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2015 International Conference on Microwave, Optical and Communication Engineering (ICMOCE)最新文献

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Efficient high gain circularly polarized microstrip antenna using asymetrical RIS surface 采用非对称RIS表面的高效高增益圆极化微带天线
2015 International Conference on Microwave, Optical and Communication Engineering (ICMOCE) Pub Date : 2015-12-01 DOI: 10.1109/ICMOCE.2015.7489697
Vijaypal Yadav, S. Bhujade, Rajivkumar Gupta
{"title":"Efficient high gain circularly polarized microstrip antenna using asymetrical RIS surface","authors":"Vijaypal Yadav, S. Bhujade, Rajivkumar Gupta","doi":"10.1109/ICMOCE.2015.7489697","DOIUrl":"https://doi.org/10.1109/ICMOCE.2015.7489697","url":null,"abstract":"In this paper an efficient high gain circularly polarized antenna is proposed. A circularly polarized metal plated antenna is designed and an asymmetrical reactive impedance surface (RIS) is fabricated on a FR4 superstrate and placed above the antenna to increase the 3 dB axial ratio bandwidth. The antenna provides S11 less than -20 dB and 3 dB axial ratio bandwidth over 5.699-5.912 GHz. The antenna offers 9.9 dBi gain, more than 90 % antenna efficiency and more than 20 dB F/B lobe ratio. Side lobe level is <;-20 dB and cross polarization is <; -15 dB. The antenna is fabricated and tested. The measured results agree with simulation results. The overall antenna dimensions are 60 mm × 60 mm × 4.6 mm.","PeriodicalId":352568,"journal":{"name":"2015 International Conference on Microwave, Optical and Communication Engineering (ICMOCE)","volume":"136 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115893443","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
Review of the ultra wideband pulse generation 超宽带脉冲产生技术综述
2015 International Conference on Microwave, Optical and Communication Engineering (ICMOCE) Pub Date : 2015-12-01 DOI: 10.1109/ICMOCE.2015.7489754
T. Prakash, D. Ghosh
{"title":"Review of the ultra wideband pulse generation","authors":"T. Prakash, D. Ghosh","doi":"10.1109/ICMOCE.2015.7489754","DOIUrl":"https://doi.org/10.1109/ICMOCE.2015.7489754","url":null,"abstract":"Over the past decade, extensive research work in the field of Ultra Wideband(UWB) technology has given fascinating results in many applications. Initially UWB was developed as a military tool but recently it has been applied in consumer electronics and communication as well as in medical imaging. To implement this technology, it is required to generate subnanosecond pulses. At the beginning it was generated by spark gap techniques, but over time the pulse generation technique has changed. Recently, Step Recovery Diode (SRD) and Microwave transistors are widely used for the generation of UWB subnanosecond pulses. This paper present review of the principles of generation of UWB subnanosecond pulses.","PeriodicalId":352568,"journal":{"name":"2015 International Conference on Microwave, Optical and Communication Engineering (ICMOCE)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124284150","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
Frequency reconfigurable monopole antenna loaded with dielectric resonator 加载介电谐振器的频率可重构单极天线
2015 International Conference on Microwave, Optical and Communication Engineering (ICMOCE) Pub Date : 2015-12-01 DOI: 10.1109/ICMOCE.2015.7489677
Biswajit Dwivedy, S. Behera, D. Mishra
{"title":"Frequency reconfigurable monopole antenna loaded with dielectric resonator","authors":"Biswajit Dwivedy, S. Behera, D. Mishra","doi":"10.1109/ICMOCE.2015.7489677","DOIUrl":"https://doi.org/10.1109/ICMOCE.2015.7489677","url":null,"abstract":"A frequency reconfigurable antenna using two monopoles integrated on a single ground plane is proposed. One of the monopoles is loaded with ring shaped dielectric resonator for wide-band performance along with frequency agility. The antenna is excited by a switching network consisting of a low loss GaAs SPDT switch for independent operation at different frequencies of 4.53 GHz and 4.82 GHz. Different modes are excited in the DRA for switching conditions of the monopoles which result 23% and 29% of impedance bandwidth, confirming the bandwidth varying characteristic of the antenna. The antenna exhibits stable monopole type omnidirectional radiation pattern with realized gain varying from 1.1 dB-4.6 dB throughout the band which makes suitable for many C-band wireless applications.","PeriodicalId":352568,"journal":{"name":"2015 International Conference on Microwave, Optical and Communication Engineering (ICMOCE)","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124426446","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: 6
