2020 IEEE Calcutta Conference (CALCON)最新文献_第2页

Boundary Detection in Dynamic Wireless Sensor Networks using Convex Hull Techniques 基于凸包技术的动态无线传感器网络边界检测

2020 IEEE Calcutta Conference (CALCON) Pub Date : 2020-02-01 DOI: 10.1109/CALCON49167.2020.9106533

T. K. Mishra, Jayadeep Sadhu, Arun K. Kumar

引用次数: 1

Kaiser Window Based Side Lobe Level Suppression in 3D Beamforming for Massive MIMO Structure 大规模MIMO结构三维波束形成中基于Kaiser窗的旁瓣电平抑制

2020 IEEE Calcutta Conference (CALCON) Pub Date : 2020-02-01 DOI: 10.1109/CALCON49167.2020.9106469

Tanmoy Kundu, Arijeet Ghosh, I. S. Misra, Salil Kumar Sanyal

{"title":"Kaiser Window Based Side Lobe Level Suppression in 3D Beamforming for Massive MIMO Structure","authors":"Tanmoy Kundu, Arijeet Ghosh, I. S. Misra, Salil Kumar Sanyal","doi":"10.1109/CALCON49167.2020.9106469","DOIUrl":"https://doi.org/10.1109/CALCON49167.2020.9106469","url":null,"abstract":"In this paper, a novel integrated 3D beamforming (3DBF) algorithm has been reported with Kaiser window based Side Lobe Level (SLL) suppression technique for 12 x 8 Massive Multiple Input Multiple Output (MIMO) receiving (R) antenna structure. The 3DBF can steer the main-lobe towards the desired direction and place null towards the undesired directions. The incorporation of the SLL suppression technique makes 3DBF algorithm less vulnerable to unforeseen and undesired signals in comparison with conventional 3DBF strategies having significant SLL. Accordingly, the proposed method is more suitable for 5G applications in terms of user tracking. In this work, a conventional beamforming strategy is employed firstly to evaluate the appropriate antenna weights for directing the main lobe towards the Desired Signal (DS) and nulls in the direction of the Undesired Signals (UDSs) followed by an algorithm that invokes SLL suppression. The proposed SLL suppression procedure exploits independent and individual low-pass filter based Kaiser windowing technique in the vertical and horizontal axes of the Rx antenna for minimizing the vertical and horizontal side lobes of the Radiation Pattern (RP) separately. This SLL suppression technique re-evaluates the antenna weights in such a manner that it can jointly form the desired 3D beam with suppressed SLL without changing the direction of the main beam. The elevation, azimuth, and 3D RPs have been generated to test the performance of the proposed algorithm in terms of SLL reduction and robustness. Approximately 72% improvement has been observed in the first SLL of the RP. This 3DBF algorithm based on SLL reduction methodology is much faster than any evolutionary optimization algorithm which needs an iterative technique for SLL suppression.","PeriodicalId":318478,"journal":{"name":"2020 IEEE Calcutta Conference (CALCON)","volume":"118 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134027823","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

Indoor Optical Intercom System: Application of Visible Light Communication system for audio transmission using PDM 室内光对讲系统:可视光通信系统在PDM音频传输中的应用

