Pub Date : 2019-12-01DOI: 10.1109/WSCE49000.2019.9040920
Yue Qin, Feng Liu
In this work, we extend the capability of convolutional neural network (CNN) to polar code decoding. Previous work has shown that a multi-layer perceptron (MLP), which is a basic form of deep neural network (DNN), can achieve high decoding accuracy and speed for polar code when the block length is very short. However, its performance drops drastically for longer codes, due to the bulky network structure. In this work, we design and implement a CNN for polar decoding. In order to improve the decoding accuracy, we introduce auxiliary labels into CNN output based on the encoding structure of polar code. In addition, we propose to prune the CNN to preserve the decoding accuracy of wider network while reducing the computation and the parameters. With these two innovations, the decoding accuracy of original CNN can be improved. We carry out extensive simulations to compare our designed CNN decoder with MLP decoder. Results show that when the code length is 64, our model is 60 times smaller than the MLP decoder, and the accuracy of our model increases with model size, while MLP reaches saturation. Additional results show that our proposed method outperforms original CNN with regard to the BER performance under marginal parameter increase.
{"title":"Convolutional Neural Network-Based Polar Decoding","authors":"Yue Qin, Feng Liu","doi":"10.1109/WSCE49000.2019.9040920","DOIUrl":"https://doi.org/10.1109/WSCE49000.2019.9040920","url":null,"abstract":"In this work, we extend the capability of convolutional neural network (CNN) to polar code decoding. Previous work has shown that a multi-layer perceptron (MLP), which is a basic form of deep neural network (DNN), can achieve high decoding accuracy and speed for polar code when the block length is very short. However, its performance drops drastically for longer codes, due to the bulky network structure. In this work, we design and implement a CNN for polar decoding. In order to improve the decoding accuracy, we introduce auxiliary labels into CNN output based on the encoding structure of polar code. In addition, we propose to prune the CNN to preserve the decoding accuracy of wider network while reducing the computation and the parameters. With these two innovations, the decoding accuracy of original CNN can be improved. We carry out extensive simulations to compare our designed CNN decoder with MLP decoder. Results show that when the code length is 64, our model is 60 times smaller than the MLP decoder, and the accuracy of our model increases with model size, while MLP reaches saturation. Additional results show that our proposed method outperforms original CNN with regard to the BER performance under marginal parameter increase.","PeriodicalId":153298,"journal":{"name":"2019 2nd World Symposium on Communication Engineering (WSCE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128114270","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 : 2019-12-01DOI: 10.1109/WSCE49000.2019.9041055
Kristine Joyce P. Ortiz, Mark Nethaniel T. Calicdan, Romel P. Oña, Ronnier Franz H. Torres
With the rapid increase of the development of the national economy, automobiles have increased greatly as a necessity. Investing in a vehicle perhaps is one of the largest investments of a person. Almost 84% of car owners in the National Capital Region experience car theft according to the PNP Highway Patrol Group. This paper presents the process of improving the existing anti-theft technology that is being implemented in an automobile car. Existing technology this day for anti-theft system lack some features for tracking and stopping the vehicle efficiently and vehicles can be engaged easily by a method used by the thieves called hot wiring. The objective of the study was to design a prototype that has the capability to stop the engine of the car once the thief runs it and the car reaches full stop. The system was controlled by the Arduino that was first programmed so even if the user was awake or asleep it performed the security measures. A relay was installed in the ignition of the car for prevention of the hotwiring method. A tracking device was used to inform the user and to the authorities telling the exact location of the car from the start location to the last where the car stops through latitude and longitude coordinates. For thief identification, images were captured by the camera. The camera started capturing once the car ran and until the user retrieved the car. Alarm was also connected to the Arduino that was sounded continuously once the car runs. Another sensor was used in order to read the speed of the automobile. Tests were conducted for the effectivity and reliability of the system. From the tracking, image capturing, and relay response, all tests resulted in 100% reliability. The system responded correctly based on different testing conducted. The results showed that the system was working properly and in safe condition.
