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Optical generation of low phase noise Microwave by Y-branch integrated dual wavelength laser y支集成双波长激光器产生低相位噪声微波
The 19th Annual Wireless and Optical Communications Conference (WOCC 2010) Pub Date : 2010-05-14 DOI: 10.1109/WOCC.2010.5510646
Yi Luo, Jin Huang, Changzheng Sun, B. Xiong
{"title":"Optical generation of low phase noise Microwave by Y-branch integrated dual wavelength laser","authors":"Yi Luo, Jin Huang, Changzheng Sun, B. Xiong","doi":"10.1109/WOCC.2010.5510646","DOIUrl":"https://doi.org/10.1109/WOCC.2010.5510646","url":null,"abstract":"The design and fabrication of a Y-branch integrated dual wavelength laser diode is reported for optical generation of microwave carrier based on sideband injection locking. Microwave at a frequency over 40 GHz with high spectral purity has been generated by both external and self injection locking configurations. Frequency tuning range of GHz order is demonstrated.","PeriodicalId":427398,"journal":{"name":"The 19th Annual Wireless and Optical Communications Conference (WOCC 2010)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126872274","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
Salient region detection in high resolution remote sensing images 高分辨率遥感图像的显著区检测
The 19th Annual Wireless and Optical Communications Conference (WOCC 2010) Pub Date : 2010-05-14 DOI: 10.1109/WOCC.2010.5510681
Jun-Ge Sun, Yunhong Wang, Zhaoxiang Zhang, Yiding Wang
{"title":"Salient region detection in high resolution remote sensing images","authors":"Jun-Ge Sun, Yunhong Wang, Zhaoxiang Zhang, Yiding Wang","doi":"10.1109/WOCC.2010.5510681","DOIUrl":"https://doi.org/10.1109/WOCC.2010.5510681","url":null,"abstract":"In this paper, we address the problem of automatic pre-segmentation for object detection and recognition in remote sensing image processing. It plays an important role in reducing computational burden and increasing efficiency for further image processing and analysis. A visual-attention based saliency computation approach is introduced to select the perceptually salient and highly informative regions that represent the main contents of the high resolution remote sensing images. In our method, two bottom-up visual saliency computation methods, edge-based and Graph-based visual saliency (GBVS), are adopted to exploit different kind of features, and the two saliency maps are fused using a 2D Gaussian shaped function for the purpose of improving salient region detection performance. The experimental results demonstrate that our proposed method performs well in ground-truth evaluation and outperforms on the salient target area segmentation task, thus could be introduced for preprocessing of targets object detection and recognition.","PeriodicalId":427398,"journal":{"name":"The 19th Annual Wireless and Optical Communications Conference (WOCC 2010)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126936773","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: 16
Intrusion detection based on traffic analysis in wireless sensor networks 基于流量分析的无线传感器网络入侵检测
The 19th Annual Wireless and Optical Communications Conference (WOCC 2010) Pub Date : 2010-05-14 DOI: 10.1109/WOCC.2010.5510642
Y. Ponomarchuk, Dae-Wha Seo
{"title":"Intrusion detection based on traffic analysis in wireless sensor networks","authors":"Y. Ponomarchuk, Dae-Wha Seo","doi":"10.1109/WOCC.2010.5510642","DOIUrl":"https://doi.org/10.1109/WOCC.2010.5510642","url":null,"abstract":"This paper proposes a lightweight, fast, and efficient traffic intensity-based intrusion detection method for wireless sensor networks (WSNs), containing a large number of nodes which transmit data periodically. Intrusion detection method is based on analysis of neighbor's behavior and thresholding technique, applied to selected parameters: the number of received packets in a time window of a given length and inter-arrival time of packets. It does not require installation of any additional hardware and extra communication costs; its computational requirements are negligible. The proposed technique ma be used in both hierarchical and flat WSNs. The paper contains recommendations to the choice of threshold value for each traffic parameter. The results of evaluation, which was performed in Castalia simulator for WSNs, demonstrate that the proposed intrusion detection technique has better accuracy in comparison to the common algorithms.","PeriodicalId":427398,"journal":{"name":"The 19th Annual Wireless and Optical Communications Conference (WOCC 2010)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127840720","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: 62
A heuristic algorithm for minimum cost multicast routing in OTN network OTN网络中最小开销组播路由的启发式算法
The 19th Annual Wireless and Optical Communications Conference (WOCC 2010) Pub Date : 2010-05-14 DOI: 10.1109/WOCC.2010.5510670
