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

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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
An improved variable length coding scheme using structured LDPC codes 采用结构化LDPC码的改进变长编码方案
2010 International Conference on Wireless Communications & Signal Processing (WCSP) Pub Date : 2010-11-11 DOI: 10.1109/WCSP.2010.5633982
Ming Jiang, Chen Wang, Yuan Zhang, Chunming Zhao
{"title":"An improved variable length coding scheme using structured LDPC codes","authors":"Ming Jiang, Chen Wang, Yuan Zhang, Chunming Zhao","doi":"10.1109/WCSP.2010.5633982","DOIUrl":"https://doi.org/10.1109/WCSP.2010.5633982","url":null,"abstract":"This paper proposes an improved coding scheme for various transmission lengths by combining shortening and puncturing with the conventional lifting method. Considering both of cycle conditions and ACE spectrum, we design the base-matrix in the framework of PEG construction. Only one base-matrix is required to support a wide rage of coding lengths for our proposed scheme, where the lifting factors are set in non-uniformly distributed values. The transmission configurations with arbitrary lengths within the coding range can be achieved by shortening and puncturing. Moreover, our proposed scheme provides better error performance than the traditional structured LDPC codes lifted by many different factors, when the shortening and puncturing patters are optimally selected by numerical methods.","PeriodicalId":448094,"journal":{"name":"2010 International Conference on Wireless Communications & Signal Processing (WCSP)","volume":"30 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":"126311072","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
Real-time perceptual tempo estimation for music signal based on envelope autocorrelation 基于包络自相关的音乐信号实时感知节奏估计
2010 International Conference on Wireless Communications & Signal Processing (WCSP) Pub Date : 2010-11-11 DOI: 10.1109/WCSP.2010.5633730
Jianling Hu
{"title":"Real-time perceptual tempo estimation for music signal based on envelope autocorrelation","authors":"Jianling Hu","doi":"10.1109/WCSP.2010.5633730","DOIUrl":"https://doi.org/10.1109/WCSP.2010.5633730","url":null,"abstract":"Tempo and beats are very important elements in the perceptual music. This paper proposes a real-time perceptual tempo estimation algorithm, which calculates the envelope autocorrelation of the music signals firstly, and then a weighted tempo function based on envelope autocorrelation is constructed to estimate the music's perceptual tempo. The weighted tempo function is computed according to the peak amplitudes and positions of the envelope autocorrelation, which can demonstrate the real-time tempo information of the music signal, and its statistics can be used to represent the rhythm of the whole piece of music. Our experiment results show that the proposed weighted tempo function is highly related to the sense of auditory rhythm, and is capable of describing the music tempo changes at real-time.","PeriodicalId":448094,"journal":{"name":"2010 International Conference on Wireless Communications & Signal Processing (WCSP)","volume":"199 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":"121437207","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
Group mobility in 6LoWPAN-based WSN 基于6lowpan的无线传感器网络中的群体移动性
2010 International Conference on Wireless Communications & Signal Processing (WCSP) Pub Date : 2010-11-11 DOI: 10.1109/WCSP.2010.5633536
Rong Chai, Ya-Lai Zhao, Qianbin Chen, Tao Dong, Wei-Guang Zhou
{"title":"Group mobility in 6LoWPAN-based WSN","authors":"Rong Chai, Ya-Lai Zhao, Qianbin Chen, Tao Dong, Wei-Guang Zhou","doi":"10.1109/WCSP.2010.5633536","DOIUrl":"https://doi.org/10.1109/WCSP.2010.5633536","url":null,"abstract":"Group mobility in wireless sensor network (WSN) is of particular importance in many practical application scenarios. In this paper, the group mobility management in IPv6 over Low power Wireless Personal Area Networks (6LoWPAN) based WSN is considered and the application of network mobility (NEMO) protocol to support group mobility in WSN is discussed. A new network architecture supporting the integration of NEMO and 6LoWPAN-based WSN is proposed, the group mobility management mechanism and the corresponding signaling flow are discussed. Simulation results demonstrate that comparing to MIPv6, the application of NEMO protocol in 6LoWPAN reduces both the handoff latency and the energy consumption of sensor node.","PeriodicalId":448094,"journal":{"name":"2010 International Conference on Wireless Communications & Signal Processing (WCSP)","volume":"82 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":"127875502","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: 21
Opportunistic cooperative transmission utilizing neighboring cluster head in clustered wireless sensor networks 集群无线传感器网络中利用相邻簇头的机会协同传输
2010 International Conference on Wireless Communications & Signal Processing (WCSP) Pub Date : 2010-11-11 DOI: 10.1109/WCSP.2010.5633640
Xianming Chen, Yueming Cai, Chunxiao Cai
{"title":"Opportunistic cooperative transmission utilizing neighboring cluster head in clustered wireless sensor networks","authors":"Xianming Chen, Yueming Cai, Chunxiao Cai","doi":"10.1109/WCSP.2010.5633640","DOIUrl":"https://doi.org/10.1109/WCSP.2010.5633640","url":null,"abstract":"In this paper, we study the opportunistic cooperative data transmissions based on selective single neighboring cluster head (NCH) relay in clustered wireless sensor networks (WSNs). We propose an opportunistic cooperative data transmission scheme by NCHs and analyze the symbol error rate performance of decode-and-forward (DF) cooperative protocol over Rayleigh fading channels. In our scheme, the source CH selects a \"best\" NCH as candidate relay and decides whether or not using cooperative transmission according to the CSL Simulation results show that the theoretical results match the simulation results perfectly and the scheme can obtain diversity gains and enhance energy efficiency.","PeriodicalId":448094,"journal":{"name":"2010 International Conference on Wireless Communications & Signal Processing (WCSP)","volume":"13 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":"122201363","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
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
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
Analysis of cognitive radio spectrum access with finite primary users and infinite secondary users 有限主用户和无限次用户的认知无线电频谱接入分析
2010 International Conference on Wireless Communications & Signal Processing (WCSP) Pub Date : 2010-11-11 DOI: 10.1109/WCSP.2010.5633740
Qiming Tian, Chuan Ma, Guanding Yu, Aiping Huang
{"title":"Analysis of cognitive radio spectrum access with finite primary users and infinite secondary users","authors":"Qiming Tian, Chuan Ma, Guanding Yu, Aiping Huang","doi":"10.1109/WCSP.2010.5633740","DOIUrl":"https://doi.org/10.1109/WCSP.2010.5633740","url":null,"abstract":"In the cognitive radio networks, the users' spectrum access behavior determines the system capacity and spectrum utilization. There are three classical schemes for cognitive radio spectrum access: the random channel assignment, the reservation based assignment and the non-random channel assignment. In this paper, we study the performance of these schemes in a new scenario: a cognitive radio network with finite primary users and infinite secondary users. We model the users' behavior in these schemes by Markov chains. Moreover, the blocking, transition and dropping probabilities of the secondary users based on the user connection rate are derived as the performance metrics. Furthermore, we evaluate the secondary system capacity of these schemes. Numerical results show that the random and non-random channel assignments can get the lowest blocking probability, the reservation based assignment can get the lowest dropping probability, and the non-random channel assignment can provide the most system capacity and avoid the channel handoff for the secondary users.","PeriodicalId":448094,"journal":{"name":"2010 International Conference on Wireless Communications & Signal Processing (WCSP)","volume":"14 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":"116915323","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: 10
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