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2014 Sixth International Conference on Wireless Communications and Signal Processing (WCSP)最新文献

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Compressed sensing recovery of multi-view video sequences by targeted database 基于目标数据库的多视点视频序列压缩感知恢复
2014 Sixth International Conference on Wireless Communications and Signal Processing (WCSP) Pub Date : 2014-12-22 DOI: 10.1109/WCSP.2014.6992202
Yong You, B. Liu, Chang Wen Chen
{"title":"Compressed sensing recovery of multi-view video sequences by targeted database","authors":"Yong You, B. Liu, Chang Wen Chen","doi":"10.1109/WCSP.2014.6992202","DOIUrl":"https://doi.org/10.1109/WCSP.2014.6992202","url":null,"abstract":"Compressed sensing (CS) is a technique that enables signal reconstruction at sub-Nyquist rate and has been widely used for fast reconstruction of multi-view video sequences (MVS) in the surveillance application. In this paper, we propose compressed-sensing recovery of MVS exploiting the model of structural group sparse representation (SGSR) along with a targeted database. SGSR groups similar patches together coupled with learning the adaptive basis from the similar groups, which gets sparser representation and thereby performs better in CS recovery. A targeted database can be easily obtained from the MVS due to their abundant prior information and the database can help us obtain more accurate similar patches, which further improve the performance with SGSR. Considering images as compressible signals rather than sparse signals, we design a filtering to retain the details of images. Simulation results show that the proposed algorithm outperforms existing reconstruction algorithms.","PeriodicalId":412971,"journal":{"name":"2014 Sixth International Conference on Wireless Communications and Signal Processing (WCSP)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126628349","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
Adaptive and distributed homology computation with application to large scale sensor networks 自适应分布式同调计算及其在大型传感器网络中的应用
2014 Sixth International Conference on Wireless Communications and Signal Processing (WCSP) Pub Date : 2014-12-22 DOI: 10.1109/WCSP.2014.6992039
Mengyi Zhang, A. Goupil, M. Colas, G. Gelle
{"title":"Adaptive and distributed homology computation with application to large scale sensor networks","authors":"Mengyi Zhang, A. Goupil, M. Colas, G. Gelle","doi":"10.1109/WCSP.2014.6992039","DOIUrl":"https://doi.org/10.1109/WCSP.2014.6992039","url":null,"abstract":"The homology groups provide useful information about a space. In several applications, including sensor networks, a combinatorial space is built to reflect the data and their relations about a specific topic to be analyzed. Hence the computation of the homology groups is of prime interest. However, the combinatorial space may vary and the computation of its homology groups becomes more difficult. This paper proposes an adaptive algorithm which updates incrementally the homology groups, and because it uses mostly small local computations, it is inherently well adapted to large-scale network. In the second part of the paper, the algorithm is developed and applied to the sensing coverage problem in a sensor networks. Because of its structure, the algorithm is inherently distributed.","PeriodicalId":412971,"journal":{"name":"2014 Sixth International Conference on Wireless Communications and Signal Processing (WCSP)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126072883","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
Random beamforming based on homogeneous feedback threshold and O(1) feedback constraint for multi-cell systems 基于均匀反馈阈值和O(1)反馈约束的多小区系统随机波束形成
2014 Sixth International Conference on Wireless Communications and Signal Processing (WCSP) Pub Date : 2014-12-22 DOI: 10.1109/WCSP.2014.6992010
Xingwang Chen, Xiaodong Xu, XingZheng Kan, Xuchu Dai