Temporal-domain filtering approach for multiband speech enhancement 多频带语音增强的时域滤波方法
2015 International Conference on Microwave, Optical and Communication Engineering (ICMOCE) Pub Date : 2015-12-01 DOI: 10.1109/ICMOCE.2015.7489773
M. P. Actlin Jeeva, T. Nagarajan, P. Vijayalakshmi
{"title":"Temporal-domain filtering approach for multiband speech enhancement","authors":"M. P. Actlin Jeeva, T. Nagarajan, P. Vijayalakshmi","doi":"10.1109/ICMOCE.2015.7489773","DOIUrl":"https://doi.org/10.1109/ICMOCE.2015.7489773","url":null,"abstract":"Conventional multiband speech enhancement involves splitting the noisy speech spectrum into various frequency bins and performing spectral domain speech enhancement in each band independently. When multibands are obtained by splitting the spectra, influence of spectral components in a band over the neighboring band components are appreciable, that reduces the effectiveness of clean speech estimation. To reduce this influence, in the current work clean speech estimation is performed by filtering the noisy speech in the temporal-domain into various ERB-based sub-bands followed by spectral domain speech enhancement in each band using DCT-based MMSE estimator. Further an approach is proposed, to calculate apriori speech presence/absence probability based on apriori SNR. The performance of speech enhancement algorithms are evaluated using objective measures such as, PESQ and composite speech quality measure.","PeriodicalId":352568,"journal":{"name":"2015 International Conference on Microwave, Optical and Communication Engineering (ICMOCE)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114769153","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: 5
A review on recent advances in spectrum sensing, energy efficiency and security threats in cognitive radio network 综述了认知无线电网络在频谱感知、能效和安全威胁方面的最新进展
2015 International Conference on Microwave, Optical and Communication Engineering (ICMOCE) Pub Date : 2015-12-01 DOI: 10.1109/ICMOCE.2015.7489704
Girraj Sharma, Ritu Sharma
{"title":"A review on recent advances in spectrum sensing, energy efficiency and security threats in cognitive radio network","authors":"Girraj Sharma, Ritu Sharma","doi":"10.1109/ICMOCE.2015.7489704","DOIUrl":"https://doi.org/10.1109/ICMOCE.2015.7489704","url":null,"abstract":"In the last decade there is a vast development in the wireless communication and new wireless devices so the demand of the radio spectrum is increasing, There is a need of efficient spectrum utilization because due to fixed assignment policy a huge portion of licensed spectrum is underutilized. To exploit the radio spectrum in a more intelligent and flexible way, regulatory bodies are reviewing their policies by adopting innovative communication technology. Cognitive Radio is a revolutionary technology which enables access to underutilized spectrum efficiently and dynamically without causing interference to the licensed users. In the last few years there has been significant development in cognitive radio technology. This paper reviews recent development and advances in three key areas of cognitive radio network - spectrum sensing, security and energy efficiency. In this paper the fundamentals of cognitive radio is first discussed and than existing work is reviewed.","PeriodicalId":352568,"journal":{"name":"2015 International Conference on Microwave, Optical and Communication Engineering (ICMOCE)","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127286772","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
Dual-linearly polarized dielectric resonator antenna array for L and S band applications L和S波段应用的双线极化介质谐振器天线阵列
