Pub Date : 2018-09-13DOI: 10.1109/CCE.2018.8465760
Minh N. Vu, N. Tran, H. Tuan, T. V. Nguyen, D. Nguyen
This paper investigates the optimal input and capacity of non-coherent correlated multiple-input singleoutput (MISO) channels in fast Rayleigh fading under per-antenna power constraints. Toward this end, we first establish the convex and compact properties of the feasible sets, and demonstrate the existence of the optimal input distribution and the uniqueness of the optimal effective magnitude input distribution. By exploiting the solutions of a quadratic optimization problem, we show that the Kuhn-Tucker condition (KTC) on the optimal inputs can be simplified to a single dimension. As a result, we can apply the Identity Theorem to show the discrete and finite nature of the optimal effective magnitude distribution. By using this distribution, we then construct a finite and discrete optimal input vector distribution. The use of this input allows us to determine precisely the capacity gain of MISO over SISO via the phase solutions of a non-convex constrained quadratic optimization problem on a sphere. These phase solutions can be calculated effectively via a proposed penalized optimization algorithm.
{"title":"On Optimal Input and Capacity of Non-Coherent Correlated MISO Channels under Per-Antenna Power Constraints","authors":"Minh N. Vu, N. Tran, H. Tuan, T. V. Nguyen, D. Nguyen","doi":"10.1109/CCE.2018.8465760","DOIUrl":"https://doi.org/10.1109/CCE.2018.8465760","url":null,"abstract":"This paper investigates the optimal input and capacity of non-coherent correlated multiple-input singleoutput (MISO) channels in fast Rayleigh fading under per-antenna power constraints. Toward this end, we first establish the convex and compact properties of the feasible sets, and demonstrate the existence of the optimal input distribution and the uniqueness of the optimal effective magnitude input distribution. By exploiting the solutions of a quadratic optimization problem, we show that the Kuhn-Tucker condition (KTC) on the optimal inputs can be simplified to a single dimension. As a result, we can apply the Identity Theorem to show the discrete and finite nature of the optimal effective magnitude distribution. By using this distribution, we then construct a finite and discrete optimal input vector distribution. The use of this input allows us to determine precisely the capacity gain of MISO over SISO via the phase solutions of a non-convex constrained quadratic optimization problem on a sphere. These phase solutions can be calculated effectively via a proposed penalized optimization algorithm.","PeriodicalId":118716,"journal":{"name":"2018 IEEE Seventh International Conference on Communications and Electronics (ICCE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130458037","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 : 2018-07-18DOI: 10.1109/CCE.2018.8465749
Hamza Khan, S. Yoo
In multi-channel ad-hoc cognitive radio networks, each channel has different wireless channel gain and primary activity so that achievable data rate to secondary users (SUs) and required sensing parameter value are channel dependent. SUs also have different energy saving requirements and data traffic demands. In this paper, a dynamic MAC frame configuration and optimal resource allocation scheme for multi-channel ad-hoc cognitive radio network is proposed. We formulate our dynamic resource allocation model as a constrained optimization problem with multi-objective functions using particle swarm optimization (PSO) algorithm. The proposed PSO scheme guarantees that the allocation captures the individual traffic and energy saving demands and maximizes the objectives functions simultaneously.
