Pub Date : 2014-10-16DOI: 10.1109/WOCN.2014.6923095
Chandan Pradhan, K. Sankhe, Sumit Kumar, G. R. Murthy
This paper proposes the architecture of a cognitive base station for 4G cellular communication networks. We have developed a novel priority driven spectrum handoff technique for Multi-User MIMO communication, where the base station creates beams for establishing communication links. Adaptive beamforming methods along with DoA have been used to dynamically create a beam toward the intended receiver as well as track the users and steer the beam when users are mobile. The work is followed by related simulations which shows 5.4 dB gain over the traditional cellular architecture with respect to CCI. Our proposed algorithms lead to significant increase in overall capacity of the network. It also promises higher spectrum efficiency compared to the traditional cellular architecture.
{"title":"Cognitive base station design for efficient spectrum utilization in cellular network","authors":"Chandan Pradhan, K. Sankhe, Sumit Kumar, G. R. Murthy","doi":"10.1109/WOCN.2014.6923095","DOIUrl":"https://doi.org/10.1109/WOCN.2014.6923095","url":null,"abstract":"This paper proposes the architecture of a cognitive base station for 4G cellular communication networks. We have developed a novel priority driven spectrum handoff technique for Multi-User MIMO communication, where the base station creates beams for establishing communication links. Adaptive beamforming methods along with DoA have been used to dynamically create a beam toward the intended receiver as well as track the users and steer the beam when users are mobile. The work is followed by related simulations which shows 5.4 dB gain over the traditional cellular architecture with respect to CCI. Our proposed algorithms lead to significant increase in overall capacity of the network. It also promises higher spectrum efficiency compared to the traditional cellular architecture.","PeriodicalId":149158,"journal":{"name":"2014 Eleventh International Conference on Wireless and Optical Communications Networks (WOCN)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120819986","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}
Pub Date : 2014-10-16DOI: 10.1109/WOCN.2014.6923065
V. Abrol, Pulkit Sharma
This paper gives the insights of energy efficiency of sector coded transmission (SCT) protocol for cognitive radio networks. SCT is a cluster head rotation based protocol used for cooperative spectrum sensing in cognitive radio networks. A modified transmission and reception radio model based on SCT is proposed for cognitive radio networks. Further the paper evaluates the effect of number of users, sectors and hierarchy levels on energy efficiency in SCT protocol. The frame structure for sending secondary users spectrum sensing decision data is also proposed in this work.
{"title":"Radio model for sector coded transmission protocol","authors":"V. Abrol, Pulkit Sharma","doi":"10.1109/WOCN.2014.6923065","DOIUrl":"https://doi.org/10.1109/WOCN.2014.6923065","url":null,"abstract":"This paper gives the insights of energy efficiency of sector coded transmission (SCT) protocol for cognitive radio networks. SCT is a cluster head rotation based protocol used for cooperative spectrum sensing in cognitive radio networks. A modified transmission and reception radio model based on SCT is proposed for cognitive radio networks. Further the paper evaluates the effect of number of users, sectors and hierarchy levels on energy efficiency in SCT protocol. The frame structure for sending secondary users spectrum sensing decision data is also proposed in this work.","PeriodicalId":149158,"journal":{"name":"2014 Eleventh International Conference on Wireless and Optical Communications Networks (WOCN)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117023054","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}
Pub Date : 2014-10-16DOI: 10.1109/WOCN.2014.6923075
Pushpanjali Singh, Meeti Dehran, I. Singh, R. Singh
This paper presents a new realization of transadmittance mode universal filter having three inputs and single output. The circuit employs two current differencing transconductance amplifier (CDTA), two capacitors and two resistors. One of the CDTA has multiple outputs hence, called MOCDTA. The configuration can realizes low pass (LP), high pass (HP), band pass (BP), and notch filter using CMOS based CDTA which greatly reduces the space requirement and power consumption. The circuit offers the advantages of having low input impedance and high output impedance. Both the active and passive sensitivities are low. The natural angular frequency (ω0) and quality factor (Q) of proposed filter can be electronically controlled. PSPICE simulation results are included to verify the theoretical analysis.
