2006 First International Conference on Communications and Networking in China最新文献_第8页

Comparison of the Link Level Performance between OFDMA and SC-FDMA OFDMA与SC-FDMA链路级性能比较

2006 First International Conference on Communications and Networking in China Pub Date : 2006-10-01 DOI: 10.1109/CHINACOM.2006.344649

Jianhua Zhang, Chengxiang Huang, Guangyi Liu, Ping Zhang

引用次数: 32

Performance Analysis of Burst Assembly under Self-Similar Traffic with Measured WAN Packet Size Distribution 自相似流量下广域网分组大小分布测量的突发分组性能分析

2006 First International Conference on Communications and Networking in China Pub Date : 2006-10-01 DOI: 10.1109/CHINACOM.2006.344869

Zhaobiao Lu, Zhijian Xu, Bin Wan, Min Zhang, P. Ye

{"title":"Performance Analysis of Burst Assembly under Self-Similar Traffic with Measured WAN Packet Size Distribution","authors":"Zhaobiao Lu, Zhijian Xu, Bin Wan, Min Zhang, P. Ye","doi":"10.1109/CHINACOM.2006.344869","DOIUrl":"https://doi.org/10.1109/CHINACOM.2006.344869","url":null,"abstract":"Studied in this paper is the convergence performance of three typical burst assembly mechanisms in optical burst-switching (OBS) networks, namely threshold-based, timer-based, and hybrid assembly algorithms. Burst assembly is an important function implemented at edge nodes in optical burst switching (OBS) networks. It can reduce the switching burden and overheads at the optical layer, by aggregating multiple packets from client networks to create a larger optical burst for transmission through the OBS network. Furthermore, burst assembly designed properly can reduce the self-similarity of traffic as traffic shaper. The main challenge in designing burst assembly is to balance the several opposing objectives: first, increasing the burst size; second, maintaining acceptable assembly delay introduced during burst assembly; thirdly, reducing the self-similarity as possible in case of self-similar traffic. Vital parameters, such as optical burst size and assembly delay, are examined by simulations under self-similar input traffic with a measured WAN packet size distribution. The balance between the burst size and the assembly delay for hybrid assembly is also discussed. The results show that the assembly threshold always keeps the burst size near the threshold while the assembly time-limit makes the burst size scattered and even split into multiple peaks when the incoming IP packet size is discrete. In addition, the self-similarity of input traffic has little impact on the burst size and the assembly delay for all three mechanisms. For hybrid assembly, when one of the assembly threshold and the assembly time-limit parameters is fixed, the burst size and the assembly delay are hard to improve by adjusting the other parameter when greater than a certain value","PeriodicalId":408368,"journal":{"name":"2006 First International Conference on Communications and Networking in China","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128502990","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

Development of a Flexible Access Control Design by Extending RBAC 基于扩展RBAC的灵活访问控制设计

2006 First International Conference on Communications and Networking in China Pub Date : 2006-10-01 DOI: 10.1109/CHINACOM.2006.344682

Yulong Jin, Yongsun Choi, Myeonggil Choi, Sangmun Shin

引用次数: 1

An Energy-Efficient Re-Routing Method in Wireless Mobile ad hoc Networks 无线移动自组网中一种节能的重路由方法

2006 First International Conference on Communications and Networking in China Pub Date : 2006-10-01 DOI: 10.1109/CHINACOM.2006.344803

Songtao Zhan, Jin Wang, Guoxin Xu, Ping Zhang

引用次数: 0

Reliable Multicast Based on Erasure Resilient Codes over InfiniBand 基于Erasure弹性码的ib可靠组播

2006 First International Conference on Communications and Networking in China Pub Date : 2006-10-01 DOI: 10.1109/CHINACOM.2006.344802