{"title":"Random beamforming based on homogeneous feedback threshold and O(1) feedback constraint for multi-cell systems","authors":"Xingwang Chen, Xiaodong Xu, XingZheng Kan, Xuchu Dai","doi":"10.1109/WCSP.2014.6992010","DOIUrl":"https://doi.org/10.1109/WCSP.2014.6992010","url":null,"abstract":"In multiple-input single-output (MISO) multi-cell systems, the problem of maximizing downlink sum-rate with random beamforming (RBF) is investigated under O(1) feedback constraint about the average number of feedback users. A sufficient condition is first analyzed to guarantee the single-cell sum-rate as a Schur-concave function, which leads to the optimality of solving this problem by using the homogenous feedback threshold (HFT) policy. Then a new multi-cell RBF algorithm is proposed based on the HFT policy, namely HFT-MRBF in this paper, where an optimal HFT is also derived according to the number of expected feedback users. Finally, various numerical examples are presented to validate the efficiency of the proposed algorithm and the analytical results.","PeriodicalId":412971,"journal":{"name":"2014 Sixth International Conference on Wireless Communications and Signal Processing (WCSP)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125140059","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
Outage and capacity of heterogeneous cellular networks with intra-tier dependence 层内依赖异构蜂窝网络的中断和容量
2014 Sixth International Conference on Wireless Communications and Signal Processing (WCSP) Pub Date : 2014-12-22 DOI: 10.1109/WCSP.2014.6992040
Na Deng, Wuyang Zhou, M. Haenggi
{"title":"Outage and capacity of heterogeneous cellular networks with intra-tier dependence","authors":"Na Deng, Wuyang Zhou, M. Haenggi","doi":"10.1109/WCSP.2014.6992040","DOIUrl":"https://doi.org/10.1109/WCSP.2014.6992040","url":null,"abstract":"In this paper, we propose a two-tier heterogeneous cellular network (HCN) model with intra-tier dependence, where the macro base stations (MBSs) and the pico base stations (PBSs) follow a Poisson point process (PPP) and a Matern cluster process (MCP), respectively. Due to the high spatial fluctuations of the traffic demand, the users are modeled as a Cox process. Conditioning on a fixed distance between a user equipment (UE) and its nearest serving BS, exact calculations of the interference and the outage probability are derived. The per-user capacity and the area spectral efficiency are also analyzed. The results show that the model with intra-tier dependence appears closer to the real deployment than the extreme with the complete randomness (the PPP). An important conclusion is that both the per-user capacity and the area spectral efficiency improve with smaller cells, but outage does not.","PeriodicalId":412971,"journal":{"name":"2014 Sixth International Conference on Wireless Communications and Signal Processing (WCSP)","volume":"230 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130116960","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
Facing the signaling storm: A method with stochastic concept 面对信号风暴:一种具有随机概念的方法
2014 Sixth International Conference on Wireless Communications and Signal Processing (WCSP) Pub Date : 2014-12-22 DOI: 10.1109/WCSP.2014.6992173
Hong Zhang, Kaiping Xue, P. Hong
{"title":"Facing the signaling storm: A method with stochastic concept","authors":"Hong Zhang, Kaiping Xue, P. Hong","doi":"10.1109/WCSP.2014.6992173","DOIUrl":"https://doi.org/10.1109/WCSP.2014.6992173","url":null,"abstract":"To keep “Always-on”, terminals contact with remote servers by sending the keep-alive messages (or heartbeat messages). Any message in data plan can be sent if and only if the RRC (Radio Resource Control) connection is built. Keep-alive messages are transmitted periodically, which leads to periodic establishment of RRC connections in some cases. High frequency of state transition may induce heavy burden in control channel in both UMTS and LTE network. Besides, it may also induce low efficiency in data channel in UMTS network. This paper presents a novel scheme to deal with these problems. Two new concepts, establishment probability “p” and “Rejected” state, are introduced to reduce the frequency of RRC connection establishment. Hence, the load in channels, especially in control channel, can be reduced to a low level. An analysis is developed based on queuing theory for the scheme and the performance is verified with simulations.","PeriodicalId":412971,"journal":{"name":"2014 Sixth International Conference on Wireless Communications and Signal Processing (WCSP)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131181287","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