2015 International Conference on Microwave, Optical and Communication Engineering (ICMOCE) Pub Date : 2015-12-01 DOI: 10.1109/ICMOCE.2015.7489679
Ayaskanta Panigrahi, S. Behera
{"title":"Dual-linearly polarized dielectric resonator antenna array for L and S band applications","authors":"Ayaskanta Panigrahi, S. Behera","doi":"10.1109/ICMOCE.2015.7489679","DOIUrl":"https://doi.org/10.1109/ICMOCE.2015.7489679","url":null,"abstract":"In this paper, a 2×2 cylindrical dielectric resonator antenna (DRA) array, where each element is excited by a slot orthogonally placed to a strip fed probe is presented. The proposed design is showing dual linear polarization with high isolation exceeding 36 dB in L-band and 40 dB in S-band operations respectively. The HEM111 and HEM113 modes have been considered to generate dual mode in cylindrical DRA to yield broadside radiation pattern. To reduce the merging of two DRA modes because of strip fed excitation the DRA radius is slightly increased from calculated value. The co-polarization level in both planes is found to be nearly 35 dB higher than the cross-polarization in bore-sight direction. The proposed 2×2 cylindrical dielectric resonator antenna (DRA) array has been achieved -10 dB impedance bandwidth of 21% for 1.16 to 1.43 GHz (in L-Band) and 4.54% for 3.35 to 3.2 GHz(in S-Band) respectively. The radiation patterns with nearly same pattern shapes are found to be stable with the realized gains of 9.6 dB and 10.7 dB for resonant frequencies of 1.28 GHz and 3.3 GHz respectively.","PeriodicalId":352568,"journal":{"name":"2015 International Conference on Microwave, Optical and Communication Engineering (ICMOCE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130598033","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
Capacity estimation of a comapct pattern diversity MIMO antenna 紧凑型模式分集MIMO天线的容量估计
2015 International Conference on Microwave, Optical and Communication Engineering (ICMOCE) Pub Date : 2015-12-01 DOI: 10.1109/ICMOCE.2015.7489682
Dr. Jagannath Malik, A. Patnaik, M. V. Kartikeyan
{"title":"Capacity estimation of a comapct pattern diversity MIMO antenna","authors":"Dr. Jagannath Malik, A. Patnaik, M. V. Kartikeyan","doi":"10.1109/ICMOCE.2015.7489682","DOIUrl":"https://doi.org/10.1109/ICMOCE.2015.7489682","url":null,"abstract":"Theoretical channel capacity estimation of a compact multiple-input-multiple-output (MIMO) antenna has been presented. The proposed MIMO antenna possesses excellent pattern diversity due to the orthogonal radiation maxima between the two radiators. Theoretical capacity of the proposed MIMO antenna in a Rayleigh fading channel has been calculated in MATLAB from practical scattering parameter measurements of the fabricated antenna.","PeriodicalId":352568,"journal":{"name":"2015 International Conference on Microwave, Optical and Communication Engineering (ICMOCE)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130397227","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
Distributed estimation using multi-hop adaptive diffusion in sparse wireless sensor networks 稀疏无线传感器网络中基于多跳自适应扩散的分布式估计
2015 International Conference on Microwave, Optical and Communication Engineering (ICMOCE) Pub Date : 2015-12-01 DOI: 10.1109/ICMOCE.2015.7489756
M.Venkatesh Nayak, T. Panigrahi, Renu Sharma
{"title":"Distributed estimation using multi-hop adaptive diffusion in sparse wireless sensor networks","authors":"M.Venkatesh Nayak, T. Panigrahi, Renu Sharma","doi":"10.1109/ICMOCE.2015.7489756","DOIUrl":"https://doi.org/10.1109/ICMOCE.2015.7489756","url":null,"abstract":"The diffusion cooperative scheme is conventionally used in wireless sensor networks for distributed parameter estimation. Each sensor node has the local computing ability and share information with the predefined one hop neighbors for local diffusion. The performance of the diffusion method depends on the degree of the sensor nodes and which is less for a sparse sensor network, especially for the sensor nodes lying on the edge of the network. Therefore, multi-hop diffusion cooperation is proposed here to improve the estimation accuracy and convergent speed. Here, a sensor node receives information from multi-hop (used two-hop) sensor nodes unlike aggregating from immediate neighbors in the conventional diffusion algorithm. The simulation results show the performance improvement of the proposed scheme over the existing diffusion method.","PeriodicalId":352568,"journal":{"name":"2015 International Conference on Microwave, Optical and Communication Engineering (ICMOCE)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121321750","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: 6
