2022 National Conference on Communications (NCC)最新文献_第6页

Multiplexed Principal Modes in Few-Mode Fiber Links With Limited Delayed Feedback 具有有限延迟反馈的少模光纤链路中的多路主模

2022 National Conference on Communications (NCC) Pub Date : 2022-05-24 DOI: 10.1109/NCC55593.2022.9806787

Anju Radhakrishnan, K. Appaiah

{"title":"Multiplexed Principal Modes in Few-Mode Fiber Links With Limited Delayed Feedback","authors":"Anju Radhakrishnan, K. Appaiah","doi":"10.1109/NCC55593.2022.9806787","DOIUrl":"https://doi.org/10.1109/NCC55593.2022.9806787","url":null,"abstract":"The use of channel state information (CSI) at the transmitter significantly enhances the performance of wireless communication systems. However, the requirement of CSI feed-back increases the burden on the reverse link, especially in links that employ multiple-input multiple-output (MIMO), where CSI takes the form of scalar parameters of the Principal Modes (PMs). Typical deployments use quantization and feedback of CSI at certain wavelengths of the dense wavelength division multiplexing (DWDM) grid, with interpolation to fill in missing CSI at the transmitter. Past work has used the Linde-Buzo-Gray algorithm (LBG) algorithm for quantization and interpolation of CSI. This paper includes the parameterization of the PMs into scalar parameters that are subjected to quantization and interpolation. we exploit another degree of flexibility by the ordering of the singular vectors of unitary PMs. This results in significant savings over the previous approaches to quantize PMs without any loss in performance. Further, simulations reveal that the proposed Flag manifold quantization and interpolation effectively enhance achievable rates with limited complexity.","PeriodicalId":403870,"journal":{"name":"2022 National Conference on Communications (NCC)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125469913","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

Sequential Nonparametric K-Medoid Clustering of Data Streams 数据流的序贯非参数k -媒质聚类

2022 National Conference on Communications (NCC) Pub Date : 2022-05-24 DOI: 10.1109/NCC55593.2022.9806794

Sreeram C. Sreenivasan, S. Bhashyam

引用次数: 1

Uplink Throughput Enhancement by Employing Transmit-only AUX Antennas at Nomadic Terminals: A Capacity Analysis 在游牧终端采用仅发射的AUX天线提高上行吞吐量:容量分析

2022 National Conference on Communications (NCC) Pub Date : 2022-05-24 DOI: 10.1109/NCC55593.2022.9806788

Ashok Kumar, S. R. Pillai

{"title":"Uplink Throughput Enhancement by Employing Transmit-only AUX Antennas at Nomadic Terminals: A Capacity Analysis","authors":"Ashok Kumar, S. R. Pillai","doi":"10.1109/NCC55593.2022.9806788","DOIUrl":"https://doi.org/10.1109/NCC55593.2022.9806788","url":null,"abstract":"Employing transmit only AUX antennas is a rela-tively cheap way of enhancing the communication throughput of lightweight UAVs, nodes in unmanned field expeditions, racing circuits etc, where increased data-rate demands from the nomadic terminals to the base station (BS) may happen intermittently. Asymmetric load demands in the uplink often call for augmented infrastructure at the nomadic terminals or UEs. By omitting multiple receive chains onboard (along with the requirements of oversampling, synchronization and heterodyning), considerable savings in energy, ergonomics and cost is afforded by employing commercially available transmit only AUX antennas, along with the MAIN antenna subsystem possessing its own dedicated receive chain. The absence of AUX receive chains brings new design chal-lenges, for example, estimating the full channel becomes trouble-some at the UE, particularly when the BS has a large number of antennas. On the other hand, the MIMO capacity at high SNRs, effectively the full degrees of freedom, can be achieved even when the channel state information (CSI) is available only at the receiver, for many scattering environments. This motivates us to analyze the situation where the receiving BS has full CSI, however the UE transmitter only knows the CSI from its main antenna system. Channel statistics are assumed to be known at all the terminals. We investigate the uplink ergodic Shannon capacity of the resulting partial CSI MIMO system, and propose transmission schemes which are almost optimal, at all SNRs of interest. Our results show that even using a single additional AUX can provide 60 -70% capacity improvement for a receiver with more than two receive antennas, even at moderate SNRs.","PeriodicalId":403870,"journal":{"name":"2022 National Conference on Communications (NCC)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116641256","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