Quality of experience modeling and fair scheduling for instant messaging service 即时消息服务的体验建模质量和公平调度
2014 Sixth International Conference on Wireless Communications and Signal Processing (WCSP) Pub Date : 2014-12-22 DOI: 10.1109/WCSP.2014.6992088
Xiaofeng Xin, Wei Wang, Aiping Huang, Hangguan Shan
{"title":"Quality of experience modeling and fair scheduling for instant messaging service","authors":"Xiaofeng Xin, Wei Wang, Aiping Huang, Hangguan Shan","doi":"10.1109/WCSP.2014.6992088","DOIUrl":"https://doi.org/10.1109/WCSP.2014.6992088","url":null,"abstract":"Instant Messaging (IM) service has drawn growing attention in current wireless networks. However, the Quality of Experience (QoE) of IM service users are instable, since the IM service is not served with dedicated channel or guaranteed bandwidth. In this paper, we adopt a Representative Service (RS) based QoE model for IM service, and propose a scheduling algorithm to provide fair QoE to IM service users. In the QoE model, the subservice that a user is currently focusing on is defined as the RS and the quality of RS, Representative Service Quality (RSQ), is considered as the QoE of an IM service user. In our scheduling algorithm, RS is estimated when several subservices are launched simultaneously, and resource allocation is done accordingly to avoid the QoE degradation due to resource insufficiency. Simulation results validate the rationality and effectiveness of the proposed algorithm, show that it outperforms classical fair scheduling algorithms.","PeriodicalId":412971,"journal":{"name":"2014 Sixth International Conference on Wireless Communications and Signal Processing (WCSP)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127691984","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
Queuing theory based spectrum allocation in cognitive radio networks 基于排队论的认知无线电网络频谱分配
2014 Sixth International Conference on Wireless Communications and Signal Processing (WCSP) Pub Date : 2014-12-22 DOI: 10.1109/WCSP.2014.6992064
Xinlin Huang, Xiang Wu, Jun Wu, Yuan Xu, Min Wang
{"title":"Queuing theory based spectrum allocation in cognitive radio networks","authors":"Xinlin Huang, Xiang Wu, Jun Wu, Yuan Xu, Min Wang","doi":"10.1109/WCSP.2014.6992064","DOIUrl":"https://doi.org/10.1109/WCSP.2014.6992064","url":null,"abstract":"In cognitive radio network (CRN), the utilization of wireless spectrum can be dramatically improved with the secondary user (SU) opportunistically access the licensed channels. With the help of spectrum sensing technology, the SU can dynamically access a large number of spectrum holes. However, how to allocate the spectrum holes between SUs becomes a thorny problem. The utilization of proper allocation scheme not only reduces the transmission delay of SUs, but also increases the throughput of the system. In this paper, we focus on queuing theory based spectrum allocation schemes in CRN, and discuss two useful queue models. At last, we propose a novel spectrum allocation scheme based on M/M/c, and present some new ideas.","PeriodicalId":412971,"journal":{"name":"2014 Sixth International Conference on Wireless Communications and Signal Processing (WCSP)","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132685941","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
Distributed coalition formation algorithms for cooperative broadcast networks with SWIPT 基于SWIPT的协作广播网络分布式联盟形成算法
2014 Sixth International Conference on Wireless Communications and Signal Processing (WCSP) Pub Date : 2014-12-22 DOI: 10.1109/WCSP.2014.6992052
Wei Chen, Mai Xu, Yue Tao, Z. Ding, Zulin Wang
{"title":"Distributed coalition formation algorithms for cooperative broadcast networks with SWIPT","authors":"Wei Chen, Mai Xu, Yue Tao, Z. Ding, Zulin Wang","doi":"10.1109/WCSP.2014.6992052","DOIUrl":"https://doi.org/10.1109/WCSP.2014.6992052","url":null,"abstract":"This paper addresses the application of coalitional game theory to cooperative broadcast networks with simultaneous wireless information and power transfer (SWIPT). To improve the reception reliability of destinations with poor channel conditions, we first divide destinations in the network into two types. The first type, Type I, refers to the destinations with the capability of successful decoding. They will help other users by first performing SWIPT and then