WDM/SCM optical fiber backbone for 60 GHz wireless systems

Author(s):  
M.A. Al-mumin ◽  
G. Li
2018 ◽  
pp. 319-344
Author(s):  
Koji Takinami ◽  
Naganori Shirakata ◽  
Masashi Kobayashi ◽  
Tomoya Urushihara ◽  
Hiroshi Takahashi ◽  
...  

2019 ◽  
Vol 2019 (02) ◽  
pp. 107-116
Author(s):  
Karrupusamy P.

As the telecommunication services totally relies on the optical fiber for extending communications, it necessary that the optical communication system be capable of handling high speed, multiple channels and long haul signal transmission. recently the emergence of the optical coherent 100 GB/s and the digital signal processing has made possible the perfect signal transmission even for the MIMO (multiple input multiple output system) as they are well reformed to permit multiple wireless signal that holds different carrier frequencies. So the optical fiber system has become prominent among the applications like, large universities, banks and other private networks. However the speed in the transmission of the multiple wireless signals through single cable experiences performance issues in terms of speed, so the proposed method utilizes the 60 GHz, radio over fiber MIMO with effective spectrum allocation and the return zero differential phase shift keying to improve the communication speed and suppress the crosstalk respectively. The proposed system enriches the seamless communication with the QPSK-OFDM MIMO channels achieving 85 % in the data transmission rate, reducing the error correction rate to 5%.


2012 ◽  
Vol 14 (1) ◽  
pp. 64-86 ◽  
Author(s):  
Bien Van Quang ◽  
R. Venkatesha Prasad ◽  
Ignas Niemegeers
Keyword(s):  

Sensors ◽  
2018 ◽  
Vol 18 (11) ◽  
pp. 3728 ◽  
Author(s):  
Dien Nguyen ◽  
Tuan Le ◽  
Sangsoon Lee ◽  
Eun-Seok Ryu

360-degree video streaming for high-quality virtual reality (VR) is challenging for current wireless systems because of the huge bandwidth it requires. However, millimeter wave (mmWave) communications in the 60 GHz band has gained considerable interest from the industry and academia because it promises gigabit wireless connectivity in the huge unlicensed bandwidth (i.e., up to 7 GHz). This massive unlicensed bandwidth offers great potential for addressing the demand for 360-degree video streaming. This paper investigates the problem of 360-degree video streaming for mobile VR using the SHVC, the scalable of High-Efficiency Video Coding (HEVC) standard and PC offloading over 60 GHz networks. We present a conceptual architecture based on advanced tiled-SHVC and mmWave communications. This architecture comprises two main parts. (1) Tile-based SHVC for 360-degree video streaming and optimizing parallel decoding. (2) Personal Computer (PC) offloading mechanism for transmitting uncompressed video (viewport only). The experimental results show that our tiled extractor method reduces the bandwidth required for 360-degree video streaming by more than 47% and the tile partitioning mechanism was improved by up to 25% in terms of the decoding time. The PC offloading mechanism was also successful in offloading 360-degree decoded (or viewport only) video to mobile devices using mmWave communication and the proposed transmission schemes.


Author(s):  
Torgil Kjellberg ◽  
Morteza Abbasi ◽  
Mattias Ferndahl ◽  
Anton de Graauw ◽  
Edwin v. d. Heijden ◽  
...  

2022 ◽  
Vol 2022 ◽  
pp. 1-15
Author(s):  
Usman Rauf Kamboh ◽  
Muhammad Rehman Shahid ◽  
Hamza Aldabbas ◽  
Ammar Rafiq ◽  
Bader Alouffi ◽  
...  

For the last two decades, cybercrimes are growing on a daily basis. To track down cybercrimes and radio network crimes, digital forensic for radio networks provides foundations. The data transfer rate for the next-generation wireless networks would be much greater than today’s network in the coming years. The fifth-generation wireless systems are considering bands beyond 6 GHz. The network design of the next-generation wireless systems depends on propagation characteristics, frequency reuse, and bandwidth variation. This article declares the channel’s propagation characteristics of both line of sight (LoS) and non-LOS (NLoS) to construct and detect the path of rays coming from anomalies. The simulations were carried out to investigate the diffraction loss (DL) and frequency drop (FD). Indoor and outdoor measurements were taken with the omnidirectional circular dipole antenna with a transmitting frequency of 28 GHz and 60 GHz to compare the two bands of the 5th generation. Millimeter-wave communication comes with a higher constraint for implementing and deploying higher losses, low diffractions, and low signal penetrations for the mentioned two bands. For outdoor, a MATLAB built-in 3D ray tracing algorithm is used while for an indoor office environment, an in-house algorithmic simulator built using MATLAB is used to analyze the channel characteristics.


Author(s):  
Alex Tomkins ◽  
Alan Poon ◽  
Eric Juntunen ◽  
Ahmed El-Gabaly ◽  
Grigori Temkine ◽  
...  
Keyword(s):  

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