2018 Twenty Fourth National Conference on Communications (NCC)最新文献_第7页

Hybrid Satellite-Terrestrial Cooperative Communication with Mobile Terrestrial Nodes 基于移动地面节点的星地混合协同通信

2018 Twenty Fourth National Conference on Communications (NCC) Pub Date : 2018-02-01 DOI: 10.1109/NCC.2018.8599994

Neeraj Varshney, A. Jagannatham

{"title":"Hybrid Satellite-Terrestrial Cooperative Communication with Mobile Terrestrial Nodes","authors":"Neeraj Varshney, A. Jagannatham","doi":"10.1109/NCC.2018.8599994","DOIUrl":"https://doi.org/10.1109/NCC.2018.8599994","url":null,"abstract":"This work investigates the performance of hybrid satellite-terrestrial systems over time-selective fading links arising due to the node mobility with multiple relay based selective decode-and-forward cooperation. The aerial satellite-to-relay and satellite-to-destination links are non-identical time-selective shadowed Rician fading in nature, whose parameters depend on the elevation angle of the satellite, whereas the terrestrial relay-destination links are assumed to be non-identical time-selective generalized Nakagami faded. Closed form expressions are derived for the per-frame average symbol error rate (SER) and asymptotic SER floor considering the transmission of Mary PSK modulated symbols. It is observed that the time-varying nature of the links significantly degrades the system performance. Further, the impact of the satellite elevation angles at the terrestrial nodes is explicitly demonstrated through simulations, along with the effect of preamble versus midamble for channel estimation. The error rate of the system is seen to reduce significantly with increasing satellite elevation angle at the relay when the satellite-destination link experiences frequent heavy shadowing (FHS) and the relay-destination links are relatively strong. However, for other scenarios when the relay-destination links are relatively weak and satellite-relay links experience FHS, significant performance improvement can be seen by increasing the satellite elevation angle at the destination UE.","PeriodicalId":121544,"journal":{"name":"2018 Twenty Fourth National Conference on Communications (NCC)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125477640","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: 4

A Polarization-Independent Tunable Microwave Absorber with Wide Tuning Range 具有宽调谐范围的偏振无关可调谐微波吸收器

2018 Twenty Fourth National Conference on Communications (NCC) Pub Date : 2018-02-01 DOI: 10.1109/NCC.2018.8600063

Saptarshi Ghosh, Harsh Sheokand, K. V. Srivastava

引用次数: 0

Channel Allocation for Multiple D2D-Multicasts in Underlay Cellular Networks using Outage Probability Minimization 基于中断概率最小化的底层蜂窝网络中多个d2d组播信道分配

2018 Twenty Fourth National Conference on Communications (NCC) Pub Date : 2018-02-01 DOI: 10.1109/NCC.2018.8599925

Ajay Bhardwaj, S. Agnihotri

引用次数: 3

Performance Evaluation and Optimization of Multiantenna Two-Way Relaying System with CCI 带CCI的多天线双向中继系统性能评估与优化

2018 Twenty Fourth National Conference on Communications (NCC) Pub Date : 2018-02-01 DOI: 10.1109/NCC.2018.8599943

Imtiyaz Khan, Krishna Kanth Dhulipudi, Poonam Singh

引用次数: 0

A Study on Pathloss Model for UAV Based Urban Disaster and Emergency Communication Systems 基于无人机的城市灾害应急通信系统路径损失模型研究

2018 Twenty Fourth National Conference on Communications (NCC) Pub Date : 2018-02-01 DOI: 10.1109/NCC.2018.8600260

A. Ranjan, B. Panigrahi, H. Rath, P. Misra, Anantha Simha, H. B. Sahu

{"title":"A Study on Pathloss Model for UAV Based Urban Disaster and Emergency Communication Systems","authors":"A. Ranjan, B. Panigrahi, H. Rath, P. Misra, Anantha Simha, H. B. Sahu","doi":"10.1109/NCC.2018.8600260","DOIUrl":"https://doi.org/10.1109/NCC.2018.8600260","url":null,"abstract":"In recent times, airborne Base Station (BS) or Unmanned Aerial Vehicle (UAV) mounted Evolved Node B (UeNBs) are used to provide broadband services, and rescue responses in emergency and natural disaster scenarios. Most of the prior studies on airborne BS assume outdoor users only and consider their position coordinates in a two-dimensional (2-D) plane considering only Euclidean distance based pathloss. However in urban natural disaster scenarios such as flooding or cyclone, users are trapped inside single or multi-storey buildings; user positions are in three-dimensional (3-D) plane. Reliable communication and rescue operations in such situation is possible if pathloss characteristics for both, user to UeNB (uplink) and vice versa (downlink), are known a-priori. Since pathloss in above scenarios is a combination of indoor and outdoor component, it becomes a challenge to adopt appropriate model which can be used during communications. In this paper, we have studied several state-of-the-art pathloss models applicable in the above scenarios and compared their performances. We have also studied the impact of indoor and outdoor environments on the uplink and downlink pathloss models. Our extensive simulation results give a full fledged insight to uplink and downlink channel characteristics of UAV based wireless emergency communication system. From our extensive studies and simulations, we have learnt that Winner II model [1] with additional indoor blockage component provides the best pathloss model for an urban emergency scenario. Furthermore, we have also analyzed the impact of different topological parameters such as UeNB hovering altitude, building heights, indoor and outdoor distance of users, etc., on the pathloss characteristics.","PeriodicalId":121544,"journal":{"name":"2018 Twenty Fourth National Conference on Communications (NCC)","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116596910","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: 15

