Pub Date : 2019-05-09DOI: 10.1109/WOCC.2019.8770524
Hongquan Zhu, Xin Gao, Chengqiang Lei
Duplex laser communication system can achieve high-precision ranging and clock synchronization between terminals in spacecrafts with high data rate transmission. By measuring the transmission and arrival time of data frames during the detection of frame synchronization in laser communication, we resolved the range, time difference and frequency difference simultaneously. Furthermore, we designed a prototype of laser communication system with space and ground terminals separated by a free space to validate the ranging method for asynchronous transponders. For this duplex laser communication demonstration with data rate of 2.5 Gbps, we achieved very high precision with two-way ranging accuracy of 5.4 mm, frequency difference standard deviation of 3.4×10−13, and time difference standard deviation of 2.9 ns. Such high-precision ranging accuracy would be valuable for orbit determination, and the precise measurement of time and frequency difference could be used for disciplining the satellite clock by the high-stability ground clock.
{"title":"Asynchronous Laser Transponder Method for High-Precision Ranging and Clock Synchronization","authors":"Hongquan Zhu, Xin Gao, Chengqiang Lei","doi":"10.1109/WOCC.2019.8770524","DOIUrl":"https://doi.org/10.1109/WOCC.2019.8770524","url":null,"abstract":"Duplex laser communication system can achieve high-precision ranging and clock synchronization between terminals in spacecrafts with high data rate transmission. By measuring the transmission and arrival time of data frames during the detection of frame synchronization in laser communication, we resolved the range, time difference and frequency difference simultaneously. Furthermore, we designed a prototype of laser communication system with space and ground terminals separated by a free space to validate the ranging method for asynchronous transponders. For this duplex laser communication demonstration with data rate of 2.5 Gbps, we achieved very high precision with two-way ranging accuracy of 5.4 mm, frequency difference standard deviation of 3.4×10−13, and time difference standard deviation of 2.9 ns. Such high-precision ranging accuracy would be valuable for orbit determination, and the precise measurement of time and frequency difference could be used for disciplining the satellite clock by the high-stability ground clock.","PeriodicalId":285172,"journal":{"name":"2019 28th Wireless and Optical Communications Conference (WOCC)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129587408","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 : 2019-05-09DOI: 10.1109/WOCC.2019.8770542
Wenpeng Li, L. Du, Yuevun Chen
Successive cancellation list (SCL) decoding algorithm for polar codes is one of the best decoding algorithms due to its excellent decoding performance. The decoding complexity of conventional SCL decoding algorithm is O(LN log N). The decoding complexity will increase as the size of the list increases. To solve this problem, we introduce an improved SCL decoding algorithm based on the sequential probability ratio test (SPRT). The proposed algorithm use double thresholds to decode the polar codes instead of single threshold decision used by the conventional SCL algorithm. Numerical results have shown that for (1024, 512) polar code, the proposed SPRT-SCL decoder can achieve a reduction in decoding complexity, and keep the similar decoding performance compared with conventional SCL decoder.
{"title":"Low-complexity Successive Cancellation List Decoding for Polar Codes based on SPRT","authors":"Wenpeng Li, L. Du, Yuevun Chen","doi":"10.1109/WOCC.2019.8770542","DOIUrl":"https://doi.org/10.1109/WOCC.2019.8770542","url":null,"abstract":"Successive cancellation list (SCL) decoding algorithm for polar codes is one of the best decoding algorithms due to its excellent decoding performance. The decoding complexity of conventional SCL decoding algorithm is O(LN log N). The decoding complexity will increase as the size of the list increases. To solve this problem, we introduce an improved SCL decoding algorithm based on the sequential probability ratio test (SPRT). The proposed algorithm use double thresholds to decode the polar codes instead of single threshold decision used by the conventional SCL algorithm. Numerical results have shown that for (1024, 512) polar code, the proposed SPRT-SCL decoder can achieve a reduction in decoding complexity, and keep the similar decoding performance compared with conventional SCL decoder.","PeriodicalId":285172,"journal":{"name":"2019 28th Wireless and Optical Communications Conference (WOCC)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130118647","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 : 2019-05-09DOI: 10.1109/WOCC.2019.8770664
M. N. Irshad, Liping Du, I. A. Khoso, T. Javed, Muhammad Muzamil Aslam
5G (Fifth generation) is comparatively more advanced telecommunication technology in cellular networks that has higher speed and wide range. 5G technology will be implemented in 2020, which could provide 100 times faster speed rate than the already existing 4G or LTE technologies. Currently Hybrid model is used in 5G architecture. In this study we have involved some critical components of 5G hybrid model for SDN, which are created by virtualization on currently deployed physical SDN networks. Findings from the study of hybrid 5G model would require further development in media transmission and innovation for making more improvements in data rate speed. The Proposed model is based on a scheme, which supports, and is integrated, with both optical and wireless domains. It would be a unified management system which could have the optical components with 5G wireless components.