{"title":"GSM-Based Automobile Ignition Stopping and GPS Tracking with Thief Image Capturing","authors":"Kristine Joyce P. Ortiz, Mark Nethaniel T. Calicdan, Romel P. Oña, Ronnier Franz H. Torres","doi":"10.1109/WSCE49000.2019.9041055","DOIUrl":"https://doi.org/10.1109/WSCE49000.2019.9041055","url":null,"abstract":"With the rapid increase of the development of the national economy, automobiles have increased greatly as a necessity. Investing in a vehicle perhaps is one of the largest investments of a person. Almost 84% of car owners in the National Capital Region experience car theft according to the PNP Highway Patrol Group. This paper presents the process of improving the existing anti-theft technology that is being implemented in an automobile car. Existing technology this day for anti-theft system lack some features for tracking and stopping the vehicle efficiently and vehicles can be engaged easily by a method used by the thieves called hot wiring. The objective of the study was to design a prototype that has the capability to stop the engine of the car once the thief runs it and the car reaches full stop. The system was controlled by the Arduino that was first programmed so even if the user was awake or asleep it performed the security measures. A relay was installed in the ignition of the car for prevention of the hotwiring method. A tracking device was used to inform the user and to the authorities telling the exact location of the car from the start location to the last where the car stops through latitude and longitude coordinates. For thief identification, images were captured by the camera. The camera started capturing once the car ran and until the user retrieved the car. Alarm was also connected to the Arduino that was sounded continuously once the car runs. Another sensor was used in order to read the speed of the automobile. Tests were conducted for the effectivity and reliability of the system. From the tracking, image capturing, and relay response, all tests resulted in 100% reliability. The system responded correctly based on different testing conducted. The results showed that the system was working properly and in safe condition.","PeriodicalId":153298,"journal":{"name":"2019 2nd World Symposium on Communication Engineering (WSCE)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133673495","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 : 2019-12-01DOI: 10.1109/WSCE49000.2019.9040982
Hossam O. Ahmed
The protection of sensitive facilities or international borders using Wireless Sensor Networks (WSN) has become one of the important topics nowadays. One of the efficient techniques which could guarantee a high precision capabilities of event detection is to depend on Fuzzy Logic System (FLS) as the Artificial Intelligence(AI)-based processing algorithm, in addition to use the Field Programmable Logic Array (FPGA) as the hardware platform due to its reconfigurability and high-speed processing power that it could provide. In this paper, we designed a systolic-based FLS architecture using VHDL based on the validated MATLAB model. The proposed systolic FLS architecture has been designed to be interfaced with a TFmini Plus Lidar Sensor Lidar sensor and a MaxSonar ultrasonic sensor using the Intel Altera OpenVINO FPGA kit. The proposed systolic FLS processing core achieved a processing computational speed of 3.085 GOPS at maximum operating frequency of 181.55 MHz, while draining only 29.09 mW as a core dynamic thermal power dissipation loss and only about 12.98 mW as a I/O thermal power dissipation loss.
{"title":"Systolic Lidar-based Fuzzy Logic System for border Monitoring using FPGA","authors":"Hossam O. Ahmed","doi":"10.1109/WSCE49000.2019.9040982","DOIUrl":"https://doi.org/10.1109/WSCE49000.2019.9040982","url":null,"abstract":"The protection of sensitive facilities or international borders using Wireless Sensor Networks (WSN) has become one of the important topics nowadays. One of the efficient techniques which could guarantee a high precision capabilities of event detection is to depend on Fuzzy Logic System (FLS) as the Artificial Intelligence(AI)-based processing algorithm, in addition to use the Field Programmable Logic Array (FPGA) as the hardware platform due to its reconfigurability and high-speed processing power that it could provide. In this paper, we designed a systolic-based FLS architecture using VHDL based on the validated MATLAB model. The proposed systolic FLS architecture has been designed to be interfaced with a TFmini Plus Lidar Sensor Lidar sensor and a MaxSonar ultrasonic sensor using the Intel Altera OpenVINO FPGA kit. The proposed systolic FLS processing core achieved a processing computational speed of 3.085 GOPS at maximum operating frequency of 181.55 MHz, while draining only 29.09 mW as a core dynamic thermal power dissipation loss and only about 12.98 mW as a I/O thermal power dissipation loss.","PeriodicalId":153298,"journal":{"name":"2019 2nd World Symposium on Communication Engineering (WSCE)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116525256","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 : 2019-12-01DOI: 10.1109/WSCE49000.2019.9041006