{"title":"Universal transadmittance filter using CMOS MOCDTA","authors":"Pushpanjali Singh, Meeti Dehran, I. Singh, R. Singh","doi":"10.1109/WOCN.2014.6923075","DOIUrl":"https://doi.org/10.1109/WOCN.2014.6923075","url":null,"abstract":"This paper presents a new realization of transadmittance mode universal filter having three inputs and single output. The circuit employs two current differencing transconductance amplifier (CDTA), two capacitors and two resistors. One of the CDTA has multiple outputs hence, called MOCDTA. The configuration can realizes low pass (LP), high pass (HP), band pass (BP), and notch filter using CMOS based CDTA which greatly reduces the space requirement and power consumption. The circuit offers the advantages of having low input impedance and high output impedance. Both the active and passive sensitivities are low. The natural angular frequency (ω0) and quality factor (Q) of proposed filter can be electronically controlled. PSPICE simulation results are included to verify the theoretical analysis.","PeriodicalId":149158,"journal":{"name":"2014 Eleventh International Conference on Wireless and Optical Communications Networks (WOCN)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130429230","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}
Pub Date : 2014-10-16DOI: 10.1109/WOCN.2014.6923053
V. Deshpande, Dattatray S. Waghole
The set of different sensor nodes randomly deployed in sensor area to capture the environmental changes. Sensor nodes are working with specific routing and MAC Protocols in the network. Performance of the network is depends upon the network traffic and congestion in the network. Throughput, latency, loss ratio, delivery ratio, energy consumption, reliability are the QoS of the sensor network that has to considered for performance of WSN. In this paper performance of the different MAC protocols like CSMA, TDMA, 802.15.4 and FMAC for different node density is included. Effect of traffic and congestion on performance of the network is also tested. Behavior of different MAC for heavy traffic load and congestion is checked. Results are taken using NS2 simulation tool for various QoS in WSN.
{"title":"Performance analysis of FMAC in wireless sensor networks","authors":"V. Deshpande, Dattatray S. Waghole","doi":"10.1109/WOCN.2014.6923053","DOIUrl":"https://doi.org/10.1109/WOCN.2014.6923053","url":null,"abstract":"The set of different sensor nodes randomly deployed in sensor area to capture the environmental changes. Sensor nodes are working with specific routing and MAC Protocols in the network. Performance of the network is depends upon the network traffic and congestion in the network. Throughput, latency, loss ratio, delivery ratio, energy consumption, reliability are the QoS of the sensor network that has to considered for performance of WSN. In this paper performance of the different MAC protocols like CSMA, TDMA, 802.15.4 and FMAC for different node density is included. Effect of traffic and congestion on performance of the network is also tested. Behavior of different MAC for heavy traffic load and congestion is checked. Results are taken using NS2 simulation tool for various QoS in WSN.","PeriodicalId":149158,"journal":{"name":"2014 Eleventh International Conference on Wireless and Optical Communications Networks (WOCN)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125720953","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}
Pub Date : 2014-10-16DOI: 10.1109/WOCN.2014.6923076
H. N. Patil, S. N. Ohatkar
Software Defined Radio (SDR) has been one of the new techniques developed to change the way the traditional wireless communication systems work. SDRs enable us to build reconfigurable and interoperable radios that can be upgraded for future technologies. Designing a multi-modulation schemes system in term of hardware will cost a lot and definitely consume power and increase the interference. This paper presents the design of baseband processing section of Software Defined Radio, using MATLAB® SIMULINK® tool incorporated with Xilinx System Generator, using QPSK. The simulated results of designed SDR system are verified through hardware co simulated results. The same model is then in its Verilog form synthesized in Xilinx ISE Design suite.
