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2022 13th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP)最新文献

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Performance of MMSE-LE in 2 Gbaud/s Single Carrier Visible Light Communication using PAM-2 基于PAM-2的2 Gbaud/s单载波可见光通信中MMSE-LE的性能研究
2022 13th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP) Pub Date : 2022-07-20 DOI: 10.1109/CSNDSP54353.2022.9907894
F. Sampaio, Tadeu Ferreira, L. Neto, A. P. López-Barbero, M. Medeiros, Vinicius N. H. Silva
{"title":"Performance of MMSE-LE in 2 Gbaud/s Single Carrier Visible Light Communication using PAM-2","authors":"F. Sampaio, Tadeu Ferreira, L. Neto, A. P. López-Barbero, M. Medeiros, Vinicius N. H. Silva","doi":"10.1109/CSNDSP54353.2022.9907894","DOIUrl":"https://doi.org/10.1109/CSNDSP54353.2022.9907894","url":null,"abstract":"A Visible Light Communication system (VLC) based on Pulse Amplitude Modulation (PAM-2) with equalisation of low-complexity is presented. The VLC system consists of a transmission chain with an off-the-shelf 520 nm Laser Diode (LD), whose distance from the photodiode at the receiver is 1. 8m. A Minimum Mean Square Linear Equalisation (MMSE-LE) with 16 taps enables communication to be performed at a baud rate of 2 Gbaud/s with a measured Bit Error Rate (BER) above the VLC Forward Error Correction (FEC) threshold. Digital Signal Processing (DSP) was performed in offline mode with MATLAB algorithm. Through the study carried out, it is possible to verify how much linear equalisation can compensate for the distortions of the transmission channel through the measured eye diagrams as well as the number of MMSE-LE taps to obtain optimised MMSE-LE performances and increase the capacity of the VLC channel with PAM-2.","PeriodicalId":288069,"journal":{"name":"2022 13th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128931324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Controller for all-optical low power/cost coherent receiver used in short-reach systems 短距离系统中全光低功耗/成本相干接收机的控制器
2022 13th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP) Pub Date : 2022-07-20 DOI: 10.1109/CSNDSP54353.2022.9907948
K. Moschopoulos, M. Nazarathy, Ioannis Tomkos
{"title":"Controller for all-optical low power/cost coherent receiver used in short-reach systems","authors":"K. Moschopoulos, M. Nazarathy, Ioannis Tomkos","doi":"10.1109/CSNDSP54353.2022.9907948","DOIUrl":"https://doi.org/10.1109/CSNDSP54353.2022.9907948","url":null,"abstract":"The ICT industry faces huge challenges in the following years in terms of the bit-rate scalability and energy-efficiency of current transceiver solutions for the next-gen intra-datacenter, 5G fronthaul and access networks, rapidly extending their deployment. A key bottleneck is the cost and power consumption of available optical interconnects. To tackle these issues, we investigate the advancement of previously proposed all-optical solutions to be implemented in all-optical transceivers, discarding most of the power-hungry and costly DSP currently utilized in coherent receivers. Examining the optical link requirements for the targeted access/DCI networks, we present the design steps for a novel controller for all-optical polarization demultiplexing with a low-power footprint. We develop algorithms for polarization tracking in optical signal transmission through the fiber-optic link. In addition, we also present alternative solutions for the crucial function of carrier recovery in coherent receivers based on optical phase-locked loops.","PeriodicalId":288069,"journal":{"name":"2022 13th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124903509","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
High-sensitivity receivers for free-space optical transmission links 用于自由空间光传输链路的高灵敏度接收器
2022 13th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP) Pub Date : 2022-07-20 DOI: 10.1109/CSNDSP54353.2022.9907916
P. Andrekson
{"title":"High-sensitivity receivers for free-space optical transmission links","authors":"P. Andrekson","doi":"10.1109/CSNDSP54353.2022.9907916","DOIUrl":"https://doi.org/10.1109/CSNDSP54353.2022.9907916","url":null,"abstract":"We review sensitivity limitations of optical receivers used in long-haul FSO links and describe recent results using phase-sensitively pre-amplified receivers, with emphasis on cases where the received signals are very weak.","PeriodicalId":288069,"journal":{"name":"2022 13th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP)","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122677979","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Parallel Implementation of a Massive MIMO Linear Detector 大规模MIMO线性检测器的并行实现
2022 13th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP) Pub Date : 2022-07-20 DOI: 10.1109/CSNDSP54353.2022.9907964
Sayyed Shafivulla, A. Patel, Mohammed Zafar Ali Khan
{"title":"Parallel Implementation of a Massive MIMO Linear Detector","authors":"Sayyed Shafivulla, A. Patel, Mohammed Zafar Ali Khan","doi":"10.1109/CSNDSP54353.2022.9907964","DOIUrl":"https://doi.org/10.1109/CSNDSP54353.2022.9907964","url":null,"abstract":"Implementing the m-MIMO detectors and precoders requires a series of matrix-vector multiplications. These multiplications typically have iterative forms which are suitable for serial implementation. Serial implementations impose a significant delay into the system, impacting the system’s latency and making implementations a problem. This paper considers a recently proposed linear m-MIMO detector and presents an efficient parallel technique to compute the detector’s estimation vector. We implement the computation on the Nvidia Tesla T4 graphics processing unit (GPU) with compute unified device architecture (CUDA) application programming interface using Google colab. Numerical and implementation results are presented to quantity the speedup of the proposed parallel algorithm’s runtime as compared to existing parallel algorithms.","PeriodicalId":288069,"journal":{"name":"2022 13th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122064461","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Optimal Localization Design for Indoor Non-interfering LED-based System 室内无干扰led系统的优化定位设计