{"title":"A Hybrid Solution of SDN Architecture for 5G Mobile Communication to Improve Data Rate Transmission","authors":"M. N. Irshad, Liping Du, I. A. Khoso, T. Javed, Muhammad Muzamil Aslam","doi":"10.1109/WOCC.2019.8770664","DOIUrl":"https://doi.org/10.1109/WOCC.2019.8770664","url":null,"abstract":"5G (Fifth generation) is comparatively more advanced telecommunication technology in cellular networks that has higher speed and wide range. 5G technology will be implemented in 2020, which could provide 100 times faster speed rate than the already existing 4G or LTE technologies. Currently Hybrid model is used in 5G architecture. In this study we have involved some critical components of 5G hybrid model for SDN, which are created by virtualization on currently deployed physical SDN networks. Findings from the study of hybrid 5G model would require further development in media transmission and innovation for making more improvements in data rate speed. The Proposed model is based on a scheme, which supports, and is integrated, with both optical and wireless domains. It would be a unified management system which could have the optical components with 5G wireless components.","PeriodicalId":285172,"journal":{"name":"2019 28th Wireless and Optical Communications Conference (WOCC)","volume":"17 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131972736","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 : 2019-05-09DOI: 10.1109/WOCC.2019.8770580
Saleemullah Memon, K. A. Memon, Zhifeng Wang
Energy harvesting (EH) using simultaneous wireless information and power transfer (SWIPT) is an attractive solution in the context of enhancing the battery life of wireless devices for entirely reliable communication systems. Strong signal power can increase the power transfer. However, it also creates more interference in transmitting information, causing the realization of the SWIPT as a challenging problem. In this paper, SWIPT with multi-input-multi-output (MIMO) is considered for two users based on the precoding design. The source node (SN) will send the information and energy concurrently to the relay node (RN) in the first time phase within the SWIPT framework. Then the RN will reassemble the received signal and self-signal based on the decode and forward (DF) relaying protocol in the second time phase. Our target is to increase the EH at the RN under the data rate constraint of the SN and to maximize the data rate and downlink signal-to-interference-plus-noise-ratio (SINR) of the secondary user under the conditions to satisfy the quality of service (QoS) of the first user. Semidefinite relaxation (SDR) and Charnes-cooper transformation techniques are used to solve the nonconvex optimization problem. To support both the optimization problems CVX is premeditated, which is an efficient tool to solve convex and semidefinite programming (SDP) problems.
{"title":"Cooperative Relaying Network Under SWIPT MIMO System","authors":"Saleemullah Memon, K. A. Memon, Zhifeng Wang","doi":"10.1109/WOCC.2019.8770580","DOIUrl":"https://doi.org/10.1109/WOCC.2019.8770580","url":null,"abstract":"Energy harvesting (EH) using simultaneous wireless information and power transfer (SWIPT) is an attractive solution in the context of enhancing the battery life of wireless devices for entirely reliable communication systems. Strong signal power can increase the power transfer. However, it also creates more interference in transmitting information, causing the realization of the SWIPT as a challenging problem. In this paper, SWIPT with multi-input-multi-output (MIMO) is considered for two users based on the precoding design. The source node (SN) will send the information and energy concurrently to the relay node (RN) in the first time phase within the SWIPT framework. Then the RN will reassemble the received signal and self-signal based on the decode and forward (DF) relaying protocol in the second time phase. Our target is to increase the EH at the RN under the data rate constraint of the SN and to maximize the data rate and downlink signal-to-interference-plus-noise-ratio (SINR) of the secondary user under the conditions to satisfy the quality of service (QoS) of the first user. Semidefinite relaxation (SDR) and Charnes-cooper transformation techniques are used to solve the nonconvex optimization problem. To support both the optimization problems CVX is premeditated, which is an efficient tool to solve convex and semidefinite programming (SDP) problems.","PeriodicalId":285172,"journal":{"name":"2019 28th Wireless and Optical Communications Conference (WOCC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132335494","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 : 2019-05-09DOI: 10.1109/WOCC.2019.8770686
Taohua Chen, Yueyun Chen, Rongling Jian, Zushen Liu
In this paper, a novel wideband shorted-patch antenna with a π-shaped slot under three resonant modes is proposed. A horizontal rectangular slot is introduced on the shorted patch to excite two odd modes with close frequency points, the initial shorted patch resonates at TM30 mode and the larger patch without shorting wall connected, which created by the horizontal rectangular slot operates at TM10 mode. Furthermore, two symmetrical vertical rectangular slots are cut on the larger patch to reduce the frequency of TM12mode of larger patch, and the three rectangular slots form a π-shaped slot. Moreover, a semicircular ring slot is used to achieve a good impedance matching. Based on the arrangements above, a wideband shorted-patch antenna can finally be realized. The simulation results show that the impedance bandwidth of proposed shorted-patch antenna for [S11] < −10 dB is extended to 42.8% at the profile of 0.067 free-space wavelength. Additionally, the proposed antenna maintains a stable radiation pattern over the operating band.