软件定义无线电(SDR)是一种改变传统无线通信系统工作方式的新技术。sdr使我们能够构建可重构和可互操作的无线电，这些无线电可以升级以适应未来的技术。从硬件上设计一个多调制方案系统，不仅成本高，而且肯定会消耗功率，增加干扰。本文介绍了软件无线电基带处理部分的设计，采用MATLAB®SIMULINK®工具结合Xilinx System Generator，采用QPSK。通过硬件仿真结果验证了所设计SDR系统的仿真结果。然后在赛灵思ISE设计套件中以Verilog形式合成相同的模型。
{"title":"Design and simulation of Software Defined Radio using MATLAB® SIMULINK®","authors":"H. N. Patil, S. N. Ohatkar","doi":"10.1109/WOCN.2014.6923076","DOIUrl":"https://doi.org/10.1109/WOCN.2014.6923076","url":null,"abstract":"Software Defined Radio (SDR) has been one of the new techniques developed to change the way the traditional wireless communication systems work. SDRs enable us to build reconfigurable and interoperable radios that can be upgraded for future technologies. Designing a multi-modulation schemes system in term of hardware will cost a lot and definitely consume power and increase the interference. This paper presents the design of baseband processing section of Software Defined Radio, using MATLAB® SIMULINK® tool incorporated with Xilinx System Generator, using QPSK. The simulated results of designed SDR system are verified through hardware co simulated results. The same model is then in its Verilog form synthesized in Xilinx ISE Design suite.","PeriodicalId":149158,"journal":{"name":"2014 Eleventh International Conference on Wireless and Optical Communications Networks (WOCN)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126358744","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}
Pub Date : 2014-10-16DOI: 10.1109/WOCN.2014.6923059
B. C. Reddy, E. S. Shajahan, M. S. Bhat
A novel triple-band notched circular ultrawideband (UWB) antenna with a band rejection characteristics at WiMAX, WLAN and C-band is presented. A design involving two concentric G-shaped circular slots etched on the circular patch structure and a U-shaped slot on the CPW transmission line is used to reject and control the notched frequency bands. The proposed antenna has good UWB characteristics from 3-12 GHz with VSWR <; 2, except frequency bands of 3.3-3.6 GHz, 3.7-4.2 GHz, and 5.1-5.9 GHz. The designed structure exhibits good radiation characteristics over the desired band and is a good candidate for UWB applications.
{"title":"Design of a triple band-notched circular monopole antenna for UWB applications","authors":"B. C. Reddy, E. S. Shajahan, M. S. Bhat","doi":"10.1109/WOCN.2014.6923059","DOIUrl":"https://doi.org/10.1109/WOCN.2014.6923059","url":null,"abstract":"A novel triple-band notched circular ultrawideband (UWB) antenna with a band rejection characteristics at WiMAX, WLAN and C-band is presented. A design involving two concentric G-shaped circular slots etched on the circular patch structure and a U-shaped slot on the CPW transmission line is used to reject and control the notched frequency bands. The proposed antenna has good UWB characteristics from 3-12 GHz with VSWR <; 2, except frequency bands of 3.3-3.6 GHz, 3.7-4.2 GHz, and 5.1-5.9 GHz. The designed structure exhibits good radiation characteristics over the desired band and is a good candidate for UWB applications.","PeriodicalId":149158,"journal":{"name":"2014 Eleventh International Conference on Wireless and Optical Communications Networks (WOCN)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123812704","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}
Pub Date : 2014-10-16DOI: 10.1109/WOCN.2014.6923066
S. Sarathkrishna, K. Balamurugan, M. N. Devi, M. Jayakumar
GaN based devices are in great demand due to its rugged characteristics at extreme conditions. In this paper, design of GaN monolithic microwave integrated circuit (MMIC) low noise amplifier (LNA) with coplanar waveguide matching is presented to understand the key aspects of high gain, low noise figure and high linearity. The LNA can be used in base station technologies as frequency of interest is from 0.6-3 GHz. It delivers gain of 23 dB and noise figure 0.3 dB and OIP3 upto 51 dBm. The linear performance presented here enables reconfigurable designs of LNA over multiple octaves of bandwidth.
