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- 摘要
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- 实验方案
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Metamaterials - Devices and Applications || Development of Metamaterial EBG Absorbers for Application of Wireless Inter/Intrachip Communication Systems
摘要： First, the chapter presents a novel design of electromagnetic bandgap (EBG) absorber with the characteristics of broad bandwidth, low profile, and polarization‐independence to a normal incident electromagnetic wave. The absorber is composed of three consecutive octagon or decagon loops, and highly‐resistive frequency selective surface (FSS) layers. Second, based on the feature of the designed absorber unit, a broadband, meta‐material absorber‐bounded, wireless inter/intrachip (WIIC) communication channel is constructed at the center frequency of 60 GHz. Third, in order to validate the developed methodology used in WIIC analysis, a wired channel on a conventional PCB has been measured, simulated, and analyzed. Fourth, with the extracted S‐parameters of the WIIC system and wired PCB channel, the system impulse responses and transfer functions of the investigated channels have been further extracted, which are used for validation and BER analysis of the WIIC system. Finally, it has been shown that based on the derived BER results, the performance of the designed WIIC channel is close to that of an additive Gaussian white noise (AWGN) channel when the WIIC transceivers are built in with the functionalities of forward error control (FEC), channel estimation, and equalization.
关键词： metamaterial EBG,channel design,absorber,wireless inter/intra chip communication,bit error rate
更新于2025-09-09 09:28:46
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[Lecture Notes in Electrical Engineering] Recent Trends in Communication, Computing, and Electronics Volume 524 (Select Proceedings of IC3E 2018) || Performance Optimization of Carving Signal RZ-DQPSK Modulation Scheme
摘要： This paper depicts a modi?ed return-to-zero differential quadrature phase shift keying (RZ-DQPSK) modulation scheme. A simulative analysis has been performed for an optimization of the proposed scheme. The analysis has also been extended for two different types of commercial ?bers; standard single-mode ?ber (SSMF) and true wave-reduced slope (TW-RS) ?ber to report the similar qualitative performance characteristics. For the sake of better understanding of the proposed modi?ed carving signal RZ-DQPSK scheme, optical spectrum and eye pattern plots are also investigated.
关键词： Bit error rate (BER),Quality factor,True wave-reduced slope ?ber (TW-RS),Eye pattern,Return-to-zero differential quadrature phase shift keying (RZ-DQPSK)
更新于2025-09-09 09:28:46
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[ACM Press the 1st International Workshop - New Delhi, India (2018.10.29-2018.10.29)] Proceedings of the 1st International Workshop on Communication and Computing in Connected Vehicles and Platooning - C3VP '18 - On Feasibility of VLC Based Car-to-Car Communication Under Solar Irradiance and Fog Conditions
摘要： This paper investigates the impact of solar irradiance and fog condition on visible light communication (VLC) based car-to car (C2C) communication for two capital cities, New Delhi and London. The bit error rate (BER) variation over a day has been compared for both the cities for the month of March, June and December. It has been shown that for a given BER threshold performance, the impact of solar irradiance is more pronounced in month of June especially at New Delhi when solar irradiance reaches its peak. It has also been shown that in month of December, fog is one of the most significant climatic factors that greatly influences the VLC based C2C communication in terms of atmospheric attenuation. This paper also establishes the relationship for the minimum safety distance required between cars based on two-second rule, car speed and angle between cars. The minimum safety distance which would be required to avoid any rear-end collision especially during light or dense fog in the month of December has also been compared for New Delhi and London.
关键词： safety distance,fog conditions,solar irradiance,car-to-car communication,visible light communication,bit error rate
更新于2025-09-09 09:28:46
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Comparison of Modulation Techniques for Underwater Optical Wireless Communication Employing APD Receivers
摘要： In this study, we theoretically analyze the performance of an underwater optical wireless communications system using different modulation techniques and an avalanche photodiode APD receiver over underwater environment channels. Based on the LOS geometrical model and combined with signal to noise ratio model for Si and Ge APD and BER; then the impact of the distance of transmission and power of the transmitter and Jerlov water type are analyzed. The characteristics of bit error rate BER for different optical modulation techniques are studied. Simulation results indicate that the performance of H-QAM is more suited for an underwater optical wireless communication. On the other hand, the suitability of avalanche photodiodes under these modulation techniques is discussed, because the photodiode Si APD has more advantages compared with Ge APD when used in an underwater optical communication.
关键词： Avalanche photodiode APD,modulation,underwater optical communication,bit error rate BER
更新于2025-09-09 09:28:46
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[ACM Press the Thirteenth ACM International Conference - Shenzhen, China (2018.12.03-2018.12.05)] Proceedings of the Thirteenth ACM International Conference on Underwater Networks & Systems - WUWNet '18 - Relay-assisted optical wireless communications in turbid water
摘要： Underwater optical wireless communication (UOWC) systems are subject to severe performance degradation due to undissolved particles that make the water turbid. The point source diffusion of a substance in water creates a Gaussian-distributed attenuation spread for a given time instance, which makes communication challenging. To overcome this issue, we propose a dual-hop UOWC system in which the transmitter-receiver link is assisted by several amplify-and-forward relay nodes. To characterize the performance gains of this relay system, we study the bit error rate assuming on-off keying modulation. We investigate the impact of key system and particle distribution parameters such as the transmit power, the number of relays, and the spatial position of the attenuation spread on the performance.
关键词： relays,Underwater optical wireless communications,amplify-and-forward,submerged particle distributions,bit error rate
更新于2025-09-04 15:30:14
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[IEEE 2018 IEEE 7th Global Conference on Consumer Electronics (GCCE) - Nara, Japan (2018.10.9-2018.10.12)] 2018 IEEE 7th Global Conference on Consumer Electronics (GCCE) - Exact Bit Error Rate Analysis for Optical-Wireless Framed-DOOK System
摘要： In this paper, the differential on-off keying (DOOK), which has the resistance of background noise and high transmission efficiency characteristic, is focused. Especially, framed-DOOK system with 2-bit synchronization signal, which proposed by authors for solving synchronization slip problem on DOOK system, is considered. In this paper, bit error probability theoretically in consideration of synchronization performance of the proposed system is derived and evaluated on optical-wireless channel. As the result, it is shown that the proposed system is effective on the optical-wireless OOK.
关键词： optical-wireless,DOOK,synchronization,framed-DOOK,bit error rate
更新于2025-09-04 15:30:14
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[IEEE 2018 IEEE 7th Global Conference on Consumer Electronics (GCCE) - Nara, Japan (2018.10.9-2018.10.12)] 2018 IEEE 7th Global Conference on Consumer Electronics (GCCE) - BER Performance Impaired by Transmission Time Offset between Users in Optical Wireless CSK/ACDMA System Using DMPOMs
摘要： An optical-wireless code-shift-keying (CSK) system utilizing dual modified pseudo orthogonal M-sequence sets (DMPOMs) has been proposed by authors. DMPOM is generated by merging modified pseudo orthogonal M-sequence sets (outer-code), bi-orthogonal code and orthogonal M-sequences (inner-code). In this paper, bit error rate (BER) of the optical-wireless CSK/asynchronous CDMA is investigated in 2-user communication. Consequently, for the realization of the CSK/CDMA, it is effective to utilize the inner codes generated by different feedback taps.
关键词： optical-wireless,bit error rate (BER),code-shift-keying (CSK),dual modified pseudo orthogonal M-sequence sets (DMPOMs),asynchronous CDMA (ACDMA)
更新于2025-09-04 15:30:14