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IEEE GLOBECOM 2008 - 2008 IEEE Global Telecommunications Conference最新文献

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Efficient M-QAM Transmission Using Compacted Magnitude Modulation Tables 使用压缩幅度调制表的高效M-QAM传输
IEEE GLOBECOM 2008 - 2008 IEEE Global Telecommunications Conference Pub Date : 2008-12-08 DOI: 10.1109/GLOCOM.2008.ECP.895
M. Gomes, F. Cercas, V. Silva, M. Tomlinson
{"title":"Efficient M-QAM Transmission Using Compacted Magnitude Modulation Tables","authors":"M. Gomes, F. Cercas, V. Silva, M. Tomlinson","doi":"10.1109/GLOCOM.2008.ECP.895","DOIUrl":"https://doi.org/10.1109/GLOCOM.2008.ECP.895","url":null,"abstract":"Magnitude Modulation is a technique proposed with success for QPSK and OQPSK in order to maximize power and bandwidth of small satellite earth stations, by reducing PAPR of the modulated signal at the HPA input. To meet the ever growing demand for higher data rates, higher order modulations have been considered. This paper shows that it is possible to use the magnitude modulation concept for the M-QAM case, even considering the huge number of symbol combinations. The constellation and RRC symmetries are explored, allowing considerable reduction on look-up table computation complexity and storage requirements. Experimental results show considerable gains (>2dB) in PAPR and back-off reduction for 16-QAM with negligible BER losses.","PeriodicalId":297815,"journal":{"name":"IEEE GLOBECOM 2008 - 2008 IEEE Global Telecommunications Conference","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117040958","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: 12
The Least Reusable Channel Burst Scheduling Discipline 最小复用信道突发调度原则
IEEE GLOBECOM 2008 - 2008 IEEE Global Telecommunications Conference Pub Date : 2008-12-08 DOI: 10.1109/GLOCOM.2008.ECP.268
G. Figueiredo, N. Fonseca
{"title":"The Least Reusable Channel Burst Scheduling Discipline","authors":"G. Figueiredo, N. Fonseca","doi":"10.1109/GLOCOM.2008.ECP.268","DOIUrl":"https://doi.org/10.1109/GLOCOM.2008.ECP.268","url":null,"abstract":"This paper presents a novel channel scheduling discipline for optical burst switching networks called Least Reusable Channel (LRC). LRC decides on which void to allocate an incoming burst based on the potentiality of reusing the voids created. These decisions consider the routes as well as the network load. It is shown via numerical examples that the LRC produces lower blocking probability and distributes more uniformly the losses among routes than existing scheduling disciplines.","PeriodicalId":297815,"journal":{"name":"IEEE GLOBECOM 2008 - 2008 IEEE Global Telecommunications Conference","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117092895","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
Performance Comparison between NEMO BSP and SINEMO NEMO BSP与SINEMO的性能比较
IEEE GLOBECOM 2008 - 2008 IEEE Global Telecommunications Conference Pub Date : 2008-12-08 DOI: 10.1109/GLOCOM.2008.ECP.461
Md. Sazzadur Rahman, Outman Bouidel, Mohammed Atiquzzaman, W. Ivancic
{"title":"Performance Comparison between NEMO BSP and SINEMO","authors":"Md. Sazzadur Rahman, Outman Bouidel, Mohammed Atiquzzaman, W. Ivancic","doi":"10.1109/GLOCOM.2008.ECP.461","DOIUrl":"https://doi.org/10.1109/GLOCOM.2008.ECP.461","url":null,"abstract":"IETF has proposed mobile IPv6-based network mobility (NEMO) basic support protocol (BSP) to support network mobility. NEMO BSP inherits all the drawbacks of mobile IPv6, such as inefficient routing path, single point of failure, high handover latency and high packet overhead. To address these drawbacks, a new network mobility scheme, called seamless IP-diversity based network mobility (SINEMO), has been proposed. The goal of this paper is to validate with experimental data that SINEMO performs better than NEMO BSP. We show that SINEMO can improve the performance of IP based mobile networks.","PeriodicalId":297815,"journal":{"name":"IEEE GLOBECOM 2008 - 2008 IEEE Global Telecommunications Conference","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129581234","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