{"title":"Design and analysis of GaN HEMT based LNA with CPW matching","authors":"S. Sarathkrishna, K. Balamurugan, M. N. Devi, M. Jayakumar","doi":"10.1109/WOCN.2014.6923066","DOIUrl":"https://doi.org/10.1109/WOCN.2014.6923066","url":null,"abstract":"GaN based devices are in great demand due to its rugged characteristics at extreme conditions. In this paper, design of GaN monolithic microwave integrated circuit (MMIC) low noise amplifier (LNA) with coplanar waveguide matching is presented to understand the key aspects of high gain, low noise figure and high linearity. The LNA can be used in base station technologies as frequency of interest is from 0.6-3 GHz. It delivers gain of 23 dB and noise figure 0.3 dB and OIP3 upto 51 dBm. The linear performance presented here enables reconfigurable designs of LNA over multiple octaves of bandwidth.","PeriodicalId":149158,"journal":{"name":"2014 Eleventh International Conference on Wireless and Optical Communications Networks (WOCN)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121190655","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}
Pub Date : 2014-10-16DOI: 10.1109/WOCN.2014.6923052
Mohamed Abdelaal, Oliver E. Theel
Energy consumption remains the dominant limitation in most sensor networks. An outsized and growing body of literature has investigated the energy-efficiency problem. In general, energy is afforded either through preserving the already allocated energy sources such as batteries or super-capacitors; or through harvesting energy from the environment; or by utilizing both approaches. In this paper, we highlight the recent research efforts for saving the allocated energy. A unique taxonomy of energy-saving techniques dedicated to sensor networks is provided. Therefore, this paper represents an excellent source for new researchers in this field. Moreover, we present our recent developed approaches within the same context including exploiting the concepts of virtual detection and Fuzzy transform for optimizing the power consumed by sensing and radio communication units, respectively.
{"title":"Recent energy-preservation endeavours for longlife wireless sensor networks: A concise survey","authors":"Mohamed Abdelaal, Oliver E. Theel","doi":"10.1109/WOCN.2014.6923052","DOIUrl":"https://doi.org/10.1109/WOCN.2014.6923052","url":null,"abstract":"Energy consumption remains the dominant limitation in most sensor networks. An outsized and growing body of literature has investigated the energy-efficiency problem. In general, energy is afforded either through preserving the already allocated energy sources such as batteries or super-capacitors; or through harvesting energy from the environment; or by utilizing both approaches. In this paper, we highlight the recent research efforts for saving the allocated energy. A unique taxonomy of energy-saving techniques dedicated to sensor networks is provided. Therefore, this paper represents an excellent source for new researchers in this field. Moreover, we present our recent developed approaches within the same context including exploiting the concepts of virtual detection and Fuzzy transform for optimizing the power consumed by sensing and radio communication units, respectively.","PeriodicalId":149158,"journal":{"name":"2014 Eleventh International Conference on Wireless and Optical Communications Networks (WOCN)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133403737","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}
Pub Date : 2014-10-16DOI: 10.1109/WOCN.2014.6923074
S. Jadhav, A. Kulkarni, Radhika Menon
Information technology plays an important role in facilitating disaster management and allowing planners for a more efficient disaster handling. Climate change can reasonably be expected to increase countries' vulnerability to natural hazards in future. We are already witnesses of extreme meteorological phenomena, such as expanded fires and floods. This paper gives Mobile Ad-Hoc Network (MANET) along with Dynamic Source Routing protocol (DSR). Simulation results for performance measurement of DSR algorithm for normal condition are given first. Same parameters are measured after applying disaster condition on nodes is presented in next section. In last section simulation results of disaster prevention condition are given. It is observed that performance of the network after application of prevention condition is nearly same as the normal performance. The performance is evaluated in terms of Network Throughput, Packet Delivery Ratio, and Average end to end delay.
