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2010 International Conference on Wireless Communications & Signal Processing (WCSP)最新文献

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Approach of linear phase differentiators and integrators 线性相位微分和积分器的方法
2010 International Conference on Wireless Communications & Signal Processing (WCSP) Pub Date : 2010-11-11 DOI: 10.1109/WCSP.2010.5633485
W. Lai, Lin-Chuan Tsai
{"title":"Approach of linear phase differentiators and integrators","authors":"W. Lai, Lin-Chuan Tsai","doi":"10.1109/WCSP.2010.5633485","DOIUrl":"https://doi.org/10.1109/WCSP.2010.5633485","url":null,"abstract":"In this paper, we describe wide-band differentiators and integrators the method of bilinear transformations which exhibit almost linear phases in the pass-band region. Formulations are employed to represent discrete-time infinite impulse response (IIR) processes of first-order differentiator and integrator. These formulations allow them to be eligible for wide-band applications. The new differentiator and integrator is approximately the linear phase. The maximum error of the new differentiator and is 9.5° occurring at 0.55 of the normalized frequency, and the maximum error of the new integrator is 9.5° occurring at 0.55 of the normalized frequency.","PeriodicalId":448094,"journal":{"name":"2010 International Conference on Wireless Communications & Signal Processing (WCSP)","volume":"134 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128625851","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
Improvement of ETX metric base on OLSR 基于OLSR的ETX度量改进
2010 International Conference on Wireless Communications & Signal Processing (WCSP) Pub Date : 2010-11-11 DOI: 10.1109/WCSP.2010.5632341
Yang Liu, Zhichao Mi, Jianfeng Zhang, X. Qu
{"title":"Improvement of ETX metric base on OLSR","authors":"Yang Liu, Zhichao Mi, Jianfeng Zhang, X. Qu","doi":"10.1109/WCSP.2010.5632341","DOIUrl":"https://doi.org/10.1109/WCSP.2010.5632341","url":null,"abstract":"This paper analyzes the problems in the wireless network caused by using minimum hop count as its routing metric, and discusses ETX metric which invented by De Couto to solve these problems and the shortage of it in mobile environment, then modifies it by relatively counting as to make it suitable for such environment. This paper uses the new ETX as a metric for the OLSR routing protocol, and proves that its capability parameters, like throughput and average packet retransmission count etc, are better than ETX proposed by De Couto in mobile environment by software simulation.","PeriodicalId":448094,"journal":{"name":"2010 International Conference on Wireless Communications & Signal Processing (WCSP)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129863240","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: 6
Cyclostationary spectrum sensing for Cognitive Radio and multiantenna systems 认知无线电和多天线系统的循环平稳频谱传感
2010 International Conference on Wireless Communications & Signal Processing (WCSP) Pub Date : 2010-11-11 DOI: 10.1109/WCSP.2010.5633559
V. Kontorovich, F. Ramos-Alarcón, Oscar Filio-Rodriguez, S. Primak
{"title":"Cyclostationary spectrum sensing for Cognitive Radio and multiantenna systems","authors":"V. Kontorovich, F. Ramos-Alarcón, Oscar Filio-Rodriguez, S. Primak","doi":"10.1109/WCSP.2010.5633559","DOIUrl":"https://doi.org/10.1109/WCSP.2010.5633559","url":null,"abstract":"In this paper it is shown that cyclostationary spectrum sensing for Cognitive Radio networks, applying multiple cyclic frequencies for single user detection can be interpreted in terms of optimal incoherent diversity addition for \"virtual diversity branches\" or SIMO radar. This approach allows proposing, by analogy to diversity combining, suboptimal algorithms which can provide near optimal characteristics for the Neyman-Pearson Test (NPT). The analysis is based on the Generalized Gaussian (Klovsky-Middleton) Channel Model, which allows obtaining the above mention NPT characteristics: probability of misdetection (PM) and probability of false alarm (Pfa) in the most general way. Some quasi-optimum algorithms such as energetic receiver and selection addition algorithm are analyzed and their comparison with the noise immunity properties (Receiver Operational Characteristics-ROC) of the optimum approach is provided as well.","PeriodicalId":448094,"journal":{"name":"2010 International Conference on Wireless Communications & Signal Processing (WCSP)","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130725243","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 novel beamspace eigen-filter algorithm for 2D Rake receiver 一种新的二维Rake接收机波束空间特征滤波算法
2010 International Conference on Wireless Communications & Signal Processing (WCSP) Pub Date : 2010-11-11 DOI: 10.1109/WCSP.2010.5633882
Yan Lin, Guangxin Yue
{"title":"A novel beamspace eigen-filter algorithm for 2D Rake receiver","authors":"Yan Lin, Guangxin Yue","doi":"10.1109/WCSP.2010.5633882","DOIUrl":"https://doi.org/10.1109/WCSP.2010.5633882","url":null,"abstract":"A novel beamspace eigen-fllter 2D Rake receiver for DS-CDMA communication system is proposed in this paper. The proposed algorithm's performance is very close to the optimal space-time algorithm and it can outperform the beamspace-frequency algorithm. Another advantage is that the proposed algorithm is computationally more efficient in comparing with the beamspace-frequency algorithm.","PeriodicalId":448094,"journal":{"name":"2010 International Conference on Wireless Communications & Signal Processing (WCSP)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130997652","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