Worawut Kulapong, Surapong Siripongdee, W. Jaikla
This paper introduces an electronically controllable voltage mode analog biquad filter which is designed based on the series resistor-inductor-capacitor (RLC) topology. The proposed second order filter employs one active device, voltage differencing differential difference amplifier (VDDDA) and three passive elements (one resistor and two grounded capacitors). The natural frequency $(omega_{0})$ is controlled electronically as well as quality factor (Q) by changing the bias current. Two filter responses, lowpass (LP) and bandpass (BP) functions with unity voltage gain are simultaneously achieved. The proposed voltage-mode biquad filter consists of two input voltage nodes with high impedance. These input voltages are employed to select the inverting or non-inverting filter response. The sinusoidal oscillator is realized by slight modification of the proposed voltage-mode biquad filter. The sinusoidal voltage output node is low impedance. With this configuration, the proposed sinusoidal oscillator can be connected to other circuits without requirement of the additional buffer devices. The proposed filter and sinusoidal oscillator employ a few in number of the passive and active devices (also with grounded capacitors). The proposed circuits are interesting for monolithic integrated circuit (IC) realization. Pspice simulation program and TSMC 0. 18m CMOS process parameters with ± 0.9V are employed to verify the functionality of the presented biquad filter and sinusoidal generator.
{"title":"Design of Second Order Lowpass and Bandpass Filter Using Single VDDDA and Its Modification as Sinusoidal Oscillator","authors":"Worawut Kulapong, Surapong Siripongdee, W. Jaikla","doi":"10.1109/WSCE49000.2019.9041006","DOIUrl":"https://doi.org/10.1109/WSCE49000.2019.9041006","url":null,"abstract":"This paper introduces an electronically controllable voltage mode analog biquad filter which is designed based on the series resistor-inductor-capacitor (RLC) topology. The proposed second order filter employs one active device, voltage differencing differential difference amplifier (VDDDA) and three passive elements (one resistor and two grounded capacitors). The natural frequency $(omega_{0})$ is controlled electronically as well as quality factor (Q) by changing the bias current. Two filter responses, lowpass (LP) and bandpass (BP) functions with unity voltage gain are simultaneously achieved. The proposed voltage-mode biquad filter consists of two input voltage nodes with high impedance. These input voltages are employed to select the inverting or non-inverting filter response. The sinusoidal oscillator is realized by slight modification of the proposed voltage-mode biquad filter. The sinusoidal voltage output node is low impedance. With this configuration, the proposed sinusoidal oscillator can be connected to other circuits without requirement of the additional buffer devices. The proposed filter and sinusoidal oscillator employ a few in number of the passive and active devices (also with grounded capacitors). The proposed circuits are interesting for monolithic integrated circuit (IC) realization. Pspice simulation program and TSMC 0. 18m CMOS process parameters with ± 0.9V are employed to verify the functionality of the presented biquad filter and sinusoidal generator.","PeriodicalId":153298,"journal":{"name":"2019 2nd World Symposium on Communication Engineering (WSCE)","volume":"149 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133317704","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 : 2019-12-01DOI: 10.1109/WSCE49000.2019.9041071
M. Fujii
Bayesian optimization is applied to antenna subset selection and transmit phase adjustment in distributed microwave power transfer. Both of the optimization controls are iteratively carried out based on energy feedback to maximize the received power in the low-complexity hardware configuration of massive antenna deployment. In addition, the computational complexity is reduced by exploiting the cyclic property of received power with respect to the transmit phase rotation. Our simulation results demonstrate that 95 percent of the maximum achievable received signal power was attained in 97 percent of the total trials by using 34 samples in both controls.