{"title":"A Novel Wideband Shorted-Patch Antenna with A π—Shaped Slot Under Three Resonant Modes","authors":"Taohua Chen, Yueyun Chen, Rongling Jian, Zushen Liu","doi":"10.1109/WOCC.2019.8770686","DOIUrl":"https://doi.org/10.1109/WOCC.2019.8770686","url":null,"abstract":"In this paper, a novel wideband shorted-patch antenna with a π-shaped slot under three resonant modes is proposed. A horizontal rectangular slot is introduced on the shorted patch to excite two odd modes with close frequency points, the initial shorted patch resonates at TM30 mode and the larger patch without shorting wall connected, which created by the horizontal rectangular slot operates at TM10 mode. Furthermore, two symmetrical vertical rectangular slots are cut on the larger patch to reduce the frequency of TM12mode of larger patch, and the three rectangular slots form a π-shaped slot. Moreover, a semicircular ring slot is used to achieve a good impedance matching. Based on the arrangements above, a wideband shorted-patch antenna can finally be realized. The simulation results show that the impedance bandwidth of proposed shorted-patch antenna for [S11] < −10 dB is extended to 42.8% at the profile of 0.067 free-space wavelength. Additionally, the proposed antenna maintains a stable radiation pattern over the operating band.","PeriodicalId":285172,"journal":{"name":"2019 28th Wireless and Optical Communications Conference (WOCC)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133718561","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 : 2019-05-09DOI: 10.1109/WOCC.2019.8770671
Jie Miao, Yueyun Chen, Zhiyuan Mai
The millimeter wave (mmWave) communication with high frequency bands can improve the capacity of the wireless network significantly. However, the large bandwidth and time varying characteristic of the mmWave channel lead to a large increase in the computational complexity of conventional channel estimation algorithms. In this paper, we proposed a novel mmWave channel estimation algorithm based on Imperialist Competitive-Extreme Learning Machine (IC-ELM). The number of hidden neurons is optimized by Imperialist Competitive Algorithm (ICA) in the structure of Extreme Learning Machine (ELM) according to the mean square error (MSE) between the actual and estimated channel state information (CSI). The IC-ELM is trained by the channel frequency response (CFR) of pilot positions to learn the channel characteristics. Further, the CSI of mmWave channel can be estimated by the trained IC-ELM network. Compared with conventional channel estimation algorithms, the simulation results show that the proposed IC-ELM mmWave channel estimation algorithm can achieve better performance in terms of MSE and bit error rate (BER). And the proposed IC-ELM is available in different types of mmWave channel models.
