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2010 IEEE International Conference on Communications最新文献

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Novel Distributed Multirate Data and Storage Management as a Reliability Booster for Challenged Ad-Hoc and Sensor Networks 新型分布式多速率数据和存储管理作为具有挑战性的Ad-Hoc和传感器网络的可靠性助推器
2010 IEEE International Conference on Communications Pub Date : 2010-05-23 DOI: 10.1109/ICC.2010.5502567
A. Kabashi, J. Elmirghani
{"title":"Novel Distributed Multirate Data and Storage Management as a Reliability Booster for Challenged Ad-Hoc and Sensor Networks","authors":"A. Kabashi, J. Elmirghani","doi":"10.1109/ICC.2010.5502567","DOIUrl":"https://doi.org/10.1109/ICC.2010.5502567","url":null,"abstract":"This study introduces a new concept of using data and storage management techniques to boost the reliability of challenged ad hoc and sensor networks by mitigating the effects of link and graph connectivity outages. Novel distributed uniform and multi-rate storage management approaches are proposed and through proper modeling of the stochastic disconnectivity patterns, network heterogeneity degrees, data resolution thresholds and various network design parameters, this work shows how these techniques can improve the overall network performance. Both analytical and simulation results are presented and various sensitivities are thoroughly investigated to give the network designer solid guidelines.","PeriodicalId":6405,"journal":{"name":"2010 IEEE International Conference on Communications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83639597","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
Next Mobile Network Architecture 下一代移动网络架构
2010 IEEE International Conference on Communications Pub Date : 2010-05-23 DOI: 10.1109/ICC.2010.5502786
M. Yabusaki, Y. Okumura, M. Tamura
{"title":"Next Mobile Network Architecture","authors":"M. Yabusaki, Y. Okumura, M. Tamura","doi":"10.1109/ICC.2010.5502786","DOIUrl":"https://doi.org/10.1109/ICC.2010.5502786","url":null,"abstract":"This paper proposes a general architecture for the Next Mobile Network (NMN). NMN is composed of four planes: Advanced Mobile Access (AMA), Optical Mobile Network (OMN), Virtual Mobile Network (VMN), and Service Delivery Network (SDN). AMA, OMN, and VMN are revolutionary additions while SDN is an enhancement of that found in the All-IP network as SDP (Service Delivery Platform). NMN aims at offering sophisticated services along three service directions, \"Multimedia\", \"Ubiquitous\", and \"Global\". This paper describes the research being done on key NMN component technologies, e.g., advanced radio transmission, mobility management over the optical and virtual network, and ubiquitous service management.","PeriodicalId":6405,"journal":{"name":"2010 IEEE International Conference on Communications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90674142","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
Performance Evaluation of the Markov Chain Monte Carlo MIMO Detector based on Mutual Information 基于互信息的马尔可夫链蒙特卡罗MIMO检测器性能评价
2010 IEEE International Conference on Communications Pub Date : 2010-05-23 DOI: 10.1109/ICC.2010.5502082
M. Senst, G. Ascheid, Helge Lüders
{"title":"Performance Evaluation of the Markov Chain Monte Carlo MIMO Detector based on Mutual Information","authors":"M. Senst, G. Ascheid, Helge Lüders","doi":"10.1109/ICC.2010.5502082","DOIUrl":"https://doi.org/10.1109/ICC.2010.5502082","url":null,"abstract":"Recently, MIMO detectors which are based on Markov Chain Monte Carlo (MCMC) simulation techniques have been proposed as alternatives to, e.g., the well-known sphere detector. In this paper, we present a systematic analysis of the performance of MCMC detectors. We study the impact of several parameters such as the list size and the number of independently running chains. As a performance criterion, our analysis is based on the mutual information over an equivalent modulation channel, rather than on coded bit error rates, because this metric is independent of the outer channel code and provides valuable insights over the whole SNR range of interest. Furthermore, we show that combining the MCMC detector with a hard-output sphere detector removes the error floor at high SNR, which is a well-known problem of the MCMC principle.","PeriodicalId":6405,"journal":{"name":"2010 IEEE International Conference on Communications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89815108","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 Simple Statistical Model for Turbulence-Induced Fading in Free-Space Optical Systems 自由空间光学系统湍流衰落的简单统计模型
