2015 International Conference on Wireless Communications & Signal Processing (WCSP)最新文献_第2页

Energy-efficient secrecy precoding for general MIMOME wiretap channels 通用MIMOME窃听信道的节能保密预编码

2015 International Conference on Wireless Communications & Signal Processing (WCSP) Pub Date : 2015-12-03 DOI: 10.1109/WCSP.2015.7340971

Bing Fang, Zuping Qian, Wei Zhong, W. Shao

{"title":"Energy-efficient secrecy precoding for general MIMOME wiretap channels","authors":"Bing Fang, Zuping Qian, Wei Zhong, W. Shao","doi":"10.1109/WCSP.2015.7340971","DOIUrl":"https://doi.org/10.1109/WCSP.2015.7340971","url":null,"abstract":"In this paper, we study the energy-efficient secrecy precoding problem for a general multiple-input multiple-output multiple-eavesdropper (MIMOME) wiretap channel. The system model considered here consists of a common transmitter, a legitimate receiver, and multiple eavesdroppers, all mounted with multiple antennas. In order to improve the energy efficiency (EE) performance of the proposed system, an artificial noise (AN)-aided precoding scheme is adopted. Because the formulated EE maximization problem is of huge nonconvex complexity, we solve it by employing a two-tier optimization structure. Although the outer-tier optimization problem is quite simple and can be efficiently solved by the famous golden section searching method, the inner-tier optimization problem turns out to be nonconvex and cannot be easily solved. To solve it, we relax it to a secrecy rate maximization (SRM) problem, which naturally constitutes a difference convex (DC)-type programming problem and can be iteratively solved by employing a successive convex approximation (SCA) method. Numerical simulations are further provided to demonstrate the proposed algorithms. Results show that our algorithms can converge fast to a near-optimal solution.","PeriodicalId":164776,"journal":{"name":"2015 International Conference on Wireless Communications & Signal Processing (WCSP)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115031465","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: 3

An optimized design of SCMA codebook based on star-QAM signaling constellations 基于星- qam信令星座的SCMA码本优化设计

2015 International Conference on Wireless Communications & Signal Processing (WCSP) Pub Date : 2015-12-03 DOI: 10.1109/WCSP.2015.7341311

Lisu Yu, Xianfu Lei, P. Fan, Dageng Chen

引用次数: 95

Outage probability of two-way full-duplex amplify-forward relay systems with asymmetric traffic requirements 具有非对称流量要求的双向全双工放大转发中继系统的中断概率

2015 International Conference on Wireless Communications & Signal Processing (WCSP) Pub Date : 2015-12-03 DOI: 10.1109/WCSP.2015.7341083

Yafei Wang, Qianmin Jiang, Zhiyong Chen, Bin Xia

引用次数: 7

Robust coordination for multi-cell distributed antenna systems with selective transmission 具有选择性传输的多小区分布式天线系统的鲁棒协调

2015 International Conference on Wireless Communications & Signal Processing (WCSP) Pub Date : 2015-12-03 DOI: 10.1109/WCSP.2015.7341248

W. Feng, Rui Shi, N. Ge, Jianhua Lu

{"title":"Robust coordination for multi-cell distributed antenna systems with selective transmission","authors":"W. Feng, Rui Shi, N. Ge, Jianhua Lu","doi":"10.1109/WCSP.2015.7341248","DOIUrl":"https://doi.org/10.1109/WCSP.2015.7341248","url":null,"abstract":"Coordinated transmission is an effective way to deal with the inter-cell interference (ICI) problem in a multi-cell distributed antenna system (DAS). However, in a practical scenario, the inter-cell channel state information (CSI) is usually imperfect, consequently causing a significant performance degradation of coordinated transmission. In this paper, to tackle this difficulty, we propose a coordinated selective transmission scheme, which is robust to the inter-cell CSI uncertainty. Particularly, we consider a composite inter-cell CSI model that consists of perfect large-scale CSI and imperfect small-scale CSI. An accuracy parameter is used to indicate different degree of uncertainty of the small-scale CSI. We then formulate a coordinated antenna selection problem, which is a non-convex integer programming problem. Using the successive approximation method and the Geometric Programming tool, we propose an iterative solution to the problem. Simulation results show that the proposed coordinated selective transmission scheme provides a significant sum rate gain over the existing methods, since it is more robust to the inter-cell small-scale CSI error.","PeriodicalId":164776,"journal":{"name":"2015 International Conference on Wireless Communications & Signal Processing (WCSP)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123674617","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

Analysis of adjacent channel interference in heterogeneous cellular networks 异构蜂窝网络中相邻信道干扰分析

2015 International Conference on Wireless Communications & Signal Processing (WCSP) Pub Date : 2015-12-03 DOI: 10.1109/WCSP.2015.7341165