Partially Reliable-Concurrent Multipath Transfer (PR-CMT) for Multihomed Networks 多宿主网络的部分可靠并发多路径传输(PR-CMT)
IEEE GLOBECOM 2008 - 2008 IEEE Global Telecommunications Conference Pub Date : 2008-12-08 DOI: 10.1109/GLOCOM.2008.ECP.479
Chung-Ming Huang, Ming-Sian Lin
{"title":"Partially Reliable-Concurrent Multipath Transfer (PR-CMT) for Multihomed Networks","authors":"Chung-Ming Huang, Ming-Sian Lin","doi":"10.1109/GLOCOM.2008.ECP.479","DOIUrl":"https://doi.org/10.1109/GLOCOM.2008.ECP.479","url":null,"abstract":"In this paper, we proposed a partially reliable - concurrent multipath transfer (PR-CMT) that is featured with partially reliable multi-path transmission based on the concurrent multipath transfer (CMT) and the stream control transmission protocol partial reliability extension (PR-SCTP). The proposed partially reliable transmission is realized by the \"timed reliable service\". Data in PR-CMT are associated with lifetime. When the lifetime of the data is expired, PR-CMT would not transmit and retransmit the expired data. The false acked TSNs problem is identified in PR-SCTP and CMT. In this paper, the proposed PR-CMT can adopt some mechanisms to eliminate the false acked transmission sequence numbers (TSNs) problem. Simulation results show that PR-CMT can (i) have better transmission efficiency and (ii) consume less bandwidth.","PeriodicalId":297815,"journal":{"name":"IEEE GLOBECOM 2008 - 2008 IEEE Global Telecommunications Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129781008","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: 15
Differential Distributed Space-Frequency Coding for Broadband Non-Regenerative Wireless Relaying Systems 宽带非再生无线中继系统的差分分布空频编码
IEEE GLOBECOM 2008 - 2008 IEEE Global Telecommunications Conference Pub Date : 2008-12-08 DOI: 10.1109/GLOCOM.2008.ECP.746
Jing Xu, Shihua Zhu, Zhimeng Zhong
{"title":"Differential Distributed Space-Frequency Coding for Broadband Non-Regenerative Wireless Relaying Systems","authors":"Jing Xu, Shihua Zhu, Zhimeng Zhong","doi":"10.1109/GLOCOM.2008.ECP.746","DOIUrl":"https://doi.org/10.1109/GLOCOM.2008.ECP.746","url":null,"abstract":"Exploiting the desirable properties of cyclic group coding, we develop a full-rate differential distributed space- frequency coding (DSFC) in the frequency domain for broadband non-regenerative wireless relaying systems. The pairwise error probability analysis demonstrates that our scheme guarantees a diversity order of Gd les min{ML1, ML2}, where M is the number of the relay nodes, and L1 and L2 are the number of taps of source-to-relay and relay-to-destination channels, respectively. A novel subcarrier allocation method without channel state information (CSI) at any node is proposed to improve the diversity product. Moreover, for an arbitrary number of relays, a competitive non-regenerative DSFC proposed by Zhang et. aL, is extended to differential transmission incorporated with the proposed subcarrier allocation method for fair comparison. Both theoretical analysis and simulation results confirm that the proposed DSFC outperforms Zhang's scheme significantly in the differential case.","PeriodicalId":297815,"journal":{"name":"IEEE GLOBECOM 2008 - 2008 IEEE Global Telecommunications Conference","volume":"109 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128613864","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 Lattice Precoding for Flat-Fading MIMO Channels Based on Eigenvalue Decomposition 基于特征值分解的平面衰落MIMO信道点阵预编码
IEEE GLOBECOM 2008 - 2008 IEEE Global Telecommunications Conference Pub Date : 2008-12-08 DOI: 10.1109/GLOCOM.2008.ECP.611
Jin He, M. Salehi