{"title":"Distributed Wireless Power Transfer Based on Bayesian-Optimized Control","authors":"M. Fujii","doi":"10.1109/WSCE49000.2019.9041071","DOIUrl":"https://doi.org/10.1109/WSCE49000.2019.9041071","url":null,"abstract":"Bayesian optimization is applied to antenna subset selection and transmit phase adjustment in distributed microwave power transfer. Both of the optimization controls are iteratively carried out based on energy feedback to maximize the received power in the low-complexity hardware configuration of massive antenna deployment. In addition, the computational complexity is reduced by exploiting the cyclic property of received power with respect to the transmit phase rotation. Our simulation results demonstrate that 95 percent of the maximum achievable received signal power was attained in 97 percent of the total trials by using 34 samples in both controls.","PeriodicalId":153298,"journal":{"name":"2019 2nd World Symposium on Communication Engineering (WSCE)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126050998","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 : 2019-12-01DOI: 10.1109/wsce49000.2019.9041029
{"title":"WSCE 2019 Preface","authors":"","doi":"10.1109/wsce49000.2019.9041029","DOIUrl":"https://doi.org/10.1109/wsce49000.2019.9041029","url":null,"abstract":"","PeriodicalId":153298,"journal":{"name":"2019 2nd World Symposium on Communication Engineering (WSCE)","volume":"113 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124705852","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 : 2019-12-01DOI: 10.1109/WSCE49000.2019.9040983
M. Cho, S. S. Tiang, W. H. Lim, M. Mokayef
A novel compact coplanar waveguide (CPW) fed ultra-wideband (UWB) antenna comprising of a trapezoidal-shape monopole-like slot and a CPW fork-shared feeding structure is presented. The proposed antenna offers a compact size of 25 mm $times$ 28 mm $times$ 1.5 mm and a FR-4 dielectric substrate with dielectric constant of 4.4, aiming to achieve a wide operating bandwidth of 2.7 GHz to 13.0 GHz (137%). Extensive computer simulation studies were conducted to validate the feasibility of the proposed antenna for wireless body area network (WBAN) applications.
{"title":"Compact Trapezoidal-Shaped Monopole-Like Slot UWB Antenna for WBAN Applications","authors":"M. Cho, S. S. Tiang, W. H. Lim, M. Mokayef","doi":"10.1109/WSCE49000.2019.9040983","DOIUrl":"https://doi.org/10.1109/WSCE49000.2019.9040983","url":null,"abstract":"A novel compact coplanar waveguide (CPW) fed ultra-wideband (UWB) antenna comprising of a trapezoidal-shape monopole-like slot and a CPW fork-shared feeding structure is presented. The proposed antenna offers a compact size of 25 mm $times$ 28 mm $times$ 1.5 mm and a FR-4 dielectric substrate with dielectric constant of 4.4, aiming to achieve a wide operating bandwidth of 2.7 GHz to 13.0 GHz (137%). Extensive computer simulation studies were conducted to validate the feasibility of the proposed antenna for wireless body area network (WBAN) applications.","PeriodicalId":153298,"journal":{"name":"2019 2nd World Symposium on Communication Engineering (WSCE)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124066028","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 : 2019-12-01DOI: 10.1109/WSCE49000.2019.9040951
Seiya Matsunaga, Naotoshi Adachi
In recent years, Internet of Things (IoT) is being penetrated in various fields. In the IoT paradigm, wireless adhoc network (WANET) is an important communication infrastructure. The malicious attacker can access sensor node and steal a security related information such as a key stored in the device easily, and then they can inject malicious nodes, which can pass through authentication with a stolen key, and which can perform a falsification, into networks. Therefore, the key based schemes cannot effectively work in the situation which the key is not secure, and the reliability of the data is completely lost. In this paper, we propose the message authentication protocol using homomorphic hash function without complete safety of key, in WANET environment with limited resources for each node.
