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2009 15th Asia-Pacific Conference on Communications最新文献

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Study on modulo-lattice in vector perturbation for MIMO broadcast channels MIMO广播信道矢量摄动中的模格研究
2009 15th Asia-Pacific Conference on Communications Pub Date : 2009-10-08 DOI: 10.1109/APCC.2009.5375637
Jianping Zheng, B. Bai, Ying Li, Daqing Gu, Yajuan Luo
{"title":"Study on modulo-lattice in vector perturbation for MIMO broadcast channels","authors":"Jianping Zheng, B. Bai, Ying Li, Daqing Gu, Yajuan Luo","doi":"10.1109/APCC.2009.5375637","DOIUrl":"https://doi.org/10.1109/APCC.2009.5375637","url":null,"abstract":"The modulo in the vector perturbation for the multiple-input multiple-output broadcast channel is studied. The notion of modulo-lattice is presented, which is a direct extension of the conventional modulo constant. And the conditions that a good modulo-lattice should be satisfied are analyzed. Based on this analysis, some good modulo-lattices are suggested for the quadrature-amplitude modulation (QAM) and the phase-shift keying (PSK), respectively. For example, a scale hexagonal lattice is suggested as the modulo-lattice for M-PSK (M>4). Moreover, the efficient implementation of the modulo-lattice at the transceiver is illustrated by the scale hexagonal lattice. Simulations show that the modulo-lattice suggested has a gain of about 0.8 dB over the conventional modulo constant in high signal-to-noise ratio (SNR) regions for M-PSK.","PeriodicalId":217893,"journal":{"name":"2009 15th Asia-Pacific Conference on Communications","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126894138","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
A new scheme for quantum key distribution in free-space 一种新的自由空间量子密钥分配方案
2009 15th Asia-Pacific Conference on Communications Pub Date : 2009-10-08 DOI: 10.1109/APCC.2009.5375518
Guoqing Cui, Yuan Lu, Guihua Zeng
{"title":"A new scheme for quantum key distribution in free-space","authors":"Guoqing Cui, Yuan Lu, Guihua Zeng","doi":"10.1109/APCC.2009.5375518","DOIUrl":"https://doi.org/10.1109/APCC.2009.5375518","url":null,"abstract":"Quantum key distribution (QKD) has been proposed for decades. Many applications have been deployed recently for both wired and wireless networks. Especially for optical networks, QKD technique has a great development. But in free-space quantum key distribution still has a lot of problems such as a low bit rate. In this paper we propose a new scheme, combining MIMO (Multiple input multiple output) system and wireless networks for QKD in free-space networks. With the proposed approach, a higher bit rate QKD networks in free-space could be realized theoretically.","PeriodicalId":217893,"journal":{"name":"2009 15th Asia-Pacific Conference on Communications","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125790857","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 design of DDR-1 solid state drive using PCI-e interface 基于PCI-e接口的DDR-1固态硬盘的设计
2009 15th Asia-Pacific Conference on Communications Pub Date : 2009-10-08 DOI: 10.1109/APCC.2009.5375460
Ko Dae-sik, Chung Seung-kook
{"title":"A design of DDR-1 solid state drive using PCI-e interface","authors":"Ko Dae-sik, Chung Seung-kook","doi":"10.1109/APCC.2009.5375460","DOIUrl":"https://doi.org/10.1109/APCC.2009.5375460","url":null,"abstract":"In this paper, we designed and analyzed high-end DRAM-based SSD storage using DDR-1 memory and PCI-e interface. SSD is a storage device that uses DRAM or NAND Flash as primary storage media. Since the SSD stores and accesses data directly to memory chips, which results in storage speeds far greater than conventional magnetic storage devices(HDD). Proposed SSD architecture has performance of high speed data processing duo to use multiple RAM disks as primary storage and PCI-e interface bus as communication path of RAM disks. We constructed experimental system with UNIX, Windows/Linux server, SAN Switch, and Ethernet Switch and measured IOPS and bandwidth using IOmeter. In experimental results, it has been shown that IO performance and bandwidth of the DDR-1 SSD is better than those of the HDD and Flash-based SSD","PeriodicalId":217893,"journal":{"name":"2009 15th Asia-Pacific Conference on Communications","volume":"56 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123425337","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
Experimental demonstration of dynamic end-to-end lightpath provisioning mechanism in OBS/GMPLS interworking network OBS/GMPLS互联网络中动态端到端光路供给机制的实验论证
2009 15th Asia-Pacific Conference on Communications Pub Date : 2009-10-08 DOI: 10.1109/APCC.2009.5375578
Xunxian Wang, Haixun Guo, Yiwen Yin, Wangjun Zhang, Xuebin Hong, Yan-ping Zuo, Ji-dong Wu, James T. Lin