2020 IEEE Calcutta Conference (CALCON) Pub Date : 2020-02-01 DOI: 10.1109/CALCON49167.2020.9106557

Basudeb Das, Tapas Maity, S. Mazumdar

引用次数: 0

A Multi-functional Diversity Antenna with High Wideband Isolation 高宽带隔离的多功能分集天线

2020 IEEE Calcutta Conference (CALCON) Pub Date : 2020-02-01 DOI: 10.1109/CALCON49167.2020.9106474

Jeet Banerjee, Suvajit Mallick, R. Ghatak

{"title":"A Multi-functional Diversity Antenna with High Wideband Isolation","authors":"Jeet Banerjee, Suvajit Mallick, R. Ghatak","doi":"10.1109/CALCON49167.2020.9106474","DOIUrl":"https://doi.org/10.1109/CALCON49167.2020.9106474","url":null,"abstract":"A physically small, coplanar waveguide (CPW) fed wideband multi-functional diversity antenna possessing high isolation is suggested in this paper. The numerical investigation depicts that a wide bandwidth ranging from 2.2 GHz–10 GHz is achieved using the intended layout. Owning a large impedance bandwidth, the antenna covers both, 2.4 GHz wireless local area network (WLAN) as well as 3.1-10 GHz ultra-wideband (UWB) spectrum. The proposed antenna exploits fractal star shaped monopoles for providing wideband isolation as well as impedance matching. High isolation (>15 dB) in the proposed diversity system is attained by using two rectangular defects in the shared ground plane and an inverted T-shaped stub. A high isolation of -29.4 dB for the 2.4 GHz (WLAN) band and >15 dB for the UWB band are attained respectively. The numerical analysis of the diversity parameters shows that the envelope correlation coefficient (ECC) is well below the practical verge of 0.5. The maximum realized gain of the proposed antenna is found to be 2.86 dBi. The consistency among distinct numerical outcomes strengthens the candidature of the proposed antenna for multifunction wideband diversity applications.","PeriodicalId":318478,"journal":{"name":"2020 IEEE Calcutta Conference (CALCON)","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134575525","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

Three-phase Sine Wave Inverter using Natural Harmonic Compensation 采用自然谐波补偿的三相正弦波逆变器

2020 IEEE Calcutta Conference (CALCON) Pub Date : 2020-02-01 DOI: 10.1109/CALCON49167.2020.9106544

S. Dasgupta, S. Biswas

{"title":"Three-phase Sine Wave Inverter using Natural Harmonic Compensation","authors":"S. Dasgupta, S. Biswas","doi":"10.1109/CALCON49167.2020.9106544","DOIUrl":"https://doi.org/10.1109/CALCON49167.2020.9106544","url":null,"abstract":"Power electronic inverters produce flat-topped wave-shapes with sharp voltage rise and fall due to switching operation of the semiconductor switches, injecting substantial harmonics into the load that lead to its undesired behavior. Hence, an additional low-pass filter is required at the output side of the inverter in order to eliminate the harmonics and to supply sinusoidal fundamental voltage only to the load. The filters are often bulky to mitigate the Total Harmonic Distortion (THD) of the inverter voltage waveform to acceptable limits. Alternatively, special Pulse Width Modulation (PWM) techniques are used to obtain low voltage harmonics at the cost of low fundamental output voltage and high switching loss. This paper applies the technique of Natural Compensation of Harmonic voltages through active compensation to reduce the filter requirement of a three phase inverter and increase its DC bus utilization. The DC bus voltage of the compensator is inherently lower than the input DC bus due to the stepped load waveform used, permitting use of low voltage, higher switching frequency devices with lower switching loss. Since the main inverter is switched at low frequency, the total system loss is at moderate value.","PeriodicalId":318478,"journal":{"name":"2020 IEEE Calcutta Conference (CALCON)","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133104700","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

An Axis Based Mean Filter for Removing High-Intensity Salt and Pepper Noise 一种基于轴的均值滤波器去除高强度的椒盐噪声

2020 IEEE Calcutta Conference (CALCON) Pub Date : 2020-02-01 DOI: 10.1109/CALCON49167.2020.9106561

A. Kundu, Sumanta Banerje, Chittabarni Sarkar, Souptik Barman

引用次数: 8

Estimation of Alternator Rotor Angle by using Synchronized Voltage and Current Phasors 用同步电压和电流相量估计交流发电机转子角度

2020 IEEE Calcutta Conference (CALCON) Pub Date : 2020-02-01 DOI: 10.1109/CALCON49167.2020.9106471

Mukesh Kumar, Shaik Affijulla

引用次数: 0

Content Driven Proportionate Channel Allocation Scheme for Scalable Video over Cognitive Radio Network 认知无线网络上可扩展视频的内容驱动比例信道分配方案

