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2011 International Conference on Wireless Communications and Signal Processing (WCSP)最新文献

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A carrier frequency offset estimation algorithm for OFDM systems OFDM系统的载波频偏估计算法
2011 International Conference on Wireless Communications and Signal Processing (WCSP) Pub Date : 2011-12-08 DOI: 10.1109/WCSP.2011.6096874
Pengcheng Zhu
{"title":"A carrier frequency offset estimation algorithm for OFDM systems","authors":"Pengcheng Zhu","doi":"10.1109/WCSP.2011.6096874","DOIUrl":"https://doi.org/10.1109/WCSP.2011.6096874","url":null,"abstract":"This paper addresses the carrier frequency synchronization problem in OFDM systems. A data-aided carrier frequency offset (CFO) estimation algorithm is proposed. A well-designed training sequence provides the algorithm immunity to the effect of multipath channel, so that the algorithm can be applied without any channel knowledge. A smart iterative procedure is designed for the algorithm to achieve good estimation accuracy. Moreover in depth performance analysis for the algorithm is presented. An upper bound on the probability of unacceptable estimation error (UEE) and a lower bound on mean square error (MSE) are derived, which evaluate the algorithm performance from different points of view. Finally, the proposed algorithm and the performance analysis results are verified by simulation results.","PeriodicalId":145041,"journal":{"name":"2011 International Conference on Wireless Communications and Signal Processing (WCSP)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123497061","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 correlated-equilibrium-based subcarrier allocation scheme for interference minimization in multi-cell OFDMA systems 多小区OFDMA系统中基于相关均衡的干扰最小化子载波分配方案
2011 International Conference on Wireless Communications and Signal Processing (WCSP) Pub Date : 2011-12-08 DOI: 10.1109/WCSP.2011.6096766
Jianchao Zheng, Yueming Cai, Dan Wu
{"title":"A correlated-equilibrium-based subcarrier allocation scheme for interference minimization in multi-cell OFDMA systems","authors":"Jianchao Zheng, Yueming Cai, Dan Wu","doi":"10.1109/WCSP.2011.6096766","DOIUrl":"https://doi.org/10.1109/WCSP.2011.6096766","url":null,"abstract":"Interference management is a key problem to system performance in the next-generation wireless networks. In this paper, a distributed cooperation policy selection scheme for interference minimization is proposed to perform subcarrier assignment for uplink multi-cell OFDMA systems by adopting a new solution concept, the correlated equilibrium, which achieves better performance by allowing each user to consider the joint distribution of the users' actions. The proposed algorithm exhibits low complexity and converges to a set of correlated equilibria with probability one. Simulation results demonstrate that the proposed algorithm offers a good performance.","PeriodicalId":145041,"journal":{"name":"2011 International Conference on Wireless Communications and Signal Processing (WCSP)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122123911","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
Improvement of ghost imaging on orbital angular momentum by using JPEG & Linear block codes 利用JPEG和线性分组码改进轨道角动量的鬼影成像
2011 International Conference on Wireless Communications and Signal Processing (WCSP) Pub Date : 2011-12-08 DOI: 10.1109/WCSP.2011.6096918
Xiaoliang Dong, Fei Cao, Shengmei Zhao, B. Zheng
{"title":"Improvement of ghost imaging on orbital angular momentum by using JPEG & Linear block codes","authors":"Xiaoliang Dong, Fei Cao, Shengmei Zhao, B. Zheng","doi":"10.1109/WCSP.2011.6096918","DOIUrl":"https://doi.org/10.1109/WCSP.2011.6096918","url":null,"abstract":"Ghost imaging has attracted a lot of attentions recently, but the trade-off between the reliability and the transmitting rate becomes the biggest challenge for ghost imaging. In this paper, we present a method to improve the transmitting rate with the unchanged reliability for ghost-imaging system based on entanglement. In the scheme, we first encode the image by Joint Photographic Experts Group (JPEG) algorithm before transmitting an image, and then encode the JPEG bits stream using linear block codes to overcome the lossy information by compression. The transmitting rate can be enhanced by compression, and the reliability can be kept by linear block codes. By experiments, the results show that when the compression ratio of JPEG is beyond the coding efficiency of linear block codes, we can get some gains of the image with Peak Signal-to-Noise Ratio(PSNR) increase. Compared with direct transmission bit stream, our scheme can improve the PSNR 16dB, using 1.225 times of the transmission times.","PeriodicalId":145041,"journal":{"name":"2011 International Conference on Wireless Communications and Signal Processing (WCSP)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131306204","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
Beamformer designs for zero-forcing dirty paper coding 零强迫污纸编码波束形成器设计
2011 International Conference on Wireless Communications and Signal Processing (WCSP) Pub Date : 2011-12-08 DOI: 10.1109/WCSP.2011.6096955
Le-Nam Tran, M. Juntti, M. Bengtsson, B. Ottersten