Chao Fang, Chunfang Feng, Xue Chen
{"title":"A heuristic algorithm for minimum cost multicast routing in OTN network","authors":"Chao Fang, Chunfang Feng, Xue Chen","doi":"10.1109/WOCC.2010.5510670","DOIUrl":"https://doi.org/10.1109/WOCC.2010.5510670","url":null,"abstract":"It is important to support the multicast in the OTN network since multicast services are becoming more popular and multicasting will result in the improvement of resource utilization rate. To support multicast in a cost-effective way, the multicast of OTN should be realized in electronic domain based on ODU-level rather than optical domain in our point of view. In order to implement multicast routing in OTN, a new minimum cost tree heuristic algorithm is brought forward by us, which takes account of path sharing and load balancing. The simulation results show that the proposed multicast routing algorithm can achieve the preferable performance.","PeriodicalId":427398,"journal":{"name":"The 19th Annual Wireless and Optical Communications Conference (WOCC 2010)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131488698","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
A modified constellation extension scheme with low complexity for PAPR reduction in OFDM systems 一种改进的低复杂度星座扩展方案，用于OFDM系统中PAPR的降低
The 19th Annual Wireless and Optical Communications Conference (WOCC 2010) Pub Date : 2010-05-14 DOI: 10.1109/WOCC.2010.5510615
Hsinying Liang, Kuo-Chen Chung, Houshou Chen, Yung-Fa Huang
{"title":"A modified constellation extension scheme with low complexity for PAPR reduction in OFDM systems","authors":"Hsinying Liang, Kuo-Chen Chung, Houshou Chen, Yung-Fa Huang","doi":"10.1109/WOCC.2010.5510615","DOIUrl":"https://doi.org/10.1109/WOCC.2010.5510615","url":null,"abstract":"High peak-to-average power ratio (PAPR) is one major drawback of orthogonal frequency division multiplexing (OFDM) systems. Recently, the constellation extended scheme (CES) is an active technique for reducing PAPR of OFDM signals. However, this approach needs high computational load and more inverse Fast Fourier transform (IFFT) operations for finding the transmitted signal with minimum PAPR out. Therefore, this paper proposes a modified CES with lower computational load and IFFT operations than the CES in a 16-QAM OFDM system. Our proposed method, which combines the CES with the partial transmit sequences (PTS) technique, is also called CES-PTS. When compared to PTS techniques, our proposed method has no need to transmit side information in the transmitter.","PeriodicalId":427398,"journal":{"name":"The 19th Annual Wireless and Optical Communications Conference (WOCC 2010)","volume":"128 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128140573","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
Residual energy-aware cooperative transmission (REACT) in wireless networks 无线网络中的剩余能量感知协同传输(REACT)
The 19th Annual Wireless and Optical Communications Conference (WOCC 2010) Pub Date : 2010-05-14 DOI: 10.1109/WOCC.2010.5510668
Erwu Liu, Qinqing Zhang, K. Leung
{"title":"Residual energy-aware cooperative transmission (REACT) in wireless networks","authors":"Erwu Liu, Qinqing Zhang, K. Leung","doi":"10.1109/WOCC.2010.5510668","DOIUrl":"https://doi.org/10.1109/WOCC.2010.5510668","url":null,"abstract":"We study the problem of cooperative transmission, relay selection and scheduling in battery-operated wireless networks, where energy efficiency is a critical design consideration. We assume that multiple relay nodes in the network can cooperate their transmissions of information to gain energy savings in a distributed network MIMO system. We formulate the problem as maximizing the lifetime of the network in terms of maximizing the overall number of packets transmitted by the source to the destination, given a limited energy supply at the source node and each relay node along the transmission path. Unlike the existing method where all relay nodes cooperatively transmit to the receiving node, we construct a selection method to choose a subset of all relays to participate in the cooperative transmission. The chosen subset is the one that maximizes the lifetime of the network and we call the selection method a residual energy-aware cooperative transmission (REACT) algorithm. Our simulation results show that the proposed REACT algorithm demonstrate much improved lifetime compared to the existing method.","PeriodicalId":427398,"journal":{"name":"The 19th Annual Wireless and Optical Communications Conference (WOCC 2010)","volume":"127 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134371585","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
Topology automatic discovery method and layout algorithm for EPON and WiMAX Convergence Network EPON和WiMAX融合网络拓扑自动发现方法及布局算法
The 19th Annual Wireless and Optical Communications Conference (WOCC 2010) Pub Date : 2010-05-14 DOI: 10.1109/WOCC.2010.5510674