relaying the source messages with the harvested energy. The second type of nodes, Type II, have poor connections to the source and hence compete to obtain help from Type I destinations. In order to maximize the data transmission rate of Type II destinations in a distributed manner, we model the cooperative scenario as a coalitional game and propose two coalition formation approaches with different payoff functions. One payoff function is based on how much help a destination can contribute or receive. The other payoff function considers the targeted data rate and ensures much better fairness among destinations. Finally, we propose a distributed coalition formation algorithm where destinations decide individually which coalition to join. Simulation results show that the proposed two cooperative schemes outperform the non-cooperative scheme, and the cooperative scheme II performs better than the cooperative scheme I as expected.","PeriodicalId":412971,"journal":{"name":"2014 Sixth International Conference on Wireless Communications and Signal Processing (WCSP)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133708026","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
Satellite radio interfaces for IMT-advanced system 用于imt先进系统的卫星无线电接口
2014 Sixth International Conference on Wireless Communications and Signal Processing (WCSP) Pub Date : 2014-12-22 DOI: 10.1109/WCSP.2014.6992097
Sooyoung Kim, H. Kim, K. Kang, D. Chang
{"title":"Satellite radio interfaces for IMT-advanced system","authors":"Sooyoung Kim, H. Kim, K. Kang, D. Chang","doi":"10.1109/WCSP.2014.6992097","DOIUrl":"https://doi.org/10.1109/WCSP.2014.6992097","url":null,"abstract":"Radio interfaces of satellite component of the IMT-Advanced system were recently developed by International Telecommunication Union - Radiocommunication (ITU-R), and they were specified in the Recommendation ITU-R M.2047. The set of techniques specified in the Recommendation can be used to provide high quality mobile satellite services with efficient spectrum utilization, and the candidate services will include multimedia broadband services to handheld or portable terminals and public protection and disaster relief services. This paper presents a brief background on the standardization procedure and describes the technical characteristics of the satellite radio interfaces specified in the ITU-R recommendation.","PeriodicalId":412971,"journal":{"name":"2014 Sixth International Conference on Wireless Communications and Signal Processing (WCSP)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114202652","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
Preamble-based channel estimation methods with high spectral efficiency for pulse shaping OFDM/OQAM systems 脉冲整形OFDM/OQAM系统中基于前导的高频谱效率信道估计方法
2014 Sixth International Conference on Wireless Communications and Signal Processing (WCSP) Pub Date : 2014-12-22 DOI: 10.1109/WCSP.2014.6992044
Xiaowu Chen, Minjian Zhao, Chenlei Xu
{"title":"Preamble-based channel estimation methods with high spectral efficiency for pulse shaping OFDM/OQAM systems","authors":"Xiaowu Chen, Minjian Zhao, Chenlei Xu","doi":"10.1109/WCSP.2014.6992044","DOIUrl":"https://doi.org/10.1109/WCSP.2014.6992044","url":null,"abstract":"The classical preamble-based channel estimation for pulse shaping orthogonal frequency division multiplex/offset QAM (OFDM/OQAM) systems requires zero-value guard symbols to guarantee interference avoidance, which leads to low spectral efficiency. In this study, we cut down the preamble structure without zero-value guard symbol to reduce preamble resource overhead. However, the intrinsic imaginary interference from unknown data symbols around degrades the channel estimation performance. Therefore, we provide three different methods to remove or even utilize the intrinsic interference. Simulation results demonstrate that compared with the classical methods, the proposed approaches achieve approximate performance and save preamble resource.1","PeriodicalId":412971,"journal":{"name":"2014 Sixth International Conference on Wireless Communications and Signal Processing (WCSP)","volume":"159 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122036466","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: 7
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