{"title":"Beamformer designs for zero-forcing dirty paper coding","authors":"Le-Nam Tran, M. Juntti, M. Bengtsson, B. Ottersten","doi":"10.1109/WCSP.2011.6096955","DOIUrl":"https://doi.org/10.1109/WCSP.2011.6096955","url":null,"abstract":"We consider the beamformer design for zero-forcing dirty paper coding (ZF-DPC), a suboptimal transmission technique for MISO broadcast channels (MISO BCs). For the sum rate maximization problem under a total power constraint, the existing beamformer designs in the literature are based on the QR decomposition (QRD), which is used to satisfy the ZF constraints. However, the optimality of the QRD-based design has been unknown previously. In this paper, we prove that the QRD-based design is optimal for ZF-DPC for any performance measure under a sum power constraint. For the per-antenna power constraints, the QRD-based designs become suboptimal, and we propose an optimal design, using a convex optimization framework. Low-complexity suboptimal designs are also presented, and numerically shown to achieve a significant fraction of the sum rate provided by the optimal design.","PeriodicalId":145041,"journal":{"name":"2011 International Conference on Wireless Communications and Signal Processing (WCSP)","volume":"89 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126491838","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
Wideband dynamic base station selection for downlink coordinated multipoint system 下行协调多点系统的宽带动态基站选择
2011 International Conference on Wireless Communications and Signal Processing (WCSP) Pub Date : 2011-12-08 DOI: 10.1109/WCSP.2011.6096692
Shulei Gong, Pengcheng Zhu, X. Meng, X. You
{"title":"Wideband dynamic base station selection for downlink coordinated multipoint system","authors":"Shulei Gong, Pengcheng Zhu, X. Meng, X. You","doi":"10.1109/WCSP.2011.6096692","DOIUrl":"https://doi.org/10.1109/WCSP.2011.6096692","url":null,"abstract":"One of the major goals we try to achieve in Long Term Evolution Advanced (LTE-A) is to support higher downlink peak and average cell throughput than LTE Release 8. As one of the promising technologies targeting to the goal, coordinated multipoint transmission/reception (CoMP) is a major topic being discussed recently. CoMP technique significantly mitigates the co-channel interference and thus increases the cell-edge user throughput. In this paper, we propose a novel transmission scheme named wideband dynamic base station selection to further improve the performance of CoMP system. We compare the proposed scheme with the existing joint transmission (CoMP-JT) and coordinated beam-forming (CoMP-CBF) transmission schemes. The simulation results present that the proposed scheme has a good trade-off between the backhaul overhead and system performance.","PeriodicalId":145041,"journal":{"name":"2011 International Conference on Wireless Communications and Signal Processing (WCSP)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128367357","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
Augment delay tolerant networking routing to extend wireless network coverage 增强容错网络路由，扩大无线网络覆盖范围
2011 International Conference on Wireless Communications and Signal Processing (WCSP) Pub Date : 2011-12-08 DOI: 10.1109/WCSP.2011.6096782
Haibo Mei, P. Jiang, J. Bigham
{"title":"Augment delay tolerant networking routing to extend wireless network coverage","authors":"Haibo Mei, P. Jiang, J. Bigham","doi":"10.1109/WCSP.2011.6096782","DOIUrl":"https://doi.org/10.1109/WCSP.2011.6096782","url":null,"abstract":"Cellular networks and Wi-Fi provide range of wireless communication services. They are the practical wireless technologies for domestic and business wireless users currently. However, base station (BS)/access point (AP) may fail in disasters. This failure problem may cause part of users not able to communicate. To solve this problem, one proposed solution is to let users in failure caused coverage hole self-organize to communicate to each other or to functional BS/AP. Delay Tolerate Networking (DTN) is one of such user self-organization technologies. This paper designs and evaluates geographic binary spray and wait routing algorithm (G-BSW) in DTN to let users find routes to close BSs/APs. Meanwhile, BS/AP load balance can be guaranteed. G-BSW is a cooperative algorithm. It controls BSs/APs to broadcast metadata to users to let them find appropriate BS/AP. The metadata contains geographic and related routing information. Through simulation in an open source DTN simulator (ONE simulator), G-BSW is validated to improve message delivery rate, and BS/AP load balance.","PeriodicalId":145041,"journal":{"name":"2011 International Conference on Wireless Communications and Signal Processing (WCSP)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130468694","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
Cooperative transmit diversity based on physical layer network coding 基于物理层网络编码的协同传输分集
2011 International Conference on Wireless Communications and Signal Processing (WCSP) Pub Date : 2011-12-08 DOI: 10.1109/WCSP.2011.6096950
Xinyi Zhong, Youyun Xu, Kui Xu, Ning Li