QoS-aware Dynamic Network Slicing and VNF Embedding in Softwarized 5G Networks 软件5G网络中qos感知的动态网络切片和VNF嵌入

2022 National Conference on Communications (NCC) Pub Date : 2022-05-24 DOI: 10.1109/NCC55593.2022.9806465

Deborsi Basu, Abhishek Jain, Uttam Ghosh, R. Datta

{"title":"QoS-aware Dynamic Network Slicing and VNF Embedding in Softwarized 5G Networks","authors":"Deborsi Basu, Abhishek Jain, Uttam Ghosh, R. Datta","doi":"10.1109/NCC55593.2022.9806465","DOIUrl":"https://doi.org/10.1109/NCC55593.2022.9806465","url":null,"abstract":"The inclusion of Network Function Virtualization (NFV) and Software-Defined Networking in next-generation communication networks (e.g., 5G and beyond) influence Telecommunication Service Providers (TSPs) to deploy Virtual Network Functions (VNFs) to improve network performance without in-curring additional usage of network resources. The softwarization and virtualization of network resources uplift the Network Slicing (NS) concept to optimally place the VNF instances over Service Function Chains (SFCs) for superior service delivery. Limited network capacity and storage work as a major hindrance toward better Quality-of-Service (QoS), so optimal VNF embedding over SFCs becomes an obligatory aspect. In this work, we have studied the VNF embedding problem (VNF-EP) over SFC instances for Softwarized 5G Networks. We have proposed a novel approach for dynamic VNF sharing over multiple SFCs, considering the flow requests of SFC for individual Network Slice. The inter-slice co-ordinations are done considering the common service requests among independent and heterogeneous Slices. The mathematical formulation follows a MILP based optimization approach that optimally controls the VNF sharing to increase network efficiency and hardware usage. This flexible and shareable VNF embedding approach (FlexShare-VNF) results in significant energy-efficient service delivery in a low latency environment, and our performance evaluation also supports the claim. This approach will be extremely helpful for smooth network up-gradation in resource-restricted environments for future network advancements.","PeriodicalId":403870,"journal":{"name":"2022 National Conference on Communications (NCC)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115217901","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

GoPro: a Low Complexity Task Allocation Algorithm for a Mobile Edge Computing System GoPro:一种移动边缘计算系统的低复杂度任务分配算法

2022 National Conference on Communications (NCC) Pub Date : 2022-05-24 DOI: 10.1109/NCC55593.2022.9806731

Arghyadip Roy, Nilanjan Biswas

引用次数: 1

Performance Analysis of IRS-Assisted Hybrid FSO/RF Communication System 红外辅助FSO/RF混合通信系统性能分析