2022 13th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP) Pub Date : 2022-07-20 DOI: 10.1109/CSNDSP54353.2022.9907919
M. Hammouda, A. Vegni, V. Loscrí
{"title":"Optimal Localization Design for Indoor Non-interfering LED-based System","authors":"M. Hammouda, A. Vegni, V. Loscrí","doi":"10.1109/CSNDSP54353.2022.9907919","DOIUrl":"https://doi.org/10.1109/CSNDSP54353.2022.9907919","url":null,"abstract":"Visible Light Communications (VLC) systems are designed to guarantee the twofold paradigm of both illumination and communications, thus resulting as a green technology. Indeed, it is possible to reduce cost and energy consumption by minimizing the number of Light Emitting Diodes (LEDs), while still guaranteeing network performance. However, adapting existing VLC systems to offer localization services needs a few considerations, as localization requirements do not overlap with the communication ones. In order to guarantee localization services, Visible Light Positioning (VLP) systems should be designed accordingly in order to provide at least three optical signals per unknown location. In this paper, we design an indoor VLP network able to guarantee accurate localization estimate with a minimum number of LED devices. The proposed optimal LED deployment technique is designed for VLP network. Numerical results achieving a 20 cm localization accuracy are obtained for different geometrical settings.","PeriodicalId":288069,"journal":{"name":"2022 13th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP)","volume":"118 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123242685","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Contrast Enhancement Technique for Efficient Detection of Cloud from Remote Sensing Images 从遥感图像中高效检测云的对比度增强技术
2022 13th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP) Pub Date : 2022-07-20 DOI: 10.1109/CSNDSP54353.2022.9908012
D. Vijayalakshmi, M. K. Nath
{"title":"Contrast Enhancement Technique for Efficient Detection of Cloud from Remote Sensing Images","authors":"D. Vijayalakshmi, M. K. Nath","doi":"10.1109/CSNDSP54353.2022.9908012","DOIUrl":"https://doi.org/10.1109/CSNDSP54353.2022.9908012","url":null,"abstract":"Satellite imaging is essential for various applications, including disaster management and recovery, agriculture, and military intelligence. Clouds are a severe impediment to all of these applications, and they must be customarily identified and removed from a dataset before satellite images can be used for further processing. The quality of the satellite images is affected by various factors during the acquisition process. In this paper, an enhancement approach is proposed to improve the quality of the satellite images to improve the accuracy of the cloud detection process. The enhancement process utilizes the edge information extracted from the input image. The extracted edge information creates a variational map to equalize the intensities by distributing them to occupy the whole dynamic gray scale. Experiments have been performed to validate the efficiency of the enhancement process on the segmented results. The analysis shows that the enhancement process aids in improving the cloud detection, which is indicated by the high values of the performance measures such as accuracy, F1-score, Dice, and Jaccard coefficient compared with the un-processed images from the sentine1-2 remote sensing dataset.","PeriodicalId":288069,"journal":{"name":"2022 13th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP)","volume":"254 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131898675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Datacenter in the City: An overlay network for serving intra-city traffic between “metro islands” 城市中的数据中心:覆盖网络，为“城域岛”之间的城市内交通提供服务
2022 13th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP) Pub Date : 2022-07-20 DOI: 10.1109/CSNDSP54353.2022.9908008
P. Kokkinos, P. Soumplis
{"title":"Datacenter in the City: An overlay network for serving intra-city traffic between “metro islands”","authors":"P. Kokkinos, P. Soumplis","doi":"10.1109/CSNDSP54353.2022.9908008","DOIUrl":"https://doi.org/10.1109/CSNDSP54353.2022.9908008","url":null,"abstract":"The computing and networking infrastructures that operate inside the city boundaries have started to attract the academia’s and industry’s attention. It gets obvious that the future applications’ requirements can only be served if processing and storage is performed locally, which will increase the number of traffic flows between communicating parties that lie inside the city. Furthermore “local” mini-data centers are placed closer to the user. However, modifications to the current metropolitan network architecture, which is organized into “metro islands” that consist of access and metro segments, and the respective resource allocation mechanisms are required. In this work, we propose the Datacenter in the City architecture to serve the intra-city traffic. The proposed solution makes use of an overlay network with pre-reserved capacity that operates on top of the “ metro islands” to serve the high priority traffic in a way similar to the way bypasses or highways are used to decrease traffic congestion in the city center. The proposed architecture is viewed both from technological and from design and operation aspects. A resource allocation mechanism is presented that decides on the traffic and the respective workload that will be served locally withing the “metro islands” or that will utilize the overlay network so as to be served by other computing and storage facilities inside the same city.","PeriodicalId":288069,"journal":{"name":"2022 13th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130514110","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Use cases and drivers for optical grooming in 5G transport networks 5G传输网络中光修饰的用例和驱动程序
