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2006 Asia-Pacific Conference on Communications最新文献

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Enhanced Westwood+ TCP for Wireless/Heterogeneous Networks 增强Westwood+ TCP无线/异构网络
2006 Asia-Pacific Conference on Communications Pub Date : 2006-12-11 DOI: 10.1109/APCC.2006.255814
Cui Lin, S. Koh, Jungsoo Park, Hyoungjun Kim
{"title":"Enhanced Westwood+ TCP for Wireless/Heterogeneous Networks","authors":"Cui Lin, S. Koh, Jungsoo Park, Hyoungjun Kim","doi":"10.1109/APCC.2006.255814","DOIUrl":"https://doi.org/10.1109/APCC.2006.255814","url":null,"abstract":"Westwood/Westwood+ TCP is well known by its effective AIAD (additive increase and adaptive decrease) bandwidth estimation algorithm. In this paper, we propose an enhanced Westwood+ scheme for wireless/heterogeneous networks with a high random bit error rate (BER), in which the sender is introduced with the following three characteristics: 1) to consider the impact of corruption strength in bandwidth estimation; 2) to reset new slow start threshold (ssthresh) and congestion window (cwnd) after receiving every special ACK with random bit error event's information; 3) to effectively avoid the unwanted timeouts which can be induced in conventional TCP in the case that the retransmitted packets are corrupted in wireless channel. Simulation results show that in the heterogeneous network with 1% fixed packet corruption rate as well as variational packet loss rate, the proposed scheme could achieve prominent improvements in goodput over Westwood+, NewReno and Reno TCP, respectively, in most cases","PeriodicalId":205758,"journal":{"name":"2006 Asia-Pacific Conference on Communications","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126336781","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
Performance of STF Coded OFDM with Transmit Eigenbeamforming in Correlated Fading Channels 相关衰落信道中具有发射特征波束形成的STF编码OFDM性能
2006 Asia-Pacific Conference on Communications Pub Date : 2006-12-11 DOI: 10.1109/APCC.2006.255778
K.H. Lin, Z. M. Hussain
{"title":"Performance of STF Coded OFDM with Transmit Eigenbeamforming in Correlated Fading Channels","authors":"K.H. Lin, Z. M. Hussain","doi":"10.1109/APCC.2006.255778","DOIUrl":"https://doi.org/10.1109/APCC.2006.255778","url":null,"abstract":"A new transmit diversity configuration that combines transmit eigenbeamforming with space-time-frequency (STF) coding for orthogonal frequency division multiplex (OFDM) systems is investigated. Based on the signal angle-of-arrival (AoA) estimates, channel correlation matrix is constructed. It is shown that signal transmission of STF codes in the eigen-modes of this matrix gives an effective array weighting gain which improves system error performance without sacrificing any diversity and coding gain. For imperfect AoA estimation, error probability loss due to incorrect estimation is quantified and the required accuracy of AoA estimation for securing the performance gain is shown for different angular spreads","PeriodicalId":205758,"journal":{"name":"2006 Asia-Pacific Conference on Communications","volume":"291 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130282371","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
A Hierarchial MDL Based Approach for the Selection of Significant Channel Parameters in OFDM Systems 一种基于分层MDL的OFDM系统重要信道参数选择方法
2006 Asia-Pacific Conference on Communications Pub Date : 2006-12-11 DOI: 10.1109/APCC.2006.255836
A. El-Sallam, H. H. Dam, S. Nordholm
{"title":"A Hierarchial MDL Based Approach for the Selection of Significant Channel Parameters in OFDM Systems","authors":"A. El-Sallam, H. H. Dam, S. Nordholm","doi":"10.1109/APCC.2006.255836","DOIUrl":"https://doi.org/10.1109/APCC.2006.255836","url":null,"abstract":"The paper considers a hierarchial minimum description length (MDL) based model selection method for the identification (classification) of significant channel parameters in OFDM systems. Unlike many OFDM channel estimation methods, where the channel parameters are estimated based on a known or an estimated length, in this paper, not only the channel length is assumed to be unknown but also only significant channel parameters will be identified using the proposed method. Firstly, a model is proposed for the channel response. By using a training based scenario, the model parameters are estimated using least squares (LS) or IFFT. Based on those estimates, an MDL model selection method is used to estimate the channel length and classify each significant parameter of the channel response. Simulation results show that the method is capable of identifying (classifying) significant channel parameters with high probability. In addition a receiver based on those parameters have a better performance than the one which based on the full model","PeriodicalId":205758,"journal":{"name":"2006 Asia-Pacific Conference on Communications","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134571980","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