{"title":"Cooperative transmit diversity based on physical layer network coding","authors":"Xinyi Zhong, Youyun Xu, Kui Xu, Ning Li","doi":"10.1109/WCSP.2011.6096950","DOIUrl":"https://doi.org/10.1109/WCSP.2011.6096950","url":null,"abstract":"We propose a new strategy for cooperative transmit diversity based on physical layer network coding and multiuser detection. Physical-layer Network Coding (PNC) exploits interference, instead of avoiding it, all source nodes transmit simultaneously to significantly enhance network throughput. The scenario under consideration is one in which two source nodes A and B transmit information to a common destination node D. Simulation results show that our new scheme outperforms traditional cooperative diversity based on decode-and-forward about 1.5 dB in terms of frame-error-rate (FER) but less complexity.","PeriodicalId":145041,"journal":{"name":"2011 International Conference on Wireless Communications and Signal Processing (WCSP)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122287857","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
Weakness in 802.11w and an improved mechanism on protection of management frame 802.11w的弱点和改进的管理框架保护机制
2011 International Conference on Wireless Communications and Signal Processing (WCSP) Pub Date : 2011-12-08 DOI: 10.1109/WCSP.2011.6096780
Weijia Wang, Haihang Wang
{"title":"Weakness in 802.11w and an improved mechanism on protection of management frame","authors":"Weijia Wang, Haihang Wang","doi":"10.1109/WCSP.2011.6096780","DOIUrl":"https://doi.org/10.1109/WCSP.2011.6096780","url":null,"abstract":"IEEE 802.11w, an amending standard for 802.11i, provides protection for management frames in WLAN. However, the frames are vulnerable to be eavesdropped, forged and distorted before the Four-Way Handshake complete. An improved mechanism named Temporary Safe Tunnel (TST) is proposed to solve the problem above. Since TST has been meticulously designed, it is low cost and improves the security of WLAN.","PeriodicalId":145041,"journal":{"name":"2011 International Conference on Wireless Communications and Signal Processing (WCSP)","volume":"3 1-4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120900262","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: 13
A novel transmit beamforming scheme for BER improvement in EIRP constrained UWB systems 一种改善EIRP约束下UWB系统误码率的发射波束形成新方案
2011 International Conference on Wireless Communications and Signal Processing (WCSP) Pub Date : 2011-12-08 DOI: 10.1109/WCSP.2011.6096726
Shou Han, Xiantao Cheng, Gang Wu, Guangrong Yue
{"title":"A novel transmit beamforming scheme for BER improvement in EIRP constrained UWB systems","authors":"Shou Han, Xiantao Cheng, Gang Wu, Guangrong Yue","doi":"10.1109/WCSP.2011.6096726","DOIUrl":"https://doi.org/10.1109/WCSP.2011.6096726","url":null,"abstract":"Signal design at the transmitter of Ultra-wideband (UWB) communications system is restricted by their equivalent isotropic radiated power (EIRP) criterion rather than the total transmitted power constraints. This paper investigates three schemes based on antenna selection, scaled eigen-beamforming, and the soft-clipping-based method, respectively. By analyzing signal-to-noise power ratio (SNR) of three schemes mentioned above, this paper proposes a novel combination of the three methods to further improve the BER performance while obeying EIRP criterion. Finally, simulation results are presented to verify the proposed scheme.","PeriodicalId":145041,"journal":{"name":"2011 International Conference on Wireless Communications and Signal Processing (WCSP)","volume":"123 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129963561","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
Capacity of cognitive radio under outage constraint with partial channel knowledge 具有部分信道知识的中断约束下的认知无线电容量
2011 International Conference on Wireless Communications and Signal Processing (WCSP) Pub Date : 2011-12-08 DOI: 10.1109/WCSP.2011.6096883
Yang Liu, Ding Xu, Z. Feng, Qian Li, Ping Zhang
{"title":"Capacity of cognitive radio under outage constraint with partial channel knowledge","authors":"Yang Liu, Ding Xu, Z. Feng, Qian Li, Ping Zhang","doi":"10.1109/WCSP.2011.6096883","DOIUrl":"https://doi.org/10.1109/WCSP.2011.6096883","url":null,"abstract":"This paper considers a cognitive radio network where a secondary user (SU) shares the same narrow spectrum band that is originally licensed to the primary user (PU) as long as the interference caused by the SU to the latter is below a prescribed threshold. At the SU, channel state information (CSI) is used to regulate the SU transmit power to limit the interference. In this respect, we assume only partial CSI is available to the SU, and investigate the SU ergodic capacity under the PU outage loss constraint as well as the peak/average transmit power constraint in Rayleigh fading channels. In particular, we derive the optimal power allocation to achieve the SU ergodic capacity, and further obtain closed-form expressions for the ergodic capacity. Numerical simulations are also given to corroborate our theoretical results.","PeriodicalId":145041,"journal":{"name":"2011 International Conference on Wireless Communications and Signal Processing (WCSP)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128221059","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
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