{"title":"Experimental demonstration of dynamic end-to-end lightpath provisioning mechanism in OBS/GMPLS interworking network","authors":"Xunxian Wang, Haixun Guo, Yiwen Yin, Wangjun Zhang, Xuebin Hong, Yan-ping Zuo, Ji-dong Wu, James T. Lin","doi":"10.1109/APCC.2009.5375578","DOIUrl":"https://doi.org/10.1109/APCC.2009.5375578","url":null,"abstract":"Multi-layer Provisioning (MLP) of End-to-End light-path in OBS/GMPLS interworking network is successfully demonstrated by introducing extensions to MPLS signaling protocol in LOBS network. The feasibility of this mechanism was experimentally verified in an OBS/GMPLS testbed. In contrast to pervious single-layer resource provision mechanism, MLP ensures stable and high throughput of Reno TCP transportation.","PeriodicalId":217893,"journal":{"name":"2009 15th Asia-Pacific Conference on Communications","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123671772","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
Performance of bit metric derivation method using CCI signals for OFDM adaptive array antenna 基于CCI信号的OFDM自适应阵列天线位度量推导方法的性能
2009 15th Asia-Pacific Conference on Communications Pub Date : 2009-10-08 DOI: 10.1109/APCC.2009.5375663
Yunhan Wang, F. Maehara, F. Takahata, Takashi Onodera, S. Urabe
{"title":"Performance of bit metric derivation method using CCI signals for OFDM adaptive array antenna","authors":"Yunhan Wang, F. Maehara, F. Takahata, Takashi Onodera, S. Urabe","doi":"10.1109/APCC.2009.5375663","DOIUrl":"https://doi.org/10.1109/APCC.2009.5375663","url":null,"abstract":"This paper proposes a bit metric derivation method for OFDM adaptive array in combination with channel coding. In the proposed approach, post-FFT processing is adopted as an OFDM adaptive array architechture and the bit metric required for channel coding is derived considering the effect of the residual CCI signals in the array output of each sub-channel. The transmission performance is evaluated in the presence of severe CCI channels by means of the computer simulations and the effectiveness of the proposed approach is demonstrated compared with the traditional bit metric method.","PeriodicalId":217893,"journal":{"name":"2009 15th Asia-Pacific Conference on Communications","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125594884","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
Real-world performance of current proactive multi-hop mesh protocols 当前主动多跳网格协议的实际性能
2009 15th Asia-Pacific Conference on Communications Pub Date : 2009-10-08 DOI: 10.1109/APCC.2009.5375690
M. Abolhasan, Brett Hagelstein, J.C.-P. Wang
{"title":"Real-world performance of current proactive multi-hop mesh protocols","authors":"M. Abolhasan, Brett Hagelstein, J.C.-P. Wang","doi":"10.1109/APCC.2009.5375690","DOIUrl":"https://doi.org/10.1109/APCC.2009.5375690","url":null,"abstract":"The proliferation of mesh or ad hoc network protocols has lead to a push for protocol standardisation. While there are a number of both open-source and proprietary mesh routing protocols being developed, there is only a small amount of literature available that shows relative strengths and weaknesses of different protocols. This paper investigates the performance of a number of available routing protocols using a real-world testbed. Three routing protocols — Optimised Link State Routing (OLSR), Better Approach To Mobile Ad hoc Network (B.A.T.M.A.N.) and BABEL — were chosen for this study. Our investigations focus on the multi-hopping performance and the ability of each routing protocol to recover from link failures. Our results show that B.A.T.M.A.N. and BABEL outperform OLSR both in terms of multi-hopping performance and in route re-discovery latency.","PeriodicalId":217893,"journal":{"name":"2009 15th Asia-Pacific Conference on Communications","volume":"15 11","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120946679","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: 142
An enhanced handover target cell selection algorithm for WiMAX network 一种增强的WiMAX网络切换目标小区选择算法
2009 15th Asia-Pacific Conference on Communications Pub Date : 2009-10-08 DOI: 10.1109/APCC.2009.5375489
Shen Gu, Jiajing Wang
{"title":"An enhanced handover target cell selection algorithm for WiMAX network","authors":"Shen Gu, Jiajing Wang","doi":"10.1109/APCC.2009.5375489","DOIUrl":"https://doi.org/10.1109/APCC.2009.5375489","url":null,"abstract":"WiMAX is one of the most promising technologies which is to go through wireless broadband last mile access. Handover procedure plays a crucial role in the mobile WiMAX application. This paper introduces an implementable enhanced handover target cell selection algorithm for WiMAX network based on the effective capacity estimation and neighbor advertisement which can effectively avoid the ping-pong effect and handover synchronization effect. NS-2 simulation is also given to show the performance enhancement of the enhanced algorithm compared with the traditional algorithm based on signal power and 802.16g quick handover algorithm.","PeriodicalId":217893,"journal":{"name":"2009 15th Asia-Pacific Conference on Communications","volume":"160 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131657769","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: 11
Wavelength interleaving towards DWDM and spectral efficiency in dual-toned millimeter-wave radio-over-fiber systems [invited] 双频毫米波光纤无线电系统中面向DWDM的波长交织和频谱效率[特邀]