An Efficient Peak-to-Average Power Ratio Reduction Algorithm for WiMAX System 一种有效的WiMAX系统峰均功率比降低算法
2006 Asia-Pacific Conference on Communications Pub Date : 2006-12-11 DOI: 10.1109/APCC.2006.255867
Haitao Xiong, Ping Wang, Z. Bu
{"title":"An Efficient Peak-to-Average Power Ratio Reduction Algorithm for WiMAX System","authors":"Haitao Xiong, Ping Wang, Z. Bu","doi":"10.1109/APCC.2006.255867","DOIUrl":"https://doi.org/10.1109/APCC.2006.255867","url":null,"abstract":"In order to decrease implementation complexity, a method which can effectively reduce the peak-to-average power ratio (PAPR) of the WiMAX system is proposed. We firstly oversample the WiMAX system, then normalize, finally clip and filter the signals. Improvements on PAPR reduction, out-of-band radiation and bit error rate performances are discussed in this paper. Simulation results show that the proposed method can effectively reduce the PAPR of WiMAX system","PeriodicalId":205758,"journal":{"name":"2006 Asia-Pacific Conference on Communications","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130711570","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: 9
Channel Capacity of Differential Amplitude Pulse-Position Modulation (DAPPM) over Indoor Optical Wireless Communications 差分幅度脉冲位置调制(DAPPM)在室内无线光通信中的信道容量
2006 Asia-Pacific Conference on Communications Pub Date : 2006-12-11 DOI: 10.1109/APCC.2006.255857
U. Sethakaset, T. Gulliver
{"title":"Channel Capacity of Differential Amplitude Pulse-Position Modulation (DAPPM) over Indoor Optical Wireless Communications","authors":"U. Sethakaset, T. Gulliver","doi":"10.1109/APCC.2006.255857","DOIUrl":"https://doi.org/10.1109/APCC.2006.255857","url":null,"abstract":"Differential amplitude pulse-position modulation (AtimesL-DAPPM) over an indoor optical wireless link can be represented as a Markov source transmitted over a finite-state machine channel. The state-transition probabilities that maximize the information rate are determined by using expectation-maximization. Then, the channel capacity of DAPPM is obtained and compared to that of pulse-position modulation (L-PPM) and differential pulse-position modulation (L-DPPM). It is shown that DAPPM achieves a higher capacity and is less sensitive to multipath dispersion than PPM and DPPM","PeriodicalId":205758,"journal":{"name":"2006 Asia-Pacific Conference on Communications","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117340257","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
Proposal of Flexible Interface Technology for Multidomain/Multivendor Network Management 面向多域/多厂商网络管理的柔性接口技术
2006 Asia-Pacific Conference on Communications Pub Date : 2006-12-11 DOI: 10.1109/APCC.2006.255911
Y. Otsuka, T. Kimura, Y. Miyoshi, M. Nakatsuji, A. Fukuda
{"title":"Proposal of Flexible Interface Technology for Multidomain/Multivendor Network Management","authors":"Y. Otsuka, T. Kimura, Y. Miyoshi, M. Nakatsuji, A. Fukuda","doi":"10.1109/APCC.2006.255911","DOIUrl":"https://doi.org/10.1109/APCC.2006.255911","url":null,"abstract":"The expansion of IP broadband services in recent years have prompted various services on IP network infrastructures to be developed in a short time. We propose flexible system cooperation using ontology-mapping technology based on a semantic concept and interface blending/diagnosis technology using script language in a multidomain/multivendor environment","PeriodicalId":205758,"journal":{"name":"2006 Asia-Pacific Conference on Communications","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122068253","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
Case Study on Transaction Level Modeling of NoC based IEEE 802.11n 基于IEEE 802.11n的NoC事务级建模实例研究
2006 Asia-Pacific Conference on Communications Pub Date : 2006-12-11 DOI: 10.1109/APCC.2006.255848
S. Yoon, Sin-Chong Park