2022 13th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP) Pub Date : 2022-07-20 DOI: 10.1109/CSNDSP54353.2022.9908033
J. Palacios, L. Contreras, Ó. D. Dios, D. Larrabeiti, Gabriel Otero Pérez, J. A. Hernández
{"title":"Use cases and drivers for optical grooming in 5G transport networks","authors":"J. Palacios, L. Contreras, Ó. D. Dios, D. Larrabeiti, Gabriel Otero Pérez, J. A. Hernández","doi":"10.1109/CSNDSP54353.2022.9908033","DOIUrl":"https://doi.org/10.1109/CSNDSP54353.2022.9908033","url":null,"abstract":"The introduction of fine granularity flexible optical networking technology featuring SDN-based fast reconfigurability brings the possibility of using the optical layer as the multiplexing layer for highly variable traffic rather than the packet layer. This optical-by-passing approach brings relevant savings in packet switching and provides QoS guarantees hard to provide at the packet layer without over-provisioning. The paper discusses several use cases that illustrate the potential of Sliceable Bandwidth Variable Transponders (S-BVTs) as ultra-low latency optical grooming alternative, especially under the scope of 5G services.","PeriodicalId":288069,"journal":{"name":"2022 13th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123098306","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Path Selection for Relay-Assisted Underwater Visible Light Communication Systems 中继辅助水下可见光通信系统路径选择
2022 13th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP) Pub Date : 2022-07-20 DOI: 10.1109/CSNDSP54353.2022.9907939
M. Elamassie, M. Uysal
{"title":"Path Selection for Relay-Assisted Underwater Visible Light Communication Systems","authors":"M. Elamassie, M. Uysal","doi":"10.1109/CSNDSP54353.2022.9907939","DOIUrl":"https://doi.org/10.1109/CSNDSP54353.2022.9907939","url":null,"abstract":"In this paper, we consider underwater visible light communication (UVLC) system with M parallel relaying paths where each path has N decode-and-forward (DF) relays. One path (not necessarily the best one) out of M paths is selected for transmission. Such a multi-hop system is especially useful since some relay nodes might break down or malfunction and hence single path might not be sufficient. Furthermore, selection of the best path is not always possible due to several reasons such as the effect of noise on the estimation of the best path and feedback error. Under the assumption of lognormal (LN) turbulence channels, we derive a closed-form expression for the outage probability of UVLC system where the $m^{mathrm{th}}$ best path is selected for transmission. We then use our derived closed-form outage probability for investigating the so-called incremental diversity order (IDO).","PeriodicalId":288069,"journal":{"name":"2022 13th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP)","volume":"109 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131143472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
WSN Sensor Node Antenna Performance Under Fallen Leaves 落叶条件下WSN传感器节点天线性能研究
2022 13th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP) Pub Date : 2022-07-20 DOI: 10.1109/CSNDSP54353.2022.9907994
T. E. Oliveira, J. Reis, R. Caldeirinha
{"title":"WSN Sensor Node Antenna Performance Under Fallen Leaves","authors":"T. E. Oliveira, J. Reis, R. Caldeirinha","doi":"10.1109/CSNDSP54353.2022.9907994","DOIUrl":"https://doi.org/10.1109/CSNDSP54353.2022.9907994","url":null,"abstract":"In this paper, a study on the performance of a small sensor node antenna when covered with fallen leaves, is presented. Firstly, the Wireless Sensor Network (WSN) sensor node (SN) antenna considered for this work is being introduced. The antenna was already optimised in past author’s work and is being used herein for a comparative analysis. Performance analysis is then carried out in four different scenarios considering: the effects of the soil in the surroundings of the antenna and, the partial coverage of the antenna by pine tree leaves (i.e. pine needles) and Alfalfa leaves, considering 10% and 75% of moisture content. This study is performed via electromagnetic simulation using a full-wave electromagnetic solver (CST MWS) by means of antenna matching and radiation pattern characterisation. Finally, experimental results obtained on the field are also presented, for the case when the antenna is covered by pine leaves. According to both the simulation and measurement results, it is possible to conclude that the discarded leaves, negatively impact the performance of the antenna, generating shifts on the resonating frequency and typically reducing the overall gain of the antenna. The moisture content of the leaves also impact the antenna performance, specially for higher moisture content leaves.","PeriodicalId":288069,"journal":{"name":"2022 13th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP)","volume":"439 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132894286","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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