inactive. The performance of the proposed system architecture is evaluated in terms of BER, Q factor, received optical power, and ONU power consumption. The simulated results indicate that the system is providing acceptable BER and Q factor under full load conditions. Furthermore, this traffic-aware architecture attains ONU energy savings of 75 % under 10 % traffic conditions. The obtained results validate that the proposed system decreases the energy consumption at ONU under low traffic conditions while simultaneously maintaining reliable communication.
Rahul Sharma, Kamlajeet Kaur, Ankit Chakrawarti et al.· Journal of optical communica...· 0 citations
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