{"title":"Message Authentication Scheme for ad hoc Networks with Homomorphic Hash Function","authors":"Seiya Matsunaga, Naotoshi Adachi","doi":"10.1109/WSCE49000.2019.9040951","DOIUrl":"https://doi.org/10.1109/WSCE49000.2019.9040951","url":null,"abstract":"In recent years, Internet of Things (IoT) is being penetrated in various fields. In the IoT paradigm, wireless adhoc network (WANET) is an important communication infrastructure. The malicious attacker can access sensor node and steal a security related information such as a key stored in the device easily, and then they can inject malicious nodes, which can pass through authentication with a stolen key, and which can perform a falsification, into networks. Therefore, the key based schemes cannot effectively work in the situation which the key is not secure, and the reliability of the data is completely lost. In this paper, we propose the message authentication protocol using homomorphic hash function without complete safety of key, in WANET environment with limited resources for each node.","PeriodicalId":153298,"journal":{"name":"2019 2nd World Symposium on Communication Engineering (WSCE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130701139","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 : 2019-12-01DOI: 10.1109/WSCE49000.2019.9041150
Lin Yang, Si-Yuan Ma, Hongyu Yang, Hongcheng Tan
Due to the severe signal attenuation of millimetre-wave communication systems, the large antenna arrays are required to achieve high power gain via utilizing beamforming technique at both transmitter and receiver. To settle the problem that the exhaustive search algorithm is computationally prohibitive to obtain the narrow beams accurately, hierarchical search whose performance is strongly correlated with the codebook design has been widely used to reduce the search complexity. In this paper, we rotate hierarchical codebook with half beam width and enlarge the search range properly in hierarchical search process to mitigate the effects that lower power gain at the edge of beams makes performance degradation in beam training. Simulation results show superiority of the improved hierarchical search over traditional one with acceptable complexity.
{"title":"A Hierarchical Beam Search Algorithm with BetterPerformance for Millimeter-Wave Communication","authors":"Lin Yang, Si-Yuan Ma, Hongyu Yang, Hongcheng Tan","doi":"10.1109/WSCE49000.2019.9041150","DOIUrl":"https://doi.org/10.1109/WSCE49000.2019.9041150","url":null,"abstract":"Due to the severe signal attenuation of millimetre-wave communication systems, the large antenna arrays are required to achieve high power gain via utilizing beamforming technique at both transmitter and receiver. To settle the problem that the exhaustive search algorithm is computationally prohibitive to obtain the narrow beams accurately, hierarchical search whose performance is strongly correlated with the codebook design has been widely used to reduce the search complexity. In this paper, we rotate hierarchical codebook with half beam width and enlarge the search range properly in hierarchical search process to mitigate the effects that lower power gain at the edge of beams makes performance degradation in beam training. Simulation results show superiority of the improved hierarchical search over traditional one with acceptable complexity.","PeriodicalId":153298,"journal":{"name":"2019 2nd World Symposium on Communication Engineering (WSCE)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115668521","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 : 2019-12-01DOI: 10.1109/WSCE49000.2019.9041017
Yihan Wang
With the rapid development of mobile communication technology and the increasing requirements of mobile data services, elastic optical network (EON) which has better resource utilization and more flexible spectrum allocation is widely investigated. EON could support a transmission rate from Gbps to Tbps. It could also adjust modulation format according to different transmission distance so that it could make better utilization of spectrum resources. Owing to flexible grid, spectrum allocation should satisfy the criteria of spectrum consistency and spectrum continuity, which would lead to spectrum fragmentation and decrease the network performance. In this paper, the spectrum fragmentation problem in EON is investigated. Firstly, the reason of spectrum fragmentation problem is introduced. Then different Spectrum defragmentation algorithms are analyzed and compared in detail. Finally, the future development of spectrum defragmentation methods is prospected.
{"title":"A Research on Spectrum Defragmentation Algorithms in Elastic Optical Network","authors":"Yihan Wang","doi":"10.1109/WSCE49000.2019.9041017","DOIUrl":"https://doi.org/10.1109/WSCE49000.2019.9041017","url":null,"abstract":"With the rapid development of mobile communication technology and the increasing requirements of mobile data services, elastic optical network (EON) which has better resource utilization and more flexible spectrum allocation is widely investigated. EON could support a transmission rate from Gbps to Tbps. It could also adjust modulation format according to different transmission distance so that it could make better utilization of spectrum resources. Owing to flexible grid, spectrum allocation should satisfy the criteria of spectrum consistency and spectrum continuity, which would lead to spectrum fragmentation and decrease the network performance. In this paper, the spectrum fragmentation problem in EON is investigated. Firstly, the reason of spectrum fragmentation problem is introduced. Then different Spectrum defragmentation algorithms are analyzed and compared in detail. Finally, the future development of spectrum defragmentation methods is prospected.","PeriodicalId":153298,"journal":{"name":"2019 2nd World Symposium on Communication Engineering (WSCE)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123714002","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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