2017 IEEE/CIC International Conference on Communications in China (ICCC)最新文献_第3页

Performance analysis of multi-carrier LAA and Wi-Fi coexistence in unlicensed spectrum 无授权频谱下多载波LAA和Wi-Fi共存的性能分析

2017 IEEE/CIC International Conference on Communications in China (ICCC) Pub Date : 2017-10-01 DOI: 10.1109/ICCChina.2017.8330467

Song Wang, Qimei Cui, Yu Gu

{"title":"Performance analysis of multi-carrier LAA and Wi-Fi coexistence in unlicensed spectrum","authors":"Song Wang, Qimei Cui, Yu Gu","doi":"10.1109/ICCChina.2017.8330467","DOIUrl":"https://doi.org/10.1109/ICCChina.2017.8330467","url":null,"abstract":"Licensed-Assisted Access (LAA) to unlicensed spectrum has been regarded as a promising technology to meet the exponential growth of traffic demands. Based on listen-before-talk (LBT), LAA can allow mobile operators to utilize unlicensed spectrum as supplementary carriers for data offloading and also can guarantee fair coexistence with other access technologies (e.g., Wi-Fi) in unlicensed band. To obtain more available bandwidth and achieve higher data transmission rate, multiple unlicensed carriers could be aggregated by using multi-carrier LBT. However, multi-carrier LBT mechanism cannot always enhance system performance when the stations including Wi-Fi APs and LAA stations are densely deployed. This is because that the dense deployment of stations will lead to increasing the collision probability and decreasing the probability of successful transmission. To reveal the fundamental characteristics of multi-carrier LAA mechanism, in this paper, we first analyze the performance of multi-carrier LBT mechanism. Then, we propose a low-complexity algorithm for multi-carrier LBT operations to provide better system performance under saturation traffic scenario. Furthermore, the simulation results verifies our theoretical analysis, and the proposed algorithm can further enhance the system performance.","PeriodicalId":418396,"journal":{"name":"2017 IEEE/CIC International Conference on Communications in China (ICCC)","volume":"140 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132013301","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

Outage performance analysis of underlay cognitive DF relaying network with SWIPT in Nakagami-m fading environment 中川衰落环境下SWIPT底层认知DF中继网络的中断性能分析

2017 IEEE/CIC International Conference on Communications in China (ICCC) Pub Date : 2017-10-01 DOI: 10.1109/ICCChina.2017.8330370

Yiyun Cheng, Jing Yang, Jie Ding, K. Peppas, P. Mathiopoulos

引用次数: 1

A hybrid relay node selection strategy for VANET routing VANET路由的混合中继节点选择策略

2017 IEEE/CIC International Conference on Communications in China (ICCC) Pub Date : 2017-10-01 DOI: 10.1109/ICCChina.2017.8330400

Kun Liu, K. Niu

引用次数: 8

Sensitivity-based adaptive particle filter for geomagnetic indoor localization 基于灵敏度的自适应粒子滤波地磁室内定位

2017 IEEE/CIC International Conference on Communications in China (ICCC) Pub Date : 2017-10-01 DOI: 10.1109/ICCChina.2017.8330331

Menghan Zheng, Yubin Zhao, Yueshun He, Cheng-Zhong Xu

引用次数: 2

Optimized signal-space alignment for physical-layer network coding over distributed MIMO system 分布式MIMO系统中物理层网络编码的优化信号空间对准

2017 IEEE/CIC International Conference on Communications in China (ICCC) Pub Date : 2017-10-01 DOI: 10.1109/ICCChina.2017.8330428

Hai Cheng, Xiaojun Yuan, Tao Yang

引用次数: 0

Group buying based on social aware in D2D networks: A game theoretic approach 基于社会意识的D2D网络团购:一种博弈论方法

2017 IEEE/CIC International Conference on Communications in China (ICCC) Pub Date : 2017-10-01 DOI: 10.1109/ICCChina.2017.8330347

Yuli Zhang, Yuhua Xu, Qi-hui Wu

引用次数: 7

A non-stationary MIMO channel model for street corner scenarios considering velocity variations of the mobile station and scatterers 考虑移动台和散射体速度变化的街角非平稳MIMO信道模型

2017 IEEE/CIC International Conference on Communications in China (ICCC) Pub Date : 2017-10-01 DOI: 10.1109/ICCChina.2017.8330450

