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As mentioned before, WASOWC2020 will be held fully online via Zoom Cloud Meeting. Please follow these instructions to install and use Zoom. For more details please refer to General Guide to Virtual Symposium page. To join meetings use corresponding links for each event in Brief Program.

Zoom Client Download:

• Windows: Installer, Mirror (Without using VPN)
• Android: Google Play Store, Cafebazaar
• iOS: App Store
• Browser Plugins: Firefox, Google Chrome

Room 1 Link (Main Room)
https://zoom.us/j/99058494926?pwd=QXFndnFqOEtqQ3NqK1dWdnVLNzdrdz09
Meeting ID: 990 5849 4926, Passcode: 640739

Room 2 Link (Parallel Sessions)
https://zoom.us/j/95577335417?pwd=WDVaKzlIK0JIeTZOTXE0QktHMEhaZz09

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WASOWC 2020 will be held online

After careful consideration and a comprehensive review of information related to the coronavirus (COVID-19) outbreak, the committee of West Asian Symposium on Optical & Millimeter-wave Wireless Communication (WASOWC 2020) has decided to reschedule the event. The new date is November 24-25, 2020 while the original one was April 21-22, 2020.

Moreover, to make the best out of this delay, the website is open for submission of new articles. The new related dates are announced on the website.

We apologize for any inconvenience this change caused and are looking forward to hosting you in the beautiful city of Tehran.

Welcome to WASOWC

The 3rd West Asian Symposium on Optical and Millimeter-wave Wireless Communications (WASOWC2020) is hosted at the Tarbiat Modares University (TMU), Tehran, Iran. It follows the successful previous events held in Isfahan University of Technology (2018) and Shahid Beheshti University (2019). WASOWC2020 aims to bring together researchers from academia and industry to share their latest findings in the field of optical & millimetre-wave wireless communications as part of the 5th Generation and beyond wireless netwroks. The 3rd Symposium will also include workshops, invited and keynote speakers. High quality and original technical papers are welcome to be presented at WASOWC2020.

Prof. Beatriz Ortega Tamarit
Instituto de Telecomunicaciones y Aplicaciones Multimedia (ITEAM),
Universitat Politècnica de València, Spain

MICROWAVE PHOTONICS SIGNAL GENERATION FOR 5G NETWORKS

Enabling technologies for 5G networks include the use of millimeter waves (MMW) between 30-100 GHz to overcome spectral congestion and increase bandwidth; small cells to allow frequency reuse with a large number of base stations and also massive multiple-input multiple-output (MIMO) full-duplex transmission and beamforming techniques.

A major challenge in the 5G mobile radio access network is the efficient integration of a large number of small cells into the existing network. A fully centralized Cloud Radio Access Network (C-RAN) approach shifts the signal processing from the remote radio heads (RRHs) to a base band unit (BBU) in a central unit and therefore leads RRHs as based on opto-electrical converters, electrical amplifiers and antennas. In a C-RAN architecture for 5G networks deployment, the data will be carried by a MMW signal and delivered from a central station (CS) to an optical distribution network (ODN). Transportation of radio signals over large distances makes advantage of the low optical fibre losses but, moreover, the inclusion of free-space optics (FSO) links is a promising solution to meet future capacity and coverage challenges while reducing the infrastructure costs, especially in rural or remote areas, as well as crowded urban segments.

One of the most challenging stages in these systems is the generation of the MMW signals due to the limited frequency response of electronic components. During the last two decades, a large variety of microwave photonic (MWP) solutions for MMW signal generation have been proposed in the literature including phase control, sideband injection locking, frequency multiplication or nonlinear mechanisms, amongst others. However, the role of MWP signal generation in future 5G networks deployment will be properly defined according to the requirements of future mobile networks and also considering other practical issues, such as cost and complexity of these systems.

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Abstract:
After a surge of research on key technologies of VLC systems, considerable bitrate have been achieved through various schemes, such as DMT, OFDM, MIMO, DPD... To promote the VLC technologies, attention should be paid also to its practical application scenarios, such as broadband access, optical networking and indoor positioning.
This talk will introduce the recent work in the State Key Laboratory of Information Photonics and Optical Communications. We designed and implemented a VLC networking system, with one VLC access point (VLC-AP) and several VLC user equipment models (VLC-UEs), operating through the self-developed protocol which maintains a simple mechanism of time division multiple address (TDMA). The user terminals (such as PADs and laptops) are connected to VLC-UEs via Ethernet interface and they can access the Internet through the VLC-AP and also they can perform peer-to-peer communication. Various files (such as txt, mp3, mp4 and so on), are able to be transmitted through real-time uplinks and downlinks in this network, including real-time voice and real-time video. The interrupted services are restored automatically. However, dynamic TDMA mechanism is to be implemented in the future and the flexibility at VLC-UEs is to be improved to support seamless handover from one VLC-AP to another.