2010 IEEE International Conference on Communications Pub Date : 2010-05-23 DOI: 10.1109/ICC.2010.5502065
N. Chatzidiamantis, H. Sandalidis, G. Karagiannidis, M. Matthaiou
{"title":"A Simple Statistical Model for Turbulence-Induced Fading in Free-Space Optical Systems","authors":"N. Chatzidiamantis, H. Sandalidis, G. Karagiannidis, M. Matthaiou","doi":"10.1109/ICC.2010.5502065","DOIUrl":"https://doi.org/10.1109/ICC.2010.5502065","url":null,"abstract":"In this paper, we propose the Inverse Gaussian (IG) distribution, as a less complex alternative to Log-normal (LN), to describe turbulence-induced fading in free-space optical (FSO) systems operating in weak turbulence conditions and/or in the presence of a large amount of aperture averaging. By conducting goodness of fit tests, we define the range of values of the scintillation index, where the two distributions approximate each other, with a certain significance level. The efficiency of the new model is pointed out by deriving analytical expressions for the calculation of the bit-error rate of two typical FSO systems; an intensity-modulation/direct detection FSO system with M-ary pulse position modulation and a heterodyne FSO system with differential phase shift keying. Numerical examples are provided to clearly illustrate the accuracy of the proposed approach in the weak turbulence regime.","PeriodicalId":6405,"journal":{"name":"2010 IEEE International Conference on Communications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91288667","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: 8
Connection Scheduling in Wavelength-Constrained Optical Time-Slotted Networks 波长受限光时隙网络中的连接调度
2010 IEEE International Conference on Communications Pub Date : 2010-05-23 DOI: 10.1109/ICC.2010.5502657
A. Gadkar, S. Subramaniam
{"title":"Connection Scheduling in Wavelength-Constrained Optical Time-Slotted Networks","authors":"A. Gadkar, S. Subramaniam","doi":"10.1109/ICC.2010.5502657","DOIUrl":"https://doi.org/10.1109/ICC.2010.5502657","url":null,"abstract":"An all-optical approach to achieve finer bandwidth granularity is to time division multiplex low capacity circuits on each wavelength channel and to switch time-wavelength slots within the network. In such a Time-Wavelength-Switched- Network (TWSN), the Time-Wavelength-Space-Routers (TWSRs) are configured to change their routing pattern on a time slot basis. Another kind of time slotted network proposed in the literature is the Time-Wavelength-Interleaved Network (TWIN), which eliminates time switching within the network by using a non-reconfigurable core and an intelligent edge utilizing a fast tunable laser to emulate fast switching. A drawback of the TWIN network is that it assigns a unique wavelength to each node in the network. Thus it requires a total of W = N wavelengths for an N-node network and hence is not scalable. In this paper we propose to design a wavelength-constrained (i.e., W < N) TWIN network with no switching (TWIN-NS) by using a multicasting strategy. We also propose a variant of the TWIN network which possesses switching capabilities only at the edge nodes (TWIN-ES), and compare the performances of these TWIN networks to that of the TWSN. We present integer linear programs and heuristic algorithms to solve the connection scheduling problem in the TWSN and the TWIN, and investigate the benefits of having a fast reconfigurable switch as opposed to a non-reconfigurable core.","PeriodicalId":6405,"journal":{"name":"2010 IEEE International Conference on Communications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89578905","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
Joint Optimization for Source and Relay Precoding under Multiuser MIMO Downlink Channels 多用户MIMO下行信道下源中继预编码联合优化
2010 IEEE International Conference on Communications Pub Date : 2010-05-23 DOI: 10.1109/ICC.2010.5501938
Wei Xu, Xiaodai Dong, Wu-Sheng Lu
{"title":"Joint Optimization for Source and Relay Precoding under Multiuser MIMO Downlink Channels","authors":"Wei Xu, Xiaodai Dong, Wu-Sheng Lu","doi":"10.1109/ICC.2010.5501938","DOIUrl":"https://doi.org/10.1109/ICC.2010.5501938","url":null,"abstract":"This paper investigates the joint precoding optimization problem for a relay-assisted multi- antenna downlink system. Aiming at multiuser sum capacity maximization, we first propose an iterative optimization algorithm which exploits quadratic programming approaches. We observe that the iterative method always yields the optimized precoding matrices which diagonalize the compound channel of the system at high SNR regimes. Inspired by this observation, we further develop an efficient source and relay precoding strategy by diagonalizing the compound channel of the backward (source-to- relay) and the forward (relay-to-destination) links. Simulation results verify the effectiveness of our proposed precoding schemes.","PeriodicalId":6405,"journal":{"name":"2010 IEEE International Conference on Communications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90523946","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: 24