{"title":"A Lattice Precoding for Flat-Fading MIMO Channels Based on Eigenvalue Decomposition","authors":"Jin He, M. Salehi","doi":"10.1109/GLOCOM.2008.ECP.611","DOIUrl":"https://doi.org/10.1109/GLOCOM.2008.ECP.611","url":null,"abstract":"A novel Lattice Precoding scheme based on Eigenvalue decomposition (EDLP) is proposed for single user multiple- input multiple-output (MIMO) communication systems transmitting over slowly-varying flat-fading channels. This technique uses linear precoding to orthogonalize the channels, thus nullifying the interference. It employs a perturbation vector as well to reduce the transmitted power. The performance is enhanced by joint optimization of the linear precoder and the perturbation vector. As a result, the EDLP achieves not only full diversity order, but also significant power gain over comparable techniques. Although this structure enables EDLP to perform a global optimization on the closest lattice point search problem, the computational complexity of this nonlinear lattice precoding is comparable to linear techniques. Furthermore, the complexity at the receiver is kept constrained. When channel estimation errors are present, the proposed EDLP technique exhibits its robustness compared to other lattice precoding techniques.","PeriodicalId":297815,"journal":{"name":"IEEE GLOBECOM 2008 - 2008 IEEE Global Telecommunications Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129310412","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
Congestion Aware Routing Strategies for DTN-Based Interplanetary Networks 基于dtn的星际网络的拥塞感知路由策略
IEEE GLOBECOM 2008 - 2008 IEEE Global Telecommunications Conference Pub Date : 2008-12-08 DOI: 10.1109/GLOCOM.2008.ECP.262
I. Bisio, M. Marchese, Tomaso de Cola
{"title":"Congestion Aware Routing Strategies for DTN-Based Interplanetary Networks","authors":"I. Bisio, M. Marchese, Tomaso de Cola","doi":"10.1109/GLOCOM.2008.ECP.262","DOIUrl":"https://doi.org/10.1109/GLOCOM.2008.ECP.262","url":null,"abstract":"The networking and communication challenges posed by interplanetary environments make the design and the deployment of complex telecommunication infrastructures particularly difficult, especially with regard to routing and congestion control issues. To this end, the paper proposes a congestion-aware routing paradigm that applies multi attribute decision making (MADM) concepts for next-hop selection, by formulating an optimisation problem and proposing some possible resolution criteria. Effectiveness of the proposed solutions is assessed through a preliminary performance analysis that shows promising results.","PeriodicalId":297815,"journal":{"name":"IEEE GLOBECOM 2008 - 2008 IEEE Global Telecommunications Conference","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130517600","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: 41
COMB: Cell Based Orientation Aware MANET Broadcast MAC Layer 基于单元的方向感知MANET广播MAC层
IEEE GLOBECOM 2008 - 2008 IEEE Global Telecommunications Conference Pub Date : 2008-12-08 DOI: 10.1109/GLOCOM.2008.ECP.1036
C. Garcia, A. Lehner, T. Strang
{"title":"COMB: Cell Based Orientation Aware MANET Broadcast MAC Layer","authors":"C. Garcia, A. Lehner, T. Strang","doi":"10.1109/GLOCOM.2008.ECP.1036","DOIUrl":"https://doi.org/10.1109/GLOCOM.2008.ECP.1036","url":null,"abstract":"The design of a collision avoidance system for trains implies the design of a MAC layer for their specific requirements. It should be efficient, reliable, use broadcast and support wireless mobile ad hoc networks (MANETs) with high user speeds. Therefore we are using awareness techniques, which allow a certain channel assignment, despite the absence of infrastructure. This paper presents a new MAC layer protocol designed for broadcast MANETs called COMB (Cell-based Orientation-aware MANET Broadcast). In principle, COMB allows the realization of a collision free transmission, high speed is supported and no handshake is required. COMB is based on localization aware cross layer dimensioned CDMA cells, and uses the SOTDMA protocol as intra cell scheme, while the inter cell scheme relies on direction and speed awareness.","PeriodicalId":297815,"journal":{"name":"IEEE GLOBECOM 2008 - 2008 IEEE Global Telecommunications Conference","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126682500","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