2022 National Conference on Communications (NCC) Pub Date : 2022-05-24 DOI: 10.1109/NCC55593.2022.9806764

Sandesh Sharma, Narendra Vishwakarma, R. Swaminathan

{"title":"Performance Analysis of IRS-Assisted Hybrid FSO/RF Communication System","authors":"Sandesh Sharma, Narendra Vishwakarma, R. Swaminathan","doi":"10.1109/NCC55593.2022.9806764","DOIUrl":"https://doi.org/10.1109/NCC55593.2022.9806764","url":null,"abstract":"Free space optics (FSO) communication is seen as a cost-effective way to provide higher bandwidth, higher data rates, better link security, higher immunity to interference, etc., compared to radio frequency (RF) communication over short link distances. Despite these advantages, FSO link is severely affected by pointing errors, atmospheric turbulence, and signal loss due to the obstructions caused by buildings, trees, mountains, etc. In this paper, we propose a hybrid communication system model consisting of a FSO subsystem backed by a reliable RF subsystem with the goal to improve the coverage and system reliability. In addition, both the FSO and RF subsystems are assisted by intelligent reflecting surfaces (IRS). Specifically, we carry out the performance analysis of the IRS-assisted hybrid FSO/RF system by deriving approximate closed-form expressions for outage probability, average bit error rate (BER), and ergodic channel capacity assuming intensity modulation/direct detection (IM/DD) technique. The numerical results are shown along with insightful discussions. It is observed from the numerical results that the system performance improves as the number of elements in IRS increases. Further, the IRS-assisted hybrid FSO/RF system performs better in terms of ergodic capacity and average BER than the existing FSO and hybrid FSO/RF systems. Finally, Monte-Carlo simulations are presented to verify the correctness of the analytical results.","PeriodicalId":403870,"journal":{"name":"2022 National Conference on Communications (NCC)","volume":"375 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122772178","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: 3

SVM-D: Efficient SHVC Video Multicast through D2D Offloading over 5G Cellular Networks SVM-D: 5G蜂窝网络上基于D2D卸载的高效SHVC视频多播

2022 National Conference on Communications (NCC) Pub Date : 2022-05-24 DOI: 10.1109/NCC55593.2022.9806791

P. Barik, R. Datta

{"title":"SVM-D: Efficient SHVC Video Multicast through D2D Offloading over 5G Cellular Networks","authors":"P. Barik, R. Datta","doi":"10.1109/NCC55593.2022.9806791","DOIUrl":"https://doi.org/10.1109/NCC55593.2022.9806791","url":null,"abstract":"Device-to-Device (D2D) offloading is an emerging technique in 5G where cache-enabled mobile devices receive data from a base station and distribute to the users within its D2D coverage. Storage capacity and battery energy limitation impose additional constraints in implementing such techniques. In this paper, we propose a novel D2D offloading scheme (SVM-D) for multicast transmissions of Scalable High Efficiency Video Coding (SHVC) videos in 5G multimedia mobile wireless networks. Instead of selecting a single cluster head, SVM-D selects multiple users for caching and forwarding scalable video content to the cluster members. A hybrid approach has been adopted for selecting a subset of users as the potential D2D transmitters (cluster heads) depending on their device category, channel quality, and available battery energy. The objective is to reduce the resource utilization at BSs and to increase the cluster lifetime while providing sufficient quality of experience (QoE) to the users. The local servers (i.e., mobile edge computing servers) perform an on-demand SHVC encoding of multimedia content and distribute it to the users via base stations. We evaluate the performance of SVM-D in terms of its overall resource utilization, average battery lifetime, and average QoE of the cluster users. The comparison is made with conventional unicast and multicast schemes in 5G network with and without D2D offloading scheme (where a single cluster head stores and forwards the data). Simulation results show that SVM-D out performs other popular existing schemes from the literature.","PeriodicalId":403870,"journal":{"name":"2022 National Conference on Communications (NCC)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131273792","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

Low-Resource Dialect Identification in Ao Using Noise Robust Mean Hilbert Envelope Coefficients 基于噪声鲁棒均值希尔伯特包络系数的Ao低资源方言识别

2022 National Conference on Communications (NCC) Pub Date : 2022-05-24 DOI: 10.1109/NCC55593.2022.9806808

Moakala Tzudir, Mrinmoy Bhattacharjee, Priyankoo Sarmah, S. Prasanna

引用次数: 0

Performance Analysis of RIS Aided IBFD STAR Wireless Networks RIS辅助IBFD STAR无线网络的性能分析

2022 National Conference on Communications (NCC) Pub Date : 2022-05-24 DOI: 10.1109/NCC55593.2022.9806723

Atiquzzaman Mondal, S. Biswas

引用次数: 1

Improved Language Models for ASR using Written Language Text 基于书面语言文本的ASR改进语言模型

2022 National Conference on Communications (NCC) Pub Date : 2022-05-24 DOI: 10.1109/NCC55593.2022.9806803

Kaustuv Mukherji, Meghna Pandharipande, Sunil Kumar Kopparapu

引用次数: 1