A simulated method of modeling wireless channel based on CDL 一种基于CDL的无线信道建模仿真方法
2010 International Conference on Wireless Communications & Signal Processing (WCSP) Pub Date : 2010-11-11 DOI: 10.1109/WCSP.2010.5633447
Jinbao Zhang, Zaichen Zhang, Xiaoyan Wang, Z. Tan, Q. Guo
{"title":"A simulated method of modeling wireless channel based on CDL","authors":"Jinbao Zhang, Zaichen Zhang, Xiaoyan Wang, Z. Tan, Q. Guo","doi":"10.1109/WCSP.2010.5633447","DOIUrl":"https://doi.org/10.1109/WCSP.2010.5633447","url":null,"abstract":"Rapid development of wireless communications gives prominence to simulation. Simulated methods of modeling wireless channel are of significance to wireless communications simulation on both link and system levels. There have been quite a lot of theoretical models which have accurately described the characteristics of wireless channel. However when it comes to the realization of wireless channel in simulation, there seem no accurate enough methods and conclusions. Current simulated methods are mostly built up based on TDL, which is a common framework to model micro fading and mainly focused on micro fading. As to macro fading, Doppler-effect and polarization of electromagnetic wave, this method behaves not well enough, and other statistical approximations is indispensable, such as shadow fading, Doppler power spectrum density and so on. To the question existed, this paper proposes a simulated method to accurately model wireless channel under given wireless environment, on the basis of cluster delay line. This method is highlighted with comprehensive consideration of macro and micro fading, Doppler, multi-path and polarization effect. Analysis and simulation results on characteristics of wireless channel such as signal envelope, coherent time and bandwidth, validate the proposed model.","PeriodicalId":448094,"journal":{"name":"2010 International Conference on Wireless Communications & Signal Processing (WCSP)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129606633","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
Energy detection of narrowband signals in cognitive radio systems 认知无线电系统中窄带信号的能量检测
2010 International Conference on Wireless Communications & Signal Processing (WCSP) Pub Date : 2010-11-11 DOI: 10.1109/WCSP.2010.5633150
Yanxin Yan, Y. Gong
{"title":"Energy detection of narrowband signals in cognitive radio systems","authors":"Yanxin Yan, Y. Gong","doi":"10.1109/WCSP.2010.5633150","DOIUrl":"https://doi.org/10.1109/WCSP.2010.5633150","url":null,"abstract":"In this paper, we consider energy detection based spectrum sensing for narrowband signals in a wideband cognitive radio system using OFDM. The effect of fast Fourier transform (FFT) size on detecting narrowband signals is analyzed, and appropriate FFT size is suggested to improve the probability of detection. In order to reduce complexity, an improved spectrum sensing scheme is proposed to improve the detection probability without increasing the implementation complexity. Simulations are performed to verify the presented schemes.","PeriodicalId":448094,"journal":{"name":"2010 International Conference on Wireless Communications & Signal Processing (WCSP)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130475164","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: 15
An adaptive approach to reduce complexity of EBB in LTE downlink TDD systems 一种降低LTE下行TDD系统中EBB复杂度的自适应方法
2010 International Conference on Wireless Communications & Signal Processing (WCSP) Pub Date : 2010-11-11 DOI: 10.1109/WCSP.2010.5633369
Zhixun Zhou, Xiantao Cheng, Hongxuan Liu, Gang Wu
{"title":"An adaptive approach to reduce complexity of EBB in LTE downlink TDD systems","authors":"Zhixun Zhou, Xiantao Cheng, Hongxuan Liu, Gang Wu","doi":"10.1109/WCSP.2010.5633369","DOIUrl":"https://doi.org/10.1109/WCSP.2010.5633369","url":null,"abstract":"As one kind of multiple input multiple output (MIMO) techniques in the 3GPP Long Term Evolution (LTE) and LTE-advanced (LTE-A) systems, eigenvalue based beam-forming (EBB) can maximize the system capacity in single-user scenario. Traditionally, EBB algorithm often takes singular value decomposition (SVD) to the average channel matrix of each resource block (RB) or RB-group. This method is simple but very inflexible, and sometimes it may result in unnecessary high complexity. In this paper, we propose an adaptive approach that combines first order perturbation compensation (FOPC) with traditional SVD to get the beamforming vector or precoding matrix. It has been validated by simulations that our approach can significantly reduce the implementation complexity of EBB with slight performance loss.","PeriodicalId":448094,"journal":{"name":"2010 International Conference on Wireless Communications & Signal Processing (WCSP)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126566385","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
Modeling of the electromagnetic interference map generated by 3G systems inside small aircraft 小型飞机内3G系统产生的电磁干扰图建模