{"title":"A Novel Millimeter Wave Channel Estimation Algorithm Based on IC-ELM","authors":"Jie Miao, Yueyun Chen, Zhiyuan Mai","doi":"10.1109/WOCC.2019.8770671","DOIUrl":"https://doi.org/10.1109/WOCC.2019.8770671","url":null,"abstract":"The millimeter wave (mmWave) communication with high frequency bands can improve the capacity of the wireless network significantly. However, the large bandwidth and time varying characteristic of the mmWave channel lead to a large increase in the computational complexity of conventional channel estimation algorithms. In this paper, we proposed a novel mmWave channel estimation algorithm based on Imperialist Competitive-Extreme Learning Machine (IC-ELM). The number of hidden neurons is optimized by Imperialist Competitive Algorithm (ICA) in the structure of Extreme Learning Machine (ELM) according to the mean square error (MSE) between the actual and estimated channel state information (CSI). The IC-ELM is trained by the channel frequency response (CFR) of pilot positions to learn the channel characteristics. Further, the CSI of mmWave channel can be estimated by the trained IC-ELM network. Compared with conventional channel estimation algorithms, the simulation results show that the proposed IC-ELM mmWave channel estimation algorithm can achieve better performance in terms of MSE and bit error rate (BER). And the proposed IC-ELM is available in different types of mmWave channel models.","PeriodicalId":285172,"journal":{"name":"2019 28th Wireless and Optical Communications Conference (WOCC)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117219827","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}
With the continuous development of satellite industry, online monitoring and fault diagnosis for satellite communication system becomes more important. Due to the difficulty in obtaining sufficient features of communication system, the conventional multi-classification algorithm Directed Acyclic Graph Support Vector Machine (DAG-SVM) has low diagnostic efficiency and poor coupling diagnosis performance. On the other hand, it has been proved that extending the feature space can effectively improve the classification performance. Therefore, this paper proposed a modified multi-classification algorithm called Feature-Extended Directed Acyclic Graph Least Square Twin Support Vector Machine (FEDAG-LSTSVM). The new algorithm combined all the initial features and their random combinations to establish coupling and redundancy for every feature, and then constructed the Separable Metric (SM) as classification measurement to arrange the structure sequencing of DAG-LSTSVM. To verify the utility of the algorithm, the standard monitoring signal indicators in satellite communication system were taken as experimental data. Preliminary simulation results demonstrate that the proposed algorithm improves the fault diagnosis accuracy to 89.69% but with 54.20% less computational time in 10-fold cross-validation compared with DAG-SVM, which means it can be well applied to diagnose fault for satellites communication system.
{"title":"A Modified DAG-SVM Algorithm for the Fault Diagnosis in Satellite Communication System","authors":"Xiubo Sun, Hongbo Zhao, Changbiao Lei, Haoqiang Liu, Guangxuan Zhu","doi":"10.1109/WOCC.2019.8770584","DOIUrl":"https://doi.org/10.1109/WOCC.2019.8770584","url":null,"abstract":"With the continuous development of satellite industry, online monitoring and fault diagnosis for satellite communication system becomes more important. Due to the difficulty in obtaining sufficient features of communication system, the conventional multi-classification algorithm Directed Acyclic Graph Support Vector Machine (DAG-SVM) has low diagnostic efficiency and poor coupling diagnosis performance. On the other hand, it has been proved that extending the feature space can effectively improve the classification performance. Therefore, this paper proposed a modified multi-classification algorithm called Feature-Extended Directed Acyclic Graph Least Square Twin Support Vector Machine (FEDAG-LSTSVM). The new algorithm combined all the initial features and their random combinations to establish coupling and redundancy for every feature, and then constructed the Separable Metric (SM) as classification measurement to arrange the structure sequencing of DAG-LSTSVM. To verify the utility of the algorithm, the standard monitoring signal indicators in satellite communication system were taken as experimental data. Preliminary simulation results demonstrate that the proposed algorithm improves the fault diagnosis accuracy to 89.69% but with 54.20% less computational time in 10-fold cross-validation compared with DAG-SVM, which means it can be well applied to diagnose fault for satellites communication system.","PeriodicalId":285172,"journal":{"name":"2019 28th Wireless and Optical Communications Conference (WOCC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128998713","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 : 2019-05-01DOI: 10.1109/WOCC.2019.8770637
Xinghang Zhou, Cheng Xu, Jie He, Jiawang Wan
Wireless positioning technology based on TDOA is an effective supplement to GPS-denied environment. However, traditional TDOA technologies often require precise time synchronization, a process that is usually done wired. It greatly increases the difficulty of deployment and limit the scope of application of the system. At the same time, cross-regional TDOA deployment application is also the main difficulty of the current research. Therefore, a cross-region TDOA positioning method based on wireless time synchronization is proposed in this paper to achieve high-precision time synchronization and improve the positioning accuracy and robustness of the system.