{"title":"Multi-Objective Optimal Resource Allocation Using Particle Swarm Optimization in Cognitive Radio","authors":"Hamza Khan, S. Yoo","doi":"10.1109/CCE.2018.8465749","DOIUrl":"https://doi.org/10.1109/CCE.2018.8465749","url":null,"abstract":"In multi-channel ad-hoc cognitive radio networks, each channel has different wireless channel gain and primary activity so that achievable data rate to secondary users (SUs) and required sensing parameter value are channel dependent. SUs also have different energy saving requirements and data traffic demands. In this paper, a dynamic MAC frame configuration and optimal resource allocation scheme for multi-channel ad-hoc cognitive radio network is proposed. We formulate our dynamic resource allocation model as a constrained optimization problem with multi-objective functions using particle swarm optimization (PSO) algorithm. The proposed PSO scheme guarantees that the allocation captures the individual traffic and energy saving demands and maximizes the objectives functions simultaneously.","PeriodicalId":118716,"journal":{"name":"2018 IEEE Seventh International Conference on Communications and Electronics (ICCE)","volume":"1778 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129567437","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 : 2018-07-01DOI: 10.1109/CCE.2018.8465744
Linh Duc Tam Ho, Duy Quang Duong, D. C. Truong, Quynh Nguyen Quang Nhu, H. N. Tan
This paper presents a structure realizing an optical mode exchange function using three multimode interferences on silicon-on-insulator substrate, and optimized its performance through 3D beam propagation method simulation with effective index method. Simulations demonstrate a successful exchange of two mode TE0 and TE1 with only 0.38 power loss and small crosstalk of −19 dB within a whole C band. Furthermore, large fabrication tolerance is also an advantage of the device. We believe that the proposed optical mode exchange would be used as an important component to improve the flexibility and efficiency of optical networks using mode-division multiplexing.
{"title":"Design and Optimization of Optical Mode Exchange Based on Cascaded Multimode Interferences","authors":"Linh Duc Tam Ho, Duy Quang Duong, D. C. Truong, Quynh Nguyen Quang Nhu, H. N. Tan","doi":"10.1109/CCE.2018.8465744","DOIUrl":"https://doi.org/10.1109/CCE.2018.8465744","url":null,"abstract":"This paper presents a structure realizing an optical mode exchange function using three multimode interferences on silicon-on-insulator substrate, and optimized its performance through 3D beam propagation method simulation with effective index method. Simulations demonstrate a successful exchange of two mode TE0 and TE1 with only 0.38 power loss and small crosstalk of −19 dB within a whole C band. Furthermore, large fabrication tolerance is also an advantage of the device. We believe that the proposed optical mode exchange would be used as an important component to improve the flexibility and efficiency of optical networks using mode-division multiplexing.","PeriodicalId":118716,"journal":{"name":"2018 IEEE Seventh International Conference on Communications and Electronics (ICCE)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127186688","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 : 2018-07-01DOI: 10.1109/CCE.2018.8465757
A. Q. Nguyen, Vu Truong Son Dao, K. Shimonomura, T. Etoh
To achieve ultra-high speed imaging and also high sensitivity, a novel structure of image sensor, Backside-Illuminated Multi-Collection-Gate (BSI-MCG) was proposed in 2013. We have been working for the target temporal resolution of nanosecond order. Then, we named the image sensor "Nano-Second Image Sensor" or "NanoSIS". In the sensor, incident light arrives the sensor on the backside and generates signal electrons. The signals electrons travel to the front side on which five collection gates and a drain gate are placed like petals of a flower of the pixel. At a certain time, the signal electrons are collected by one of the collection gates in turn. The temporal resolution of the sensor is limited by the variation of the travel time of signal electrons. The test sensor is fabricated and under evaluation. The frame rate of 100 Mfps or the temporal resolution of 10 ns is successfully achieved. The sensor can capture 5 consecutive frames with 600 kpixels or 10 consecutive frames with 300 kpixels. The sensor may be applicable to imaging TOF MS (Time-of-Flight mass spectrometry) and/or FLIM (Fluorescence Lifetime Imaging Microscopy). The paper presents the structure of the sensor and the evaluation results to prove the achieved frame rate.