Breakdown: A review of practical factors affecting the acquisition of bio-signals 分项:对影响生物信号获取的实际因素进行综述
2015 International Conference on Microwave, Optical and Communication Engineering (ICMOCE) Pub Date : 2015-12-01 DOI: 10.1109/ICMOCE.2015.7489708
S. Kartthik Srinivas, M. Jagannath, K. Adalarasu
{"title":"Breakdown: A review of practical factors affecting the acquisition of bio-signals","authors":"S. Kartthik Srinivas, M. Jagannath, K. Adalarasu","doi":"10.1109/ICMOCE.2015.7489708","DOIUrl":"https://doi.org/10.1109/ICMOCE.2015.7489708","url":null,"abstract":"Bio-signal acquisition is a process that involves congregation of bio-signals that are very helpful in detecting a variety of ailments like epilepsy, sleep disorders, cardiac arrhythmia, best's disease, muscular and nervous-system disorders, dominant cystoids macular dystrophy, brain death and coma. Bio-signals can also be used for tracking the human kinesiology and also in enhancing human machine interaction. Bio-signal acquisition has a long history of use in healthcare and research, but there are certain practical factors that can affect the bio-signal acquisition. This work discusses about the practical factors affecting bio-signal acquisition and also proposes some of the possible engineering solutions to overcome these factors.","PeriodicalId":352568,"journal":{"name":"2015 International Conference on Microwave, Optical and Communication Engineering (ICMOCE)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116127491","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
Alternate FRFT structure in inline module in DWDM fiber optic communication system DWDM光纤通信系统中内联模块中FRFT交替结构
2015 International Conference on Microwave, Optical and Communication Engineering (ICMOCE) Pub Date : 2015-12-01 DOI: 10.1109/ICMOCE.2015.7489685
S. Sharath Chandra, P. Sahu
{"title":"Alternate FRFT structure in inline module in DWDM fiber optic communication system","authors":"S. Sharath Chandra, P. Sahu","doi":"10.1109/ICMOCE.2015.7489685","DOIUrl":"https://doi.org/10.1109/ICMOCE.2015.7489685","url":null,"abstract":"Dense Wavelength-Division Multiplexing (DWDM) fiber optic communication system consists of multiple channels, each having a light carrier signal placed at distinct wavelengths. A DWDM system is designed to maximize the datarate-transmission length product. Bandwidth or the datarate of the system is incremented by accommodating more number of channels to be multiplexed by reducing the spacing between the channels. The resulting narrow spacing between carrier wavelengths introduces linear and nonlinear distortions in the communication channel. An inline module is implemented in the optical domain to mitigate the linear and nonlinear distortions considered together. The module design is based on the Fractional Fourier Transform (FRFT). The application of FRFT on the optical signal causes it to transform into an intermediary domain in which the effects of both linear and non-linear distortions combine together. We propose an alternate structure for the FRFT implementation. The proposed structure should retain the original profile of the optical signal after the transformation. The module is tested for the modulation technique of CS-RZ. The results show enhanced performance parameters for the channel with the inline module.","PeriodicalId":352568,"journal":{"name":"2015 International Conference on Microwave, Optical and Communication Engineering (ICMOCE)","volume":"159 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115950847","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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