Error-Rate Approximations for Bit-Interleaved Coded Modulation: A Flexible Analytical Approach 位交错编码调制的误码率近似:一种灵活的分析方法
2010 IEEE International Conference on Communications Pub Date : 2010-05-23 DOI: 10.1109/ICC.2010.5501998
Alireza Kenarsari-Anhari, L. Lampe
{"title":"Error-Rate Approximations for Bit-Interleaved Coded Modulation: A Flexible Analytical Approach","authors":"Alireza Kenarsari-Anhari, L. Lampe","doi":"10.1109/ICC.2010.5501998","DOIUrl":"https://doi.org/10.1109/ICC.2010.5501998","url":null,"abstract":"Bit-interleaved coded modulation (BICM) has established itself as the prevalent coded modulation scheme for wireless communication systems. There are a number of semi-analytical approaches for BICM performance analysis, all of which have limitations in terms of applicability and/or complexity. In this paper, we present a novel analytical approach to approximate the bit error rate (BER) of BICM. Our approach is unified in the sense that a (i) large class of fading channels, (ii) arbitrary labeling rules, and (iii) all common signal constellations are encompassed, and it is preferable over previous work in that we provide closed-form expressions. We also derive expressions for the asymptotic BER, which reveals the diversity order and coding gain of BICM transmission over fading channels. The accuracy of proposed analytical approximations is validated through comparison with selective simulation results.","PeriodicalId":6405,"journal":{"name":"2010 IEEE International Conference on Communications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88468663","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
Spectrum Sensing of OFDM Waveforms Using Embedded Pilot Subcarriers 基于嵌入式导频子载波的OFDM波形频谱感知
2010 IEEE International Conference on Communications Pub Date : 2010-05-23 DOI: 10.1109/ICC.2010.5502821
Arash Zahedi-Ghasabeh, A. Tarighat, B. Daneshrad
{"title":"Spectrum Sensing of OFDM Waveforms Using Embedded Pilot Subcarriers","authors":"Arash Zahedi-Ghasabeh, A. Tarighat, B. Daneshrad","doi":"10.1109/ICC.2010.5502821","DOIUrl":"https://doi.org/10.1109/ICC.2010.5502821","url":null,"abstract":"Reliable spectrum sensing is the key requirement for secondary users to utilize the spectrum in the absence of primary users. Given the widespread deployment of OFDM modulation in recent and future multimedia broadcasting and wireless broad-band services, reliable spectrum sensing of OFDM waveforms is of great interest for future cognitive radio systems. This paper presents a new detection method for OFDM waveforms that exploits the available embedded pilot tones without any simplifying assumption or constraints on the pilots. Analytical performance characterization is presented and supported by simulation results for both AWGN and fading channels. This study shows that the new method can improve the performance by 5dB in comparison with other feature detectors.","PeriodicalId":6405,"journal":{"name":"2010 IEEE International Conference on Communications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73490786","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: 19
Threshold-Based Multichannel Access with Energy Constraint 基于阈值的能量约束多通道访问
2010 IEEE International Conference on Communications Pub Date : 2010-05-23 DOI: 10.1109/ICC.2010.5502753
Bo Yang, Yanyan Shen, M. Johansson, X. Guan
{"title":"Threshold-Based Multichannel Access with Energy Constraint","authors":"Bo Yang, Yanyan Shen, M. Johansson, X. Guan","doi":"10.1109/ICC.2010.5502753","DOIUrl":"https://doi.org/10.1109/ICC.2010.5502753","url":null,"abstract":"This paper considers multiaccess control for the uplink in orthogonal-frequency-division-multiple-access (OFDMA) wireless networks. To avoid extensive information exchange with the access point in centralized approaches, we propose a distributed threshold-based scheme, where each user accesses multiple channels simultaneously based on a comparison between measured channel gains and a channel gain threshold. Each user will adapts its channel gain threshold based on local measurements of collision on each channeland the energy consumption for channel contention. The problem is formulated as a constrained non-cooperative game. We show