{"title":"A 600 Kpixels Image Sensor Operates at 100Mfps for Multi-Framing Camera","authors":"A. Q. Nguyen, Vu Truong Son Dao, K. Shimonomura, T. Etoh","doi":"10.1109/CCE.2018.8465757","DOIUrl":"https://doi.org/10.1109/CCE.2018.8465757","url":null,"abstract":"To achieve ultra-high speed imaging and also high sensitivity, a novel structure of image sensor, Backside-Illuminated Multi-Collection-Gate (BSI-MCG) was proposed in 2013. We have been working for the target temporal resolution of nanosecond order. Then, we named the image sensor \"Nano-Second Image Sensor\" or \"NanoSIS\". In the sensor, incident light arrives the sensor on the backside and generates signal electrons. The signals electrons travel to the front side on which five collection gates and a drain gate are placed like petals of a flower of the pixel. At a certain time, the signal electrons are collected by one of the collection gates in turn. The temporal resolution of the sensor is limited by the variation of the travel time of signal electrons. The test sensor is fabricated and under evaluation. The frame rate of 100 Mfps or the temporal resolution of 10 ns is successfully achieved. The sensor can capture 5 consecutive frames with 600 kpixels or 10 consecutive frames with 300 kpixels. The sensor may be applicable to imaging TOF MS (Time-of-Flight mass spectrometry) and/or FLIM (Fluorescence Lifetime Imaging Microscopy). The paper presents the structure of the sensor and the evaluation results to prove the achieved frame rate.","PeriodicalId":118716,"journal":{"name":"2018 IEEE Seventh International Conference on Communications and Electronics (ICCE)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122479554","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 : 2018-07-01DOI: 10.1109/CCE.2018.8465754
H. H. Bui, Van Du Le, S. Ta, Khac Kiem Nguyen, Chien Dao-Ngoc
A low-profile, broadband, circularly polarized (CP) patch antenna is presented. It consists of a driven patch using a loop feeding structure with the purpose of producing the CP radiation. The driven patch is surrounded by eight parasitic patches to broadening the antenna bandwidth. A metasurface, which is a periodic array composed of 10 × 10 square metallic plates, is inserted into between the patches and the ground plane in order to minimize the antenna size. The optimized antenna, with dimensions of 100 mm × 100 mm × 4 mm (0.7λo × 0.7λo × 0.028λo at 2.1 GHz) achieves an impedance matching bandwidth of 27.3% (1.9 – 2.5 GHz), a CP radiation bandwidth of 11.76% (2.00 – 2.27 GHz), the peak gain of 6.9 dBic, and a radiation efficiency of 76%.
提出了一种低轮廓、宽带圆极化(CP)贴片天线。它由一个驱动的贴片组成，采用环形馈电结构，目的是产生CP辐射。驱动贴片周围有8个寄生贴片，以扩大天线带宽。为了减小天线尺寸，在贴片和地平面之间插入一个由10 × 10方形金属板组成的超表面(metassurface)。优化后的天线尺寸为100 mm × 100 mm × 4 mm (0.7λo × 0.7λo × 0.028λo, 2.1 GHz)，阻抗匹配带宽为27.3% (1.9 ~ 2.5 GHz)， CP辐射带宽为11.76% (2.00 ~ 2.27 GHz)，峰值增益为6.9 dBic，辐射效率为76%。
{"title":"Minimization of Circularly Polarized Patch Antenna Using Metasurface","authors":"H. H. Bui, Van Du Le, S. Ta, Khac Kiem Nguyen, Chien Dao-Ngoc","doi":"10.1109/CCE.2018.8465754","DOIUrl":"https://doi.org/10.1109/CCE.2018.8465754","url":null,"abstract":"A low-profile, broadband, circularly polarized (CP) patch antenna is presented. It consists of a driven patch using a loop feeding structure with the purpose of producing the CP radiation. The driven patch is surrounded by eight parasitic patches to broadening the antenna bandwidth. A metasurface, which is a periodic array composed of 10 × 10 square metallic plates, is inserted into between the patches and the ground plane in order to minimize the antenna size. The optimized antenna, with dimensions of 100 mm × 100 mm × 4 mm (0.7λo × 0.7λo × 0.028λo at 2.1 GHz) achieves an impedance matching bandwidth of 27.3% (1.9 – 2.5 GHz), a CP radiation bandwidth of 11.76% (2.00 – 2.27 GHz), the peak gain of 6.9 dBic, and a radiation efficiency of 76%.","PeriodicalId":118716,"journal":{"name":"2018 IEEE Seventh International Conference on Communications and Electronics (ICCE)","volume":"264 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122852539","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 : 2018-07-01DOI: 10.1109/CCE.2018.8465715
M. Beccaria, A. Massaccesi, P. Pirinoli, Linh Ho Manh
In this paper, preliminary results on the feasibility of a multibeam antenna based on the use of a transmitarray are presented. A reduced size configuration has been properly designed and optimized, with the aim to minimize the degradation of the radiation pattern introduced by the variation in the direction of maximum radiation. Thereafter, the numerical analysis of the obtained antenna has been performed.