{"title":"Mobile Ad-Hoc Network (MANET) for disaster management","authors":"S. Jadhav, A. Kulkarni, Radhika Menon","doi":"10.1109/WOCN.2014.6923074","DOIUrl":"https://doi.org/10.1109/WOCN.2014.6923074","url":null,"abstract":"Information technology plays an important role in facilitating disaster management and allowing planners for a more efficient disaster handling. Climate change can reasonably be expected to increase countries' vulnerability to natural hazards in future. We are already witnesses of extreme meteorological phenomena, such as expanded fires and floods. This paper gives Mobile Ad-Hoc Network (MANET) along with Dynamic Source Routing protocol (DSR). Simulation results for performance measurement of DSR algorithm for normal condition are given first. Same parameters are measured after applying disaster condition on nodes is presented in next section. In last section simulation results of disaster prevention condition are given. It is observed that performance of the network after application of prevention condition is nearly same as the normal performance. The performance is evaluated in terms of Network Throughput, Packet Delivery Ratio, and Average end to end delay.","PeriodicalId":149158,"journal":{"name":"2014 Eleventh International Conference on Wireless and Optical Communications Networks (WOCN)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134112717","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}
Pub Date : 2014-10-16DOI: 10.1109/WOCN.2014.6923096
Rahul Bajpai, A. Trivedi
Cooperative cognitive radio network (CCRN) has gained much attention in the literature of wireless communication. In CCRN, cooperative relaying stimulates primary user (PU) to lease more spectrum to secondary users (SUs). This paper proposes a two stage joint power and spectrum allocation scheme for a CCRN. In the proposed scheme, PU leases unused licensed spectrum to multiple SUs using the frequency division multiple access (FDMA) technique. Here, we have considered that the end users (primary and secondary receivers) can move randomly in any direction. In the first stage, a pricing based dynamic spectrum leasing (DSL) has been used for PU to lease its unused frequency band to the SUs to maximize the revenue. Equal power has been allocated to the PU and all SUs in this stage. In the second stage, a relay assisted DSL scheme has been proposed to induce the PU to lease extra bandwidth to satisfy the increased quality of service (QoS) demands of the SUs, on the condition that QoS of the PU is satisfied. In this stage, power has been allocated to maximize the rate gain of PU and all the SUs. Numerical results have been used to verify the validation of the proposed methodology.
{"title":"Joint power and spectrum allocation for cooperative cognitive radio network with end user mobility","authors":"Rahul Bajpai, A. Trivedi","doi":"10.1109/WOCN.2014.6923096","DOIUrl":"https://doi.org/10.1109/WOCN.2014.6923096","url":null,"abstract":"Cooperative cognitive radio network (CCRN) has gained much attention in the literature of wireless communication. In CCRN, cooperative relaying stimulates primary user (PU) to lease more spectrum to secondary users (SUs). This paper proposes a two stage joint power and spectrum allocation scheme for a CCRN. In the proposed scheme, PU leases unused licensed spectrum to multiple SUs using the frequency division multiple access (FDMA) technique. Here, we have considered that the end users (primary and secondary receivers) can move randomly in any direction. In the first stage, a pricing based dynamic spectrum leasing (DSL) has been used for PU to lease its unused frequency band to the SUs to maximize the revenue. Equal power has been allocated to the PU and all SUs in this stage. In the second stage, a relay assisted DSL scheme has been proposed to induce the PU to lease extra bandwidth to satisfy the increased quality of service (QoS) demands of the SUs, on the condition that QoS of the PU is satisfied. In this stage, power has been allocated to maximize the rate gain of PU and all the SUs. Numerical results have been used to verify the validation of the proposed methodology.","PeriodicalId":149158,"journal":{"name":"2014 Eleventh International Conference on Wireless and Optical Communications Networks (WOCN)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124026168","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}
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