{"title":"Case Study on Transaction Level Modeling of NoC based IEEE 802.11n","authors":"S. Yoon, Sin-Chong Park","doi":"10.1109/APCC.2006.255848","DOIUrl":"https://doi.org/10.1109/APCC.2006.255848","url":null,"abstract":"In this paper, we design IEEE 802.11n WLAN receiver with the MIMO-OFDM technology based on network on chip platform. The transaction level analysis of IEEE 802.11n is performed and SW/HW partitioning is performed in terms of real-time requirement of system. Then SW and HW cores are mapped to NoC architecture. System performance of NoC is compared to bus architecture","PeriodicalId":205758,"journal":{"name":"2006 Asia-Pacific Conference on Communications","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117238565","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
The Performance Study of TCP Veno Under Different Recovery Schemes 不同开采方案下TCP输油管性能研究
2006 Asia-Pacific Conference on Communications Pub Date : 2006-12-11 DOI: 10.1109/APCC.2006.255811
Ke Zhang, C. Fu
{"title":"The Performance Study of TCP Veno Under Different Recovery Schemes","authors":"Ke Zhang, C. Fu","doi":"10.1109/APCC.2006.255811","DOIUrl":"https://doi.org/10.1109/APCC.2006.255811","url":null,"abstract":"TCP Veno was recently proposed to eliminate TCP performance suffering in the wireless networks. Real network and live Internet measurements have validated Veno's significant performance improvement over Reno. In this paper, we revisit Veno's state distinguishing scheme, and give a detailed study of Veno's performance when three different recovery schemes: Partial ACK, SACK and PACK, are incorporated. Our network simulation and real testbed results show that Veno's state distinguishing scheme can make recovery phase more efficient","PeriodicalId":205758,"journal":{"name":"2006 Asia-Pacific Conference on Communications","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126181279","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
Online Load Balancing for Energy-Aware Anycast Routing 能量感知任播路由的在线负载均衡
2006 Asia-Pacific Conference on Communications Pub Date : 2006-12-11 DOI: 10.1109/APCC.2006.255824
M. Iqbal, I. Gondal, L. Dooley
{"title":"Online Load Balancing for Energy-Aware Anycast Routing","authors":"M. Iqbal, I. Gondal, L. Dooley","doi":"10.1109/APCC.2006.255824","DOIUrl":"https://doi.org/10.1109/APCC.2006.255824","url":null,"abstract":"Anycast routing offers a flexible paradigm for resource constrained, ad hoc sensor networks, where sensors can route data to any available server. The selection policy of servers in an anycast scenario could assist in keeping the network operating quiescently for a required time frame. This paper proposes a novel load balancing model to make anycast routing decisions based on route efficiency, and remaining life-times of the servers. The model makes use of the historical load and channel capacity profiles to accurately estimate the remaining life of each server. The results show that the proposed technique achieves effective reconfiguration performance to meet the network time-to-live requirement and also maintains better load-balance with anycast routing protocol","PeriodicalId":205758,"journal":{"name":"2006 Asia-Pacific Conference on Communications","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130694187","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
Forgery Attack on a Signature Scheme with Message Recovery 消息恢复签名方案的伪造攻击
2006 Asia-Pacific Conference on Communications Pub Date : 2006-12-11 DOI: 10.1109/APCC.2006.255891
Baozheng Yu, Congwei Xu
{"title":"Forgery Attack on a Signature Scheme with Message Recovery","authors":"Baozheng Yu, Congwei Xu","doi":"10.1109/APCC.2006.255891","DOIUrl":"https://doi.org/10.1109/APCC.2006.255891","url":null,"abstract":"Recently, M. Sekhar gave a digital signature scheme with message recovery, where only a specific verifier can directly check the validity of the signature. A third party can distinguish a valid signature through a zero-knowledge proof protocol. However we find that the proposed scheme is insecure. A forgery attack strategy on M. Sekhar's scheme has been designed; anyone who has a valid signature can forge a signature on an arbitrary message. An improved signature scheme, which can resist the forgery attack and a zero-knowledge proof protocol with which a third party can distinguish a valid signature are presented. Also, the security of the improved scheme is analyzed","PeriodicalId":205758,"journal":{"name":"2006 Asia-Pacific Conference on Communications","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132165083","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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