{"title":"Multibeam Transmitarrays for 5G Antenna Systems","authors":"M. Beccaria, A. Massaccesi, P. Pirinoli, Linh Ho Manh","doi":"10.1109/CCE.2018.8465715","DOIUrl":"https://doi.org/10.1109/CCE.2018.8465715","url":null,"abstract":"In this paper, preliminary results on the feasibility of a multibeam antenna based on the use of a transmitarray are presented. A reduced size configuration has been properly designed and optimized, with the aim to minimize the degradation of the radiation pattern introduced by the variation in the direction of maximum radiation. Thereafter, the numerical analysis of the obtained antenna has been performed.","PeriodicalId":118716,"journal":{"name":"2018 IEEE Seventh International Conference on Communications and Electronics (ICCE)","volume":"94 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114595501","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 : 2018-07-01DOI: 10.1109/CCE.2018.8465729
E. Cayirci, Chunming Rong
Blocknetwork, which is the network of blockchains, is introduced. It is a distributed, scalable, secure and ad hoc scheme designed for transforming big data to the higher levels in the data-information-knowledge-wisdom hierarchy. A blocknetwork can be perceived also as a NoSQL knowledgebase. The application areas include business knowledgebase management, and open source, measurement and signature intelligence fusion with military and security purposes.
{"title":"Blocknetwork for Big Information Fusion and NoSQL Knowledgebase Management","authors":"E. Cayirci, Chunming Rong","doi":"10.1109/CCE.2018.8465729","DOIUrl":"https://doi.org/10.1109/CCE.2018.8465729","url":null,"abstract":"Blocknetwork, which is the network of blockchains, is introduced. It is a distributed, scalable, secure and ad hoc scheme designed for transforming big data to the higher levels in the data-information-knowledge-wisdom hierarchy. A blocknetwork can be perceived also as a NoSQL knowledgebase. The application areas include business knowledgebase management, and open source, measurement and signature intelligence fusion with military and security purposes.","PeriodicalId":118716,"journal":{"name":"2018 IEEE Seventh International Conference on Communications and Electronics (ICCE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129849083","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 : 2018-07-01DOI: 10.1109/CCE.2018.8465721
S. Ta, Minh Duc Nguyen, Khac Kiem Nguyen, Chien Dao-Ngoc
In this paper, a low-profile, high-isolation, dual-polarized antenna using metasurface is proposed for use in the base stations of mobile communications. The antenna consists of two linear-polarized dipoles, which are arranged for horizontal and vertical polarizations. The dipole radiators are fed by two orthogonal printed baluns for the high isolation between the two ports. The metasurface, which is a square patch array periodically printed on a thin low-cost substrate, is inserted between the orthogonal dipoles and the reflector to achieve a low-profile and a bandwidth enhancement. The final prototype with an overall size of 160 mm × 160 mm × 15.2 mm (0.96λo × 0.96λo × 0.09λo at 1.8 GHz) yields a voltage standing wave ratio < 2 bandwidth of > 29% for the two ports and an isolation of > 30 dB. In addition, at both ports, the antenna achieves a gain of > 8.5 dBi and a radiation efficiency of > 83% across the operational bandwidth.