Xigui Wang, Zifeng Xiao, Jizhong Han, Chengde Han

{"title":"Reliable Multicast Based on Erasure Resilient Codes over InfiniBand","authors":"Xigui Wang, Zifeng Xiao, Jizhong Han, Chengde Han","doi":"10.1109/CHINACOM.2006.344802","DOIUrl":"https://doi.org/10.1109/CHINACOM.2006.344802","url":null,"abstract":"Many distributed applications and systems, e.g., an efficient implementation of distributed cache coherence protocol in distributed shared-memory systems, usually require efficient, reliable and scalable multicast capabilities from low-level interconnections. However, InfiniBand network, a high performance interconnection with low latency and high bandwidth, lacks the necessary reliable hardware multicast capability. To avoid low-efficiency multicast emulation with one-to-many point-to-point messages and ACKs, this paper proposes an efficient algorithm to provide reliable multicast based on erasure resilient codes over InfiniBand. This algorithm can not only avoid the feedback implosion problem by point-to-point multicast emulation messages, but also achieve lower latency and better scalability comparing with automatic-request retransmission (ARQ). Moreover, this algorithm can be optimized with message pipeline mechanism to achieve the same level of latency as the un-reliable InfiniBand hardware multicast. Performance analysis demonstrates that the failure probability to recover a message is less than 1.4times10 even for a system with 1000 message receivers","PeriodicalId":408368,"journal":{"name":"2006 First International Conference on Communications and Networking in China","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131136251","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

Performance Analysis of Adaptive Threshold Acquisition Algorithm in DS-UWB with Multi-path Environment DS-UWB多径环境下自适应阈值采集算法性能分析

2006 First International Conference on Communications and Networking in China Pub Date : 2006-10-01 DOI: 10.1109/CHINACOM.2006.344808

Jun Chen, Yongbo Zeng, Zheng Zhou

引用次数: 1

A Novel Approach for MIMO Adaptive Equalization Based on Affine Projection Algorithm 一种基于仿射投影算法的MIMO自适应均衡新方法

2006 First International Conference on Communications and Networking in China Pub Date : 2006-10-01 DOI: 10.1109/CHINACOM.2006.344651

Guanghui He, Zucheng Zhou

引用次数: 4

A Stable Rapid Timing Synchronization Scheme for Impulse Radio UWB 脉冲无线电超宽带稳定快速定时同步方案

2006 First International Conference on Communications and Networking in China Pub Date : 2006-10-01 DOI: 10.1109/CHINACOM.2006.344773

Hongjiang Wang, Shengming Jiang, G. Wei, Fei Ji

{"title":"A Stable Rapid Timing Synchronization Scheme for Impulse Radio UWB","authors":"Hongjiang Wang, Shengming Jiang, G. Wei, Fei Ji","doi":"10.1109/CHINACOM.2006.344773","DOIUrl":"https://doi.org/10.1109/CHINACOM.2006.344773","url":null,"abstract":"Rapid synchronization acquisition is one of the biggest challenges of burst-mode transmission for ultra-wide band (UWB) wireless communications, especially for the impulse radio UWB (IR-UWB) due to the very short duration of the monopulse. Some rapid synchronization acquisition schemes have been proposed in the literature to reduce the mean acquisition time. However, most of them have no stability, i.e., when the delay time of arrive (TOA) for the transmitted signals becomes larger, the mean acquisition time will increase linearly. In this paper, a stable and rapid synchronization acquisition, namely selective bit reversal block search (SBRBS), is presented. The algorithm takes full advantage of the bit reversal technique, which can keep the maximum interval between the two neighboring uncertain search points to improve the detection probability and achieve a smallest search terminating time every four consecutive search points. The paper analyzes the stability of the proposed scheme in detail and makes comparison with other algorithms. Theoretical analysis and simulation results show that the proposed algorithm outperforms others in term of reduced synchronization acquisition time and increased stability.","PeriodicalId":408368,"journal":{"name":"2006 First International Conference on Communications and Networking in China","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128731507","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

Adaptive Bandwidth Allocation Based on Particle Swarm Optimization for Multimedia LEO Satellite Systems 基于粒子群优化的多媒体低轨卫星系统自适应带宽分配

2006 First International Conference on Communications and Networking in China Pub Date : 2006-10-01 DOI: 10.1109/CHINACOM.2006.344787

Dong Yan, Zhou Chi, Suo Si-liang, Huang Zailu

引用次数: 4

Near Optimal Detection of DCT-Domain Watermarks using Alpha-Stable Models 基于稳定模型的dct域水印近最优检测

2006 First International Conference on Communications and Networking in China Pub Date : 2006-10-01 DOI: 10.1109/CHINACOM.2006.344880

Zhongwei Sun, Gang Xu

引用次数: 0