Wenchang Yu, Yuqin Gu, Miao Lv, Xue Chen
{"title":"Topology automatic discovery method and layout algorithm for EPON and WiMAX Convergence Network","authors":"Wenchang Yu, Yuqin Gu, Miao Lv, Xue Chen","doi":"10.1109/WOCC.2010.5510674","DOIUrl":"https://doi.org/10.1109/WOCC.2010.5510674","url":null,"abstract":"EPON and WiMAX Convergence Network integrates the “master-slave and peer-to-peer combined” EPON network structure that supports protection switching with the WiMAX technology. Directing at the complicated architecture and various types of topology of the convergence network, this article proposes an automatic discovery method and a layout algorithm for network topology to facilitate the network management. Adopting the automatic discovery technology which based on SNMP, the automatic discovery method will automatically discover the active and passive devices without increasing the burden of the network. The layout algorithm actually includes the topology auto-adapt layout algorithm when the devices have been discovered and the auto-relayout algorithm when the topology has been changed by the user. The layout algorithm will draw reasonable and distinct topology maps for the user to check through and edit.","PeriodicalId":427398,"journal":{"name":"The 19th Annual Wireless and Optical Communications Conference (WOCC 2010)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124396624","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
Improving spectral efficiency and receiving sensitivity in a direct-detected OFDM system 提高直接检测OFDM系统的频谱效率和接收灵敏度
The 19th Annual Wireless and Optical Communications Conference (WOCC 2010) Pub Date : 2010-05-14 DOI: 10.1109/WOCC.2010.5510679
K. Feng, W. Peng
{"title":"Improving spectral efficiency and receiving sensitivity in a direct-detected OFDM system","authors":"K. Feng, W. Peng","doi":"10.1109/WOCC.2010.5510679","DOIUrl":"https://doi.org/10.1109/WOCC.2010.5510679","url":null,"abstract":"We'll bring out our latest developments in improving the spectral efficiency and receiving sensitivity in a direct-detected OFDM transmission. The analytical model, numerical simulations and experimental results of the proposed architectures will be presented.","PeriodicalId":427398,"journal":{"name":"The 19th Annual Wireless and Optical Communications Conference (WOCC 2010)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129133451","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
Multimode fiber bandwidth increase by means of spatial light filtration 采用空间滤光法提高多模光纤带宽
The 19th Annual Wireless and Optical Communications Conference (WOCC 2010) Pub Date : 2010-05-14 DOI: 10.1109/WOCC.2010.5510623
L. Maksymiuk, G. Stepniak, J. Siuzdak
{"title":"Multimode fiber bandwidth increase by means of spatial light filtration","authors":"L. Maksymiuk, G. Stepniak, J. Siuzdak","doi":"10.1109/WOCC.2010.5510623","DOIUrl":"https://doi.org/10.1109/WOCC.2010.5510623","url":null,"abstract":"The paper investigates the influence of the amplitude spatial filtering of the launched light beam on the base-band width of MM fiber frequency response. The filter is located on the confocal plane of an 4f imager. It is shown both theoretically and experimentally that a substantial increase of 3 dB base-band frequency is possible with only moderate filtration losses.","PeriodicalId":427398,"journal":{"name":"The 19th Annual Wireless and Optical Communications Conference (WOCC 2010)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115533816","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
Throughput analysis of CSMA protocol with Exponential Backoff 具有指数回退的CSMA协议吞吐量分析
The 19th Annual Wireless and Optical Communications Conference (WOCC 2010) Pub Date : 2010-05-14 DOI: 10.1109/WOCC.2010.5510620
Pui King Wong, Dongjie Yin, T. Lee
{"title":"Throughput analysis of CSMA protocol with Exponential Backoff","authors":"Pui King Wong, Dongjie Yin, T. Lee","doi":"10.1109/WOCC.2010.5510620","DOIUrl":"https://doi.org/10.1109/WOCC.2010.5510620","url":null,"abstract":"This paper studies the performance of Non-persistent CSMA protocols using K-Exponential Backoff collision resolution algorithms. We model it as a multi-queue single-server system with infinite buffer size and consider the service time distribution of Head-of-line packets as a Markov Chain to get the network throughput as well as the stability. The stable region of retransmission factor q is illustrated in examples of Exponential Backoff (K=∞). For throughput stability, we show the stabilized throughput can be obtained in networks even for infinite nodes.","PeriodicalId":427398,"journal":{"name":"The 19th Annual Wireless and Optical Communications Conference (WOCC 2010)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122108718","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
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