本文提出了一种应用于移动通信基站的低轮廓、高隔离、双极化超表面天线。天线由两个线极化偶极子组成，它们分别用于水平和垂直极化。偶极子散热器由两个正交的印刷平衡馈电，以保证两个端口之间的高度隔离。超表面是一个方形贴片阵列，周期性地印在薄的低成本衬底上，插入在正交偶极子和反射器之间，以实现低轮廓和带宽增强。最终样机的总尺寸为160 mm × 160 mm × 15.2 mm (1.8 GHz时0.96λo × 0.96λo × 0.09λo)，两个端口的电压驻波比< 2带宽> 29%，隔离度> 30 dB。此外，在两个端口，天线实现了> 8.5 dBi的增益和> 83%的整个工作带宽的辐射效率。
{"title":"A Low-Profile Base-Station Antenna","authors":"S. Ta, Minh Duc Nguyen, Khac Kiem Nguyen, Chien Dao-Ngoc","doi":"10.1109/CCE.2018.8465721","DOIUrl":"https://doi.org/10.1109/CCE.2018.8465721","url":null,"abstract":"In this paper, a low-profile, high-isolation, dual-polarized antenna using metasurface is proposed for use in the base stations of mobile communications. The antenna consists of two linear-polarized dipoles, which are arranged for horizontal and vertical polarizations. The dipole radiators are fed by two orthogonal printed baluns for the high isolation between the two ports. The metasurface, which is a square patch array periodically printed on a thin low-cost substrate, is inserted between the orthogonal dipoles and the reflector to achieve a low-profile and a bandwidth enhancement. The final prototype with an overall size of 160 mm × 160 mm × 15.2 mm (0.96λo × 0.96λo × 0.09λo at 1.8 GHz) yields a voltage standing wave ratio < 2 bandwidth of > 29% for the two ports and an isolation of > 30 dB. In addition, at both ports, the antenna achieves a gain of > 8.5 dBi and a radiation efficiency of > 83% across the operational bandwidth.","PeriodicalId":118716,"journal":{"name":"2018 IEEE Seventh International Conference on Communications and Electronics (ICCE)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124030998","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 : 2018-07-01DOI: 10.1109/CCE.2018.8465719
Thi-Thuy-Lien Nguyen, Tuan-Minh Pham
Network Functions Virtualization (NFV) has emerged as a paradigm for efficient, flexible and agile network function provisioning. In such NFV-based networks, ensuring network performance and cost efficiency is an important challenge to tackle when network traffic is steered through a chain of virtual network functions (VNF). In this work, we consider the dynamics of traffic demand in different time periods, and multipath routing for minimizing the routing cost in NFV. We focus primarily on optimization models and algorithms for finding a traffic steering solution that effectively splits a demand volume into several flows and selects appropriate links and nodes for these flows. We formulate the problem as a mixed linear integer programming model for obtaining an optimal solution taking into account the dynamics of service demand, multipath routing and service function chaining. For the large scale problem, we propose a heuristic algorithm to find an approximation solution. Particularly, our proposed model and algorithm allows a controller to update a link weight system for effectively steering traffic demand to appropriate nodes in a NFV infrastructure. The evaluation results show that our approach to traffic steering significantly improves a number of major performance metrics including the routing cost, the maximum link utilization, and the accepted demands. In addition, the approximation solution is very close to the optimal solution.