An Emerging Concatenated Multitone Air Interface for High Speed Access and Home Wireless Networks 一种用于高速接入和家庭无线网络的新兴连接多音空中接口
IEEE GLOBECOM 2008 - 2008 IEEE Global Telecommunications Conference Pub Date : 2008-12-08 DOI: 10.1109/GLOCOM.2008.ECP.546
A. Tonello, M. Bellin
{"title":"An Emerging Concatenated Multitone Air Interface for High Speed Access and Home Wireless Networks","authors":"A. Tonello, M. Bellin","doi":"10.1109/GLOCOM.2008.ECP.546","DOIUrl":"https://doi.org/10.1109/GLOCOM.2008.ECP.546","url":null,"abstract":"This paper presents further enhancements to a recently proposed air interface that concatenates an inner filtered multitone (FMT) modulator with transmission over multiple antennas, and an outer space-time cyclically prefixed discrete multitone (ST-CP- DMT) modulator with frequency domain data spreading. We focus on the uplink with asynchronous mobile devices. The contribution is threefold. Firstly, we show an efficient implementation of the transmitter. Secondly, we propose an efficient multiuser receiver architecture that requires a single polyphase filter bank and a concatenation of DFTs. Thirdly, we analyze time domain pre- equalization (TEQ) to shorten the equivalent channel impulse response between the FMT filter bank output and the ST-CP-DMT receiver. The proposed multiuser receiver outperforms the bank of synchronous single user receivers yet requiring less complexity. TEQ has the potentiality of improving performance in severely dispersive channels, and to increase transmission rate since the DMT stage can use shorter cyclic prefix (CP).","PeriodicalId":297815,"journal":{"name":"IEEE GLOBECOM 2008 - 2008 IEEE Global Telecommunications Conference","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126815561","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
Collaborative Transmit Power Adaptive Optical Wireless System for an Indoor Channel 一种室内信道协同发射功率自适应光无线系统
IEEE GLOBECOM 2008 - 2008 IEEE Global Telecommunications Conference Pub Date : 2008-12-08 DOI: 10.1109/GLOCOM.2008.ECP.523
J. Alattar, J. Elmirghani
{"title":"Collaborative Transmit Power Adaptive Optical Wireless System for an Indoor Channel","authors":"J. Alattar, J. Elmirghani","doi":"10.1109/GLOCOM.2008.ECP.523","DOIUrl":"https://doi.org/10.1109/GLOCOM.2008.ECP.523","url":null,"abstract":"We propose a novel optical wireless (OW) system based on power adaptive multi-beam spot diffusing transmitter serving multiple 7-segment MRC angle diversity receivers. A feedback link is assumed between the transceivers so that the receiver conveys to the multi-beam transmitter the new beams transmit power weights to be used in order to achieve the best signal quality at a given receiver location. The performance of a sample case of three receivers placed in different configurations in the room is evaluated in terms of signal-to-noise ratio (SNR) and is compared with the single receiver scenario with and without a power adaptation. In the presence of one receiver, the transmit spot powers can be adjusted for optimum performance at that receiver location. For multiple receivers, there is conflict and we propose spot power adaptation based on the average requirements (power distribution in spots), i.e., EGC of spot power or MRC combining of spot powers. The results showed that the three receivers benefit most from an adaptive transmitter when each is placed at a corner of the room. In this case, as much as 2.8 dB increase in SNR is achieved for all three receivers at the corners. Moreover, a considerable SNR gain (1.8 dB) is also obtained when all receivers lie directly under the line of diffusing spots. Although the performance of the collaborative transmitter when all three receivers were located near room wall produced very minimal improvement, none of the receivers suffered any decrease in SNR.","PeriodicalId":297815,"journal":{"name":"IEEE GLOBECOM 2008 - 2008 IEEE Global Telecommunications Conference","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127035037","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
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