A Simple Robust Equal-Split T-Junction Power Divider at Three Frequencies 一个简单的鲁棒等分裂t结功率分压器在三个频率

2018 Twenty Fourth National Conference on Communications (NCC) Pub Date : 2018-02-01 DOI: 10.1109/NCC.2018.8600226

D. Banerjee, A. Saxena, M. Hashmi

引用次数: 1

Balanced Use of Battery Power in Ad-hoc Wireless Sensor Networks 自组织无线传感器网络中电池电量的均衡使用

2018 Twenty Fourth National Conference on Communications (NCC) Pub Date : 2018-02-01 DOI: 10.1109/NCC.2018.8600143

Hemant Aggarwal, Santosh Shah

{"title":"Balanced Use of Battery Power in Ad-hoc Wireless Sensor Networks","authors":"Hemant Aggarwal, Santosh Shah","doi":"10.1109/NCC.2018.8600143","DOIUrl":"https://doi.org/10.1109/NCC.2018.8600143","url":null,"abstract":"We focused on a problem where balanced use of sensor nodes' battery power is considered to maximize the overall lifetime of ad-hoc Wireless Sensor Networks. A process in which utilizing less attended sensor nodes compare to sensor nodes which are used more frequently enhances the overall network lifetime. To perform this process, we propose a joint optimization problem to select a subset of active sensor nodes and a multi-hop routing structure interconnecting all selected sensor nodes, which helps to route the aggregated information to a querying node. Our optimization problem becomes non-convex over the subset selection and the multi-hop routing paths selection, thus belonging to the class of NP-hard problems. We solve our problem by relaxing one of the variable so that optimization problem becomes convex over this variable, which can be solved efficiently. We also propose an iterative algorithm to solve this problem distributively. We demonstrate by extensive simulation that the above mentioned both the approaches increase the overall network lifetime for a given power budget. One another important result is that the distributed approach provides an optimal routing structure considering over the well known shortest path tree based routing structure.","PeriodicalId":121544,"journal":{"name":"2018 Twenty Fourth National Conference on Communications (NCC)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125382177","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

Training-Based Joint Antenna and Relay Selection in Multiuser Downlink Cellular Network with RF Impairments 射频损伤下多用户蜂窝网络中基于训练的联合天线和中继选择

2018 Twenty Fourth National Conference on Communications (NCC) Pub Date : 2018-02-01 DOI: 10.1109/NCC.2018.8600092

A. Mishra, Poonam Singh

{"title":"Training-Based Joint Antenna and Relay Selection in Multiuser Downlink Cellular Network with RF Impairments","authors":"A. Mishra, Poonam Singh","doi":"10.1109/NCC.2018.8600092","DOIUrl":"https://doi.org/10.1109/NCC.2018.8600092","url":null,"abstract":"We analyze the performance of a dual-hop downlink cellular amplify-and-forward cooperative system in the presence of both channel estimation errors and radio frequency (RF) impairments, where multiple antennas are deployed only at the base station (BS) and single-antenna at relays and mobile stations (MS). Specifically, we derive approximate as well as exact closed-form expressions for the outage probability and expected spectral efficiency. In addition, simple asymptotic expressions at the high signal-to-noise ratio (SNR) regime are obtained, which facilitate the characterization of the achievable diversity order of the system. To validate the derived analytical expressions, we presented simulation results which are sufficiently tight across the entire range of SNRs. Findings of the paper suggest that full diversity order can be achieved only when the RF front-end hardware is assumed to be perfect, while in practice the imperfections in hardware are inevitable and reduce diversity order of the system. Moreover, the influence of key parameters such as the number of antennas, users, and relays on the system performance has been presented with the influence of the level of RF impairments.","PeriodicalId":121544,"journal":{"name":"2018 Twenty Fourth National Conference on Communications (NCC)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125382705","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

A Deep Learning Based Technique for Anomaly Detection in Surveillance Videos 基于深度学习的监控视频异常检测技术

2018 Twenty Fourth National Conference on Communications (NCC) Pub Date : 2018-02-01 DOI: 10.1109/NCC.2018.8599969

Prakhar Singh, Vinod Pankajakshan

引用次数: 22

Deterministic Evolution Through Indexed Leaf Node Based Attachment in Complex Networks 复杂网络中基于索引叶节点连接的确定性进化

2018 Twenty Fourth National Conference on Communications (NCC) Pub Date : 2018-02-01 DOI: 10.1109/NCC.2018.8599918

G. Suresh, Abhishek Chakraborty, B. S. Manoj

引用次数: 0