{"title":"Optimization Model and Algorithm for Dynamic Service-Aware Traffic Steering in Network Functions Virtualization","authors":"Thi-Thuy-Lien Nguyen, Tuan-Minh Pham","doi":"10.1109/CCE.2018.8465719","DOIUrl":"https://doi.org/10.1109/CCE.2018.8465719","url":null,"abstract":"Network Functions Virtualization (NFV) has emerged as a paradigm for efficient, flexible and agile network function provisioning. In such NFV-based networks, ensuring network performance and cost efficiency is an important challenge to tackle when network traffic is steered through a chain of virtual network functions (VNF). In this work, we consider the dynamics of traffic demand in different time periods, and multipath routing for minimizing the routing cost in NFV. We focus primarily on optimization models and algorithms for finding a traffic steering solution that effectively splits a demand volume into several flows and selects appropriate links and nodes for these flows. We formulate the problem as a mixed linear integer programming model for obtaining an optimal solution taking into account the dynamics of service demand, multipath routing and service function chaining. For the large scale problem, we propose a heuristic algorithm to find an approximation solution. Particularly, our proposed model and algorithm allows a controller to update a link weight system for effectively steering traffic demand to appropriate nodes in a NFV infrastructure. The evaluation results show that our approach to traffic steering significantly improves a number of major performance metrics including the routing cost, the maximum link utilization, and the accepted demands. In addition, the approximation solution is very close to the optimal solution.","PeriodicalId":118716,"journal":{"name":"2018 IEEE Seventh International Conference on Communications and Electronics (ICCE)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128129356","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 : 2018-07-01DOI: 10.1109/CCE.2018.8465748
The Khai Nguyen, T. Nguyen
In this paper, we consider the uplink (UL) of Cell-Free (CF) Massive MIMO system where a large number of service antennas act as access points (APs), serving distributed users. APs have multiple antennas, while each user has only one antenna. The target is to minimize users’ power consumption under imperfect channel state information (CSI) by optimally allocating the UL transmit power to each user, while maintaining the Quality of Service (QoS) for every user in the network. We investigate also the effect of assigning pilot sequences to the SE performance, when the system analysis is performed under maximum ratio combining. The results are derived by an offline training phase using Rayleigh fading channels. It has been indicated that joint pilot assignment and power allocation have a positive impact on the maximum network QoS value as well as overall power consumption of users in the system.
本文研究了无蜂窝(CF)大规模MIMO系统的上行链路(UL)，其中大量的业务天线作为接入点(ap)，为分布式用户提供服务。ap有多个天线，而每个用户只有一个天线。目标是在保证网络中每个用户的QoS (Quality of Service)的同时，将UL发送功率最优地分配给每个用户，从而在不完全信道状态信息(CSI)条件下使用户的功耗最小。我们还研究了当系统分析在最大比率组合下进行时，分配导频序列对SE性能的影响。结果是通过使用瑞利衰落信道的离线训练阶段得出的。研究表明，联合试点分配和功率分配对网络最大QoS值以及系统中用户的总体功耗都有积极影响。
{"title":"Performance of Assigning Pilot Sequences in Cell Free Massive MIMO under SINR Constraints","authors":"The Khai Nguyen, T. Nguyen","doi":"10.1109/CCE.2018.8465748","DOIUrl":"https://doi.org/10.1109/CCE.2018.8465748","url":null,"abstract":"In this paper, we consider the uplink (UL) of Cell-Free (CF) Massive MIMO system where a large number of service antennas act as access points (APs), serving distributed users. APs have multiple antennas, while each user has only one antenna. The target is to minimize users’ power consumption under imperfect channel state information (CSI) by optimally allocating the UL transmit power to each user, while maintaining the Quality of Service (QoS) for every user in the network. We investigate also the effect of assigning pilot sequences to the SE performance, when the system analysis is performed under maximum ratio combining. The results are derived by an offline training phase using Rayleigh fading channels. It has been indicated that joint pilot assignment and power allocation have a positive impact on the maximum network QoS value as well as overall power consumption of users in the system.","PeriodicalId":118716,"journal":{"name":"2018 IEEE Seventh International Conference on Communications and Electronics (ICCE)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134092068","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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