2010 International Conference on Wireless Communications & Signal Processing (WCSP) Pub Date : 2010-11-11 DOI: 10.1109/WCSP.2010.5633528
Clifford De Raffaele, C. J. Debono
{"title":"Modeling of the electromagnetic interference map generated by 3G systems inside small aircraft","authors":"Clifford De Raffaele, C. J. Debono","doi":"10.1109/WCSP.2010.5633528","DOIUrl":"https://doi.org/10.1109/WCSP.2010.5633528","url":null,"abstract":"The substantial increase in customer demand for office-like communication services during flights is pushing aircraft manufactures to implement wireless solutions inside aircraft. Nevertheless, aircraft safety is a paramount criterion for operators, thus the potential risks posed by such communication systems on aircraft equipment must be carefully assessed and respective countermeasures taken. In this work, we adopt a three-dimensional ray tracing method based on geometrical optics and combine it with electromagnetic field computation to model the interference generated by a 3G cellular system inside the cabin of a typical business jet. The model initially develops a propagation map of the electromagnetic (EM) radiation emitted by the Node B station inside the aircraft to determine the power incident on the receiving antennas of personal electronic devices (PEDs). This is used to establish the transmission power employed by each PED. Subsequently similar propagation maps are generated for each mobile device. All the radio space propagation maps are then vectorially combined to produce an EM interference map at the fuselage.","PeriodicalId":448094,"journal":{"name":"2010 International Conference on Wireless Communications & Signal Processing (WCSP)","volume":"142 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126901698","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
System info of multi-domain cognition in cognitive radio networks 认知无线电网络中多域认知的系统信息
2010 International Conference on Wireless Communications & Signal Processing (WCSP) Pub Date : 2010-11-11 DOI: 10.1109/WCSP.2010.5633635
Guoru Ding, Qi-hui Wu, Jinlong Wang, Yuping Gong
{"title":"System info of multi-domain cognition in cognitive radio networks","authors":"Guoru Ding, Qi-hui Wu, Jinlong Wang, Yuping Gong","doi":"10.1109/WCSP.2010.5633635","DOIUrl":"https://doi.org/10.1109/WCSP.2010.5633635","url":null,"abstract":"The environment cognition of cognitive radio networks (CRN) is extending from wireless domain (WD) to network domain (ND), user domain (UD) and policy domain (PD). In this paper, we propose three-layer system info of multi-domain cognition (MDC) with the characteristic of policy restriction and the capability of learning and reasoning. Especially, multi-domain local cognition (MDLC) layer performs the acquirement of mass multi-domain cognition information (CI). Integrative consideration of effective expression, efficient transfer and distributive processing, multi-domain cooperative cognition (MDCC) layer implements rational flow and fusion of CI and multi-domain initiative cognition (MDIC) layer effectively utilizes CI by prediction and reasoning. After interpreting the connotation of MDC, we also present cognition framework in space and the simple mathematic model of MDC. In addition, we present the research challenges ahead as well.","PeriodicalId":448094,"journal":{"name":"2010 International Conference on Wireless Communications & Signal Processing (WCSP)","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121441271","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
Large-scale fading model for mobile communications in disaster and salvage scenarios 灾害救援场景下移动通信的大规模衰落模型
2010 International Conference on Wireless Communications & Signal Processing (WCSP) Pub Date : 2010-11-11 DOI: 10.1109/WCSP.2010.5633059
Ling Chen, M. Loschonsky, L. Reindl
{"title":"Large-scale fading model for mobile communications in disaster and salvage scenarios","authors":"Ling Chen, M. Loschonsky, L. Reindl","doi":"10.1109/WCSP.2010.5633059","DOIUrl":"https://doi.org/10.1109/WCSP.2010.5633059","url":null,"abstract":"Within a running project, I-LOV, wireless communication channel model for mobile radio propagation in disaster and salvage scenarios is developed. This contribution focuses on a semi-empirical large-scale fading (LSF) model, which is able to estimate signal power loss between base station and mobile phone under debris. Due to multitude of diverse materials appearing in burying scenarios, the signal loss factor varies heavily depending on electromagnetic properties of involved materials. Additionally, highly variable shape and dimension of rubbles impact strongly the loss factor. Besides numerous LSF models investigated in urban environments, only a few are in ruins. This paper presents a novel modeling concept of LSF in catastrophe scenarios. The proposed LSF model handles the radio propagation way in two parts: outside ruins and through the ruins. Measurements have been conducted at GSM 900 and GSM 1800 bands in collapsed buildings of stratified rubbles, as well as in an avalanche scenario. The model predication fits the measured data well.","PeriodicalId":448094,"journal":{"name":"2010 International Conference on Wireless Communications & Signal Processing (WCSP)","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121498630","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: 17
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