Ji Bian, Yu Liu, Chengxiang Wang, Jian Sun, Wensheng Zhang, Minggao Zhang

{"title":"A non-stationary MIMO channel model for street corner scenarios considering velocity variations of the mobile station and scatterers","authors":"Ji Bian, Yu Liu, Chengxiang Wang, Jian Sun, Wensheng Zhang, Minggao Zhang","doi":"10.1109/ICCChina.2017.8330450","DOIUrl":"https://doi.org/10.1109/ICCChina.2017.8330450","url":null,"abstract":"Most channel models in the literature assume that the scatterers are fixed and the mobile station (MS) moves with a constant speed in a given direction. However, in realistic propagation environments, both the scatterers and the MS can be moving, and the velocities of the scatterers and the MS can change with time. In this paper, we develop a non-stationary multiple-input multiple-output (MIMO) channel model for street corner scenarios. The proposed channel model takes into account both fixed and moving scatterers. Velocity variations, including speed and movement direction, of the MS and moving scatterers are considered. Analytical solutions of spatial cross-correlation function (CCF), temporal autocorrelation function (ACF), and Wigner-Ville spectrum are derived and analyzed. Moreover, the impacts of velocity variations on the statistical properties of the proposed model are investigated. The proposed channel model is illuminating for future vehicle-to-infrastructure (V2I) and vehicle-to-vehicle (V2V) channel modeling.","PeriodicalId":418396,"journal":{"name":"2017 IEEE/CIC International Conference on Communications in China (ICCC)","volume":"101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131736442","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

Waveform design and processing in OFDM based radar-communication integrated systems 基于OFDM的雷达通信综合系统的波形设计与处理

2017 IEEE/CIC International Conference on Communications in China (ICCC) Pub Date : 2017-10-01 DOI: 10.1109/ICCChina.2017.8330462

Xuanxuan Tian, Tingting Zhang, Qinyu Zhang, Zhaohui Song

引用次数: 4

Robust design of hybrid multicast beamforming with phase error in mmWave systems 毫米波系统中相位误差混合组播波束形成的鲁棒设计

2017 IEEE/CIC International Conference on Communications in China (ICCC) Pub Date : 2017-10-01 DOI: 10.1109/ICCChina.2017.8330329

Jingyue Huang, Ziming Cheng, M. Tao

{"title":"Robust design of hybrid multicast beamforming with phase error in mmWave systems","authors":"Jingyue Huang, Ziming Cheng, M. Tao","doi":"10.1109/ICCChina.2017.8330329","DOIUrl":"https://doi.org/10.1109/ICCChina.2017.8330329","url":null,"abstract":"This paper studies the robust beamforming design for multi-group multicast transmission with a hybrid analog and digital structure in millimeter wave (mmWave) communication systems. Unlike the conventional additive error model, we consider a novel multiplicative phase error model which is more suitable for capturing the channel uncertainty in mmWave systems. We adopt a partially-connected hybrid structure where each radio frequency (RF) chain is connected to an exclusive subset of antenna elements at the base station. The robust design problem is formulated to minimize the total transmit power while satisfying the outage constraint for each user's signal-to-interference-plus-noise ratio (SINR). We first utilize the alternating minimization method to optimize the analog and digital beamformers alternatively. Each of these two subproblems is then solved approximately by using the second-order Taylor expansion together with the Bernstein-type inequality. Simulation results show that the approximation is quite safe and the outage constraint can be well satisfied. It is also shown that the power performance of the proposed robust design is within 1dB close to the ideal case when the standard derivation of the channel phase error is within 5.7°.","PeriodicalId":418396,"journal":{"name":"2017 IEEE/CIC International Conference on Communications in China (ICCC)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131225200","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

Fully photonics-based random number generators 完全基于光子的随机数生成器

2017 IEEE/CIC International Conference on Communications in China (ICCC) Pub Date : 2017-10-01 DOI: 10.1109/ICCChina.2017.8330364

Pu Li

{"title":"Fully photonics-based random number generators","authors":"Pu Li","doi":"10.1109/ICCChina.2017.8330364","DOIUrl":"https://doi.org/10.1109/ICCChina.2017.8330364","url":null,"abstract":"Real-time and ultrafast random number generators (RNGs) based on physical randomness sources are of paramount importance for cryptography and secure communications, where they are used as cryptographic keys to protect the privacy of data transmission. Since 2008, laser chaos has been viewed as the most promising source of randomness for fast RNGs because of its high bandwidth and large fluctuation. However, most of physical RNGs based on laser chaos did their random number extraction in the electrical domain, and thus their real-time rates suffered from the limitation of electronic bottleneck. Combing the chaotic laser with photonic signal processing techniques, we proposed and developed an innovative real-time methodology for ultrafast physical RNGs. Different with previous reports on RNGs, our fully photonic method do the random number extraction in the optical domain, so it efficiently circumvents the electronic bottleneck and has the potential to reach a real-time rate at the level of Tb/s. In this paper, we review our representative works on this topic of fully photonics based physical RNGs and some possible development orientations in the future are discussed.","PeriodicalId":418396,"journal":{"name":"2017 IEEE/CIC International Conference on Communications in China (ICCC)","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133484817","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: 0