2020 IEEE Calcutta Conference (CALCON) Pub Date : 2020-02-01 DOI: 10.1109/CALCON49167.2020.9106530

Sudipta Dey, I. S. Misra

引用次数: 1

Analyzing Large News Corpus Using Text Mining Techniques for Recognizing High Crime Prone Areas 利用文本挖掘技术分析大型新闻语料库，识别犯罪高发区

2020 IEEE Calcutta Conference (CALCON) Pub Date : 2020-02-01 DOI: 10.1109/CALCON49167.2020.9106554

Sumanta Mukherjee, K. Sarkar

{"title":"Analyzing Large News Corpus Using Text Mining Techniques for Recognizing High Crime Prone Areas","authors":"Sumanta Mukherjee, K. Sarkar","doi":"10.1109/CALCON49167.2020.9106554","DOIUrl":"https://doi.org/10.1109/CALCON49167.2020.9106554","url":null,"abstract":"For any developing country, crime rate analysis over different states and different districts for each state is an important task. For having a gross view of crime rates, online newspapers can be used as a useful resource for such tasks. Since all types of crimes are not reported to the police department and the reported crime data may not be easily accessible by the common people, the crime location information can be extracted from online local newspapers and/or national newspapers and the extracted information can be used for counting crime incidents for a location or an area. But, processing the huge collection of newspapers and extracting crime locations from them is not a trivial task. This task can be roughly divided into two main parts, the first part is to filter the crime news articles from the automatically downloaded news collection and the second part is the crime location extraction from each news article. Our proposed system does this task automatically through mining the collection of newspapers written in the Bengali language. To get the picture of high crime prone locations in a state, the proposed system visualizes the crime count per district in a state. Our system is tested on data related to the state of West Bengal. To generate the location wise crime histogram, this system can be used as a tool.","PeriodicalId":318478,"journal":{"name":"2020 IEEE Calcutta Conference (CALCON)","volume":"203 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129703452","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: 8

Multi-dimensional ANN Application for Active Power Flow State Classification on a Utility System 多维神经网络在电力系统有功潮流状态分类中的应用

2020 IEEE Calcutta Conference (CALCON) Pub Date : 2020-02-01 DOI: 10.1109/CALCON49167.2020.9106479

Shubhranshu Kumar Tiwary, J. Pal, C. K. Chanda

{"title":"Multi-dimensional ANN Application for Active Power Flow State Classification on a Utility System","authors":"Shubhranshu Kumar Tiwary, J. Pal, C. K. Chanda","doi":"10.1109/CALCON49167.2020.9106479","DOIUrl":"https://doi.org/10.1109/CALCON49167.2020.9106479","url":null,"abstract":"A multi-dimensional ANN has been applied to identify the states of a power network in real-time. Large power systems have multiple transmission lines and crucial parameters on each line to be monitored in real-time which is very complicated, considering the number of parameters to be monitored on each line. After any contingency the power system could transit from normal state to the emergency state within a matter of seconds. These transitions of states could be unprecedented or unexpected at times, and in such a scenario, deciding which lines should be highly ranked in the new steady state, for operator decisions, can be very complicated at times. In this paper, extensive load flow studies have been studied, considering N-1 contingencies. Then for each scenario the power flow on the lines remaining in service have been recorded. Using these recorded data, the power system operation has been classified in the 5 different states, namely, normal, alert, emergency, extreme emergency and restorative states. These data are then used to train a multi-dimensional feed-forward neural network to identify the states in real-time in Software-InLoop (SIL). This paper proposes a multi-dimensional neural network with as many numbers of input nodes as the number of lines and 5 output nodes for the 5 state classifications. This type of ANN could help the Power System Engineer (PSE) to take crucial decisions in the event of severe contingencies in the power network.","PeriodicalId":318478,"journal":{"name":"2020 IEEE Calcutta Conference (CALCON)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130170340","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