Min Zhang, Lin Bai, Chen Chen, Jinho Choi

引用次数: 3

Capacity for downlink massive MIMO MU-SCMA system 下行链路大规模MIMO MU-SCMA系统容量

2015 International Conference on Wireless Communications & Signal Processing (WCSP) Pub Date : 2015-12-03 DOI: 10.1109/WCSP.2015.7341100

Tingting Liu, Xinmin Li, Ling Qiu

{"title":"Capacity for downlink massive MIMO MU-SCMA system","authors":"Tingting Liu, Xinmin Li, Ling Qiu","doi":"10.1109/WCSP.2015.7341100","DOIUrl":"https://doi.org/10.1109/WCSP.2015.7341100","url":null,"abstract":"Sparse code multiple access (SCMA) is a new multiple access technique with reusing non-orthogonal code domain resource. It has massive connectivity serving a large number of users and improves spectral efficiency of radio access. SCMA directly maps the information bits of different users to sparse complex codewords selected from the predefined codebooks, and each codeword represents a transmission layer. SCMA can be combined with MIMO technique to further improve the spectral efficiency. This combined technique is called code-space-multiplexing (CSM) which is the extension of the spatial multiplexing. Under downlink massive MIMO MU-SCMA (massive-CSM) system, the base station, equipped with massive transmit antennas, transmits SCMA codewords for each user. In this paper, by applying random matrix theory, we derive an asymptotic equivalent (AE) of signal to interference plus noise ratio (SINR) as the number of transmit antennas approaches infinity. In addition, some asymptotic results of SINR for two special cases can be obtained in terms of large-scale fading coefficients, sparse parameter and the number of resource blocks. Simulation results show massive-CSM can improve the capacity of MU-SCMA system and has a substantial advantage in terms of higher sum rate performance compared with Massive MIMO MU-OFDMA system. As the number of transmit antennas increases, our analytic expression of SINR closely approaches the theoretical result.","PeriodicalId":164776,"journal":{"name":"2015 International Conference on Wireless Communications & Signal Processing (WCSP)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128098595","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: 20

Automatic digital modulation classification for ORS satellite relay communication ORS卫星中继通信的自动数字调制分类

2015 International Conference on Wireless Communications & Signal Processing (WCSP) Pub Date : 2015-12-03 DOI: 10.1109/WCSP.2015.7341053

Xinli Xiong, Jing Feng, Lei Jiang

{"title":"Automatic digital modulation classification for ORS satellite relay communication","authors":"Xinli Xiong, Jing Feng, Lei Jiang","doi":"10.1109/WCSP.2015.7341053","DOIUrl":"https://doi.org/10.1109/WCSP.2015.7341053","url":null,"abstract":"Automatic Modulation Classification (AMC) can be used in automatically identifying and classifying the modulation of communication devices. With the application of digital technique, AMC is developed towards higher frequency, which makes a lower probability of correct classification (PCC) at the conventional method. It is necessary for relay-communication to automatically classify the modulation of satellite. So, AMC plays an important part in heterogeneous satellite networking especially in Operationally Responsive Space (ORS). In order to enhance PCC in low Signal Noise Ratio (SNR) conditions, a novel method based on Radical Basis Function Neural Network (RBFNN) and Gravitational Search Algorithm (GSA) was presented in this paper. This method combined high-order cumulants with low-order statistics features, and supposed additive white Gaussian noise (AWGN) as the channel model. The classification performance of the typical RBFNN was optimized by GSA using information entropy changing to update the “agents” movement velocity, which expand the globe solution sets in exploration phase and escapes the local optimum in exploitation phase. Compared to existed methods, the proposed method does not require any previous knowledge of received signal. Simulation results show that the proposed method is more effective in low SNR conditions and improves the probability of correct classification.","PeriodicalId":164776,"journal":{"name":"2015 International Conference on Wireless Communications & Signal Processing (WCSP)","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132368046","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: 4

A hybrid indoor positioning system based on UWB and inertial navigation 基于超宽带和惯性导航的混合室内定位系统

2015 International Conference on Wireless Communications & Signal Processing (WCSP) Pub Date : 2015-12-03 DOI: 10.1109/WCSP.2015.7341240

Kai He, Yueyue Zhang, Yaping Zhu, Weiwei Xia, Z. Jia, Lianfeng Shen

引用次数: 9

Identification and mitigation of NLOS based on channel state information for indoor WiFi localization 基于信道状态信息的室内WiFi定位NLOS识别与缓解

2015 International Conference on Wireless Communications & Signal Processing (WCSP) Pub Date : 2015-12-03 DOI: 10.1109/WCSP.2015.7341172

Xiong Cai, Xiaohui Li, Ruiyang Yuan, Y. Hei

引用次数: 19

A routing policy based on time-varying graph for predictable delay tolerant networks 一种基于时变图的可预测容延迟网络路由策略

2015 International Conference on Wireless Communications & Signal Processing (WCSP) Pub Date : 2015-12-03 DOI: 10.1109/WCSP.2015.7341072

L. Lei, Hongyan Li

引用次数: 4