2009 15th Asia-Pacific Conference on Communications Pub Date : 2009-10-08 DOI: 10.1109/APCC.2009.5375565
M. Bakaul, Ampalavanapillai Nirmalthas, C. Lim, D. Novak, R. Waterhouse
{"title":"Wavelength interleaving towards DWDM and spectral efficiency in dual-toned millimeter-wave radio-over-fiber systems [invited]","authors":"M. Bakaul, Ampalavanapillai Nirmalthas, C. Lim, D. Novak, R. Waterhouse","doi":"10.1109/APCC.2009.5375565","DOIUrl":"https://doi.org/10.1109/APCC.2009.5375565","url":null,"abstract":"Wavelength interleaving scheme that has the potential to implement DWDM channel spacing smaller than the millimeter-wave radio frequencies in high-speed radio-over-fiber systems are addressed. Optical subsystems potentially enabling the scheme practically are also briefly discussed.","PeriodicalId":217893,"journal":{"name":"2009 15th Asia-Pacific Conference on Communications","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134163282","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
A relay node selection technique for opportunistic routing in mobile Ad Hoc networks 移动Ad Hoc网络中机会路由的中继节点选择技术
2009 15th Asia-Pacific Conference on Communications Pub Date : 2009-10-08 DOI: 10.1109/APCC.2009.5375512
Nie Zhi, Liu Jing, Botong Li, Hanchun Liu, Youyun Xu
{"title":"A relay node selection technique for opportunistic routing in mobile Ad Hoc networks","authors":"Nie Zhi, Liu Jing, Botong Li, Hanchun Liu, Youyun Xu","doi":"10.1109/APCC.2009.5375512","DOIUrl":"https://doi.org/10.1109/APCC.2009.5375512","url":null,"abstract":"In this paper, we propose a new relay node selection algorithm: relay node selection Considering Future Path(CFP) for opportunistic routings in mobile Ad Hoc networks, aiming to provide enhanced performance of successful delivery ratio. CFP based on the shortest distance algorithm and it not only considers the current distance towards the destination but also considers the future hops and estimates whether through the current node can a packet arrive at the destination. CFP can enhance the performance of successful delivery ratio by solving the potential problem of no forwarding relays in the shortest distance algorithm. Simulation results show that contrast against the shortest distance algorithm in opportunistic routing protocol GeRaF, CFP has better performance on both delivery ratio and goodput.","PeriodicalId":217893,"journal":{"name":"2009 15th Asia-Pacific Conference on Communications","volume":"137 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134068134","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
A novel MAC protocol for improving performance in CORNet 一种改进CORNet性能的新MAC协议
2009 15th Asia-Pacific Conference on Communications Pub Date : 2009-10-08 DOI: 10.1109/APCC.2009.5375583
Won-Hyuk Yang, Keoung-Eun Han, Limei Peng, Jae-Young Lee, Xiao Li, Young-Chon Kim
{"title":"A novel MAC protocol for improving performance in CORNet","authors":"Won-Hyuk Yang, Keoung-Eun Han, Limei Peng, Jae-Young Lee, Xiao Li, Young-Chon Kim","doi":"10.1109/APCC.2009.5375583","DOIUrl":"https://doi.org/10.1109/APCC.2009.5375583","url":null,"abstract":"The Collision-free Optic-burst Network (CORNet) was proposed in order to avoid the channel collision in OBS ring network. The CORNet employs the Multi-token Access Control Algorithm(MACA) to solve the channel collision problem. The MACA protocol uses multiple tokens to manage the accessibility of all data wavelengths and the tokens are synchronously transmitted around the ring. However, the MACA in CORNet has some limitation to use network resources because tokens are synchronously transmitted around the ring and nodes should wait for available bandwidth between two adjacent tokens before transmitting bursts. Thus, the resources are wasted although the MACA can guarantees a collision-free by the synchronous management of tokens. In this paper, we focus on improving the performance of the Collision-free Optic-burst Ring Network. We propose a new protocol which reuses the wavelengths to increase the utilization of resource in the CORNet named Protocol for Reusing Available Drop-wavelength Appropriately (PRADA). The proposed protocol can be implemented based on three queue selection methods to reuse available wavelengths after dropping sub-bursts at destination: Best-Fit (BF), Farthest sub-Burst (FB), and Neighbor sub-Burst (NB). The performance of the proposed protocols with three queue selection methods is evaluated and compared in terms of throughput and average queuing delay through OPNET simulation. The simulation results show that three proposed schemes increase the throughput about 10% and lower queueing delay than DT-WSC. And the BF achieves the best performance among the three queue selection schemes","PeriodicalId":217893,"journal":{"name":"2009 15th Asia-Pacific Conference on Communications","volume":"289 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133749057","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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