{"title":"A Cross-region Wireless-synchronization - based TDOA Method for Indoor Positioning Applications","authors":"Xinghang Zhou, Cheng Xu, Jie He, Jiawang Wan","doi":"10.1109/WOCC.2019.8770637","DOIUrl":"https://doi.org/10.1109/WOCC.2019.8770637","url":null,"abstract":"Wireless positioning technology based on TDOA is an effective supplement to GPS-denied environment. However, traditional TDOA technologies often require precise time synchronization, a process that is usually done wired. It greatly increases the difficulty of deployment and limit the scope of application of the system. At the same time, cross-regional TDOA deployment application is also the main difficulty of the current research. Therefore, a cross-region TDOA positioning method based on wireless time synchronization is proposed in this paper to achieve high-precision time synchronization and improve the positioning accuracy and robustness of the system.","PeriodicalId":285172,"journal":{"name":"2019 28th Wireless and Optical Communications Conference (WOCC)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126117154","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 : 2019-05-01DOI: 10.1109/WOCC.2019.8770604
J. Lu, Limin Xiao, Zhigang Tian, Ming Zhao, Wenbo Wang
5G is supposed to support not only explosive growth of mobile traffic but also massive number of connected devices. Simply evolving current 4G Long Term Evolution (LTE) networks can't meet the demand of 5G. 3rd Generation Partnership Project (3GPP) has proposed Service-Based Architecture (SBA) core network in release 15. But SBA also brings great complexity and big challenges to core network development and deployment. To solve challenging requirements related to SBA, 3GPP is working on enhancements to SBA design in release 16. We propose an enhanced SBA design called Not-Only-Stack (NoStack), including efficient inter-service communication mechanism and management plane for Network Functions (NFs) managing. The main idea of NoStack is to decouple business logic from inter-service communication to improve service agility. We also carry out some evaluations on performance of different inter-service communication mechanisms.
{"title":"5G Enhanced Service-based Core Design","authors":"J. Lu, Limin Xiao, Zhigang Tian, Ming Zhao, Wenbo Wang","doi":"10.1109/WOCC.2019.8770604","DOIUrl":"https://doi.org/10.1109/WOCC.2019.8770604","url":null,"abstract":"5G is supposed to support not only explosive growth of mobile traffic but also massive number of connected devices. Simply evolving current 4G Long Term Evolution (LTE) networks can't meet the demand of 5G. 3rd Generation Partnership Project (3GPP) has proposed Service-Based Architecture (SBA) core network in release 15. But SBA also brings great complexity and big challenges to core network development and deployment. To solve challenging requirements related to SBA, 3GPP is working on enhancements to SBA design in release 16. We propose an enhanced SBA design called Not-Only-Stack (NoStack), including efficient inter-service communication mechanism and management plane for Network Functions (NFs) managing. The main idea of NoStack is to decouple business logic from inter-service communication to improve service agility. We also carry out some evaluations on performance of different inter-service communication mechanisms.","PeriodicalId":285172,"journal":{"name":"2019 28th Wireless and Optical Communications Conference (WOCC)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129267831","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 : 2019-05-01DOI: 10.1109/WOCC.2019.8770556
Weijian Chen, Yejun He, Jian Qiao
Mobile Edge Computing (MEC) is a promising technique that provides distributed computing and storage resources at the edge of a network. In this talk, we investigate a stochastic optimization problem to minimize the cost of MEC system. Firstly, we use the stability of the task buffer queue as constraints to formulate the cost minimization problem. Then we propose the Lyapunov optimization theory to transform the original problem into a deterministic problem. The optimal CPU frequency and optimal transmit power can be obtained in a closed form. In addition, we establish a [O(1V), O(V)] tradeoff between the system cost and execution latency. Simulation results are provided to verify theoretical analysis and demonstrate the effects of various parameters.
{"title":"Cost Minimization for Cooperative Mobile Edge Computing Systems","authors":"Weijian Chen, Yejun He, Jian Qiao","doi":"10.1109/WOCC.2019.8770556","DOIUrl":"https://doi.org/10.1109/WOCC.2019.8770556","url":null,"abstract":"Mobile Edge Computing (MEC) is a promising technique that provides distributed computing and storage resources at the edge of a network. In this talk, we investigate a stochastic optimization problem to minimize the cost of MEC system. Firstly, we use the stability of the task buffer queue as constraints to formulate the cost minimization problem. Then we propose the Lyapunov optimization theory to transform the original problem into a deterministic problem. The optimal CPU frequency and optimal transmit power can be obtained in a closed form. In addition, we establish a [O(1V), O(V)] tradeoff between the system cost and execution latency. Simulation results are provided to verify theoretical analysis and demonstrate the effects of various parameters.","PeriodicalId":285172,"journal":{"name":"2019 28th Wireless and Optical Communications Conference (WOCC)","volume":"314 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126935578","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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