2019 11th International Conference on Wireless Communications and Signal Processing (WCSP)最新文献

An Economy-mode Framework for Task Offloading in Fog Computing Networks 雾计算网络中任务卸载的经济模式框架

2019 11th International Conference on Wireless Communications and Signal Processing (WCSP) Pub Date : 2019-10-01 DOI: 10.1109/WCSP.2019.8928050

Beibei Wang, Fei Shen, Xujie Li, F. Qin, Feng Yan, Siyuan Zhou

引用次数: 1

Ultra-broadband Polarization Rotator Design in Terahertz Region 太赫兹区域超宽带偏振旋转器设计

2019 11th International Conference on Wireless Communications and Signal Processing (WCSP) Pub Date : 2019-10-01 DOI: 10.1109/WCSP.2019.8928138

W. Hong, Xinlong Li, Jianfeng Zhu, Shufang Li, Tingxiao Cai, Huanhuan Lin, Hongjie Liu, Yanqing Wei

引用次数: 0

Spectrum Efficiency Optimization for Uplink Massive MIMO System with Imperfect Channel State Information 信道状态信息不完全的上行海量MIMO系统频谱效率优化

2019 11th International Conference on Wireless Communications and Signal Processing (WCSP) Pub Date : 2019-10-01 DOI: 10.1109/WCSP.2019.8927900

Yuheng Du, Xiangbin Yu, Xi Wang, Qiuming Zhu, Tao Liu

{"title":"Spectrum Efficiency Optimization for Uplink Massive MIMO System with Imperfect Channel State Information","authors":"Yuheng Du, Xiangbin Yu, Xi Wang, Qiuming Zhu, Tao Liu","doi":"10.1109/WCSP.2019.8927900","DOIUrl":"https://doi.org/10.1109/WCSP.2019.8927900","url":null,"abstract":"Based on imperfect channel state information (C-SI) available, the power allocation (PA) schemes for spectrum efficiency (SE) optimization in uplink massive MIMO systems with continuous-rate adaptive modulation (CAM) are studied. Conditioned on target BER, the SE of massive MIMO with CAM in the presence of imperfect CSI is derived. As a result, closed-form expression is attained. Using this result, subject to the maximum transmit power per user, a constrained non-concave optimization problem of PA to maximize the SE is formulated. A near-optimal PA scheme with the concave-convex procedure (CCCP) method is then developed, which offers nearly optimal performance as the exhaustive search scheme. This PA scheme has relatively high complexity since more iterations from CCCP method are required. For this reason, we introduce an optimized parameter to simplify the original optimization problem. With this parameter, the original non-concave problem is transformed into two concave subproblems. By solving these subproblems, a low-complexity suboptimal PA scheme is presented, and it can provide closed-form PA. Simulation results reveal that the developed two schemes are valid, the near-optimal PA scheme has almost the same SE as the optimal one with the exhaustive search method, but the complexity is lower than the latter. The iteration free suboptimal PA scheme has the SE close to that of near-optimal PA scheme but offers lower complexity. Meanwhile, the PA from suboptimal scheme can be used as an initial value of the near-optimal scheme to speed up the CCCP method.","PeriodicalId":108635,"journal":{"name":"2019 11th International Conference on Wireless Communications and Signal Processing (WCSP)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124405795","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

QoE-Driven Optimization for Video Services in Cache-Enabled Software-Defined HetNets 支持缓存的软件定义HetNets中视频业务的qos驱动优化

2019 11th International Conference on Wireless Communications and Signal Processing (WCSP) Pub Date : 2019-10-01 DOI: 10.1109/WCSP.2019.8927933

Chenkai Zou, Hanchen Lu, Jianwen Meng

{"title":"QoE-Driven Optimization for Video Services in Cache-Enabled Software-Defined HetNets","authors":"Chenkai Zou, Hanchen Lu, Jianwen Meng","doi":"10.1109/WCSP.2019.8927933","DOIUrl":"https://doi.org/10.1109/WCSP.2019.8927933","url":null,"abstract":"To cope with the exponential increment of traffic data, caching has been seen as a promising way to relieve backhaul bandwidth burden in the Heterogeneous Network (HetNet). The Software-Defined Network (SDN) architecture allows Macro Base Station (MBS) to have a global view of the whole network to better conduct the cache update strategy. In conventional caching strategies, power allocation and user association are neglected, which may result in insufficient power for a user and cache waste in a small-cell base station (SBS). Quality of Experience (QoE) cannot be improved without taking into account power allocation and user allocation. In this paper, we jointly optimize caching, power allocation and user association to maximize users' average QoE for video services. Under the constraints of caching capacity, limited power and single association, a mixed integer nonlinear programming (MINLP) problem is formulated. Power discretization has transformed this problem into a Discrete Monotone Optimization one, and we propose a Joint Caching-Power-and-Association (JCPA) algorithm to obtain the global optimal solution. Also, a random projection algorithm is proposed to compute the lower bound faster in the JCPA's iterations. Simulation results have demonstrated the effectiveness of the joint optimization strategy in this paper compared to popularity-based strategy and least recently used (LRU) strategy.","PeriodicalId":108635,"journal":{"name":"2019 11th International Conference on Wireless Communications and Signal Processing (WCSP)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117236275","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Decomposition Estimation for mmWave Channel Based on OMP with Rotation Operation 基于旋转运算的OMP毫米波信道分解估计

2019 11th International Conference on Wireless Communications and Signal Processing (WCSP) Pub Date : 2019-10-01 DOI: 10.1109/WCSP.2019.8928123

Jingyue Huang, Hao Wei, Ping Li, Jie Li, Dongming Wang

引用次数: 0

Similar User Assisted Mobility Prediction 类似的用户辅助移动预测

2019 11th International Conference on Wireless Communications and Signal Processing (WCSP) Pub Date : 2019-10-01 DOI: 10.1109/WCSP.2019.8928002

Lu Liu, Junyao Guo, Sihai Zhang, Jinkang Zhu

引用次数: 2

Deep Learning Aided Friendly Coexistence of WiFi and LTE in Unlicensed Bands 深度学习辅助WiFi和LTE在未授权频段的友好共存

2019 11th International Conference on Wireless Communications and Signal Processing (WCSP) Pub Date : 2019-10-01 DOI: 10.1109/WCSP.2019.8928141

Hao Gu, Yu Wang, Sheng Hong, Guan Gui

引用次数: 2

Robust Energy Efficiency Optimization for SWIPT-enabled Heterogeneous NOMA Networks 支持swift的异构NOMA网络的鲁棒能效优化

2019 11th International Conference on Wireless Communications and Signal Processing (WCSP) Pub Date : 2019-10-01 DOI: 10.1109/WCSP.2019.8927984

Gongguo Zhang, Cuixian Wu, Yongjun Xu, Zheng-qiang Wang

{"title":"Robust Energy Efficiency Optimization for SWIPT-enabled Heterogeneous NOMA Networks","authors":"Gongguo Zhang, Cuixian Wu, Yongjun Xu, Zheng-qiang Wang","doi":"10.1109/WCSP.2019.8927984","DOIUrl":"https://doi.org/10.1109/WCSP.2019.8927984","url":null,"abstract":"With the increasing requirements of high data rates and large connectivity, the application of the non-orthogonal multiple access (NOMA) technique in heterogeneous networks (HetNets) has become an inevitable trend for 5G communication systems in order to achieve good spectrum efficiency and system throughput. Moreover, the energy-constrained low-power nodes (e.g., small cell users) are the bottlenecks for restricting the overall network performance. To improve the system throughput and prolong the operation life of the energy-limited networks, a robust energy efficiency (EE) maximization problem is addressed for simultaneous wireless information and power transfer (SWIPT)-enabled heterogeneous NOMA networks. Considering the co-channel interference and the cross-tier interference, the resource allocation problem is formulated as a non-convex multivariable fractional programming problem under the time-switching energy harvesting mode. It is challenging to obtain the optimal solution. By using the min-max probability machine approach, the probabilistic interference constraint and the outage rate constraint are transformed into the convex ones. Based on the ellipsoidal uncertainty sets, the worst-case harvested energy is converted into a deterministic one. The obtained convex optimization problem is solved by CVX tools. Simulation results show the superiority of the proposed algorithm by comparing with the non-robust algorithm.","PeriodicalId":108635,"journal":{"name":"2019 11th International Conference on Wireless Communications and Signal Processing (WCSP)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123036769","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Data Recovery from Sub-Nyquist Sampled Signals: Fundamental Limit and Detection Algorithm 亚奈奎斯特采样信号的数据恢复:基本极限和检测算法

2019 11th International Conference on Wireless Communications and Signal Processing (WCSP) Pub Date : 2019-10-01 DOI: 10.1109/WCSP.2019.8927914

Xiqian Luo, Zhaoyang Zhang

{"title":"Data Recovery from Sub-Nyquist Sampled Signals: Fundamental Limit and Detection Algorithm","authors":"Xiqian Luo, Zhaoyang Zhang","doi":"10.1109/WCSP.2019.8927914","DOIUrl":"https://doi.org/10.1109/WCSP.2019.8927914","url":null,"abstract":"As widely known that Nyquist rate is sufficient to sample a bandlimited signal without information loss, sub-Nyquist rate may also suffice to sample and recover signals under certain circumstances. In this paper, we study the fundamental problem of recovering data sequence from a sub-Nyquist sampled linearly modulated baseband signal, in which the signal dimension is hardly to be reduced and the problem is underdetermined. First, we derive upper bounds of the normalized minimum Euclidean distance for different sub-Nyquist sampling schemes, which shows that, they are proportional to the sampling rate within the fundamental Mazo limit. Then by making use of the finite alphabet of transmitted symbols and the intrinsic interference structure of the sample sequence, we present an efficient time-variant Viterbi algorithm to recover data from the sub-Nyquist sampled sequence. The bit error rates (BER) under different sub-Nyquist sampling scenarios are simulated and compared with both their theoretical limits and its Nyquist sampling counterpart, which validates the excellent performance of the algorithm.","PeriodicalId":108635,"journal":{"name":"2019 11th International Conference on Wireless Communications and Signal Processing (WCSP)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114142449","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Pilot Spoofing Attack Detection and Downlink Precoding in Massive MIMO Systems 大规模MIMO系统中的导频欺骗攻击检测与下行预编码

2019 11th International Conference on Wireless Communications and Signal Processing (WCSP) Pub Date : 2019-10-01 DOI: 10.1109/WCSP.2019.8928068

Wei Wang, Zhisheng Yin, Feng Lyu, Huaqing Wu, Qi-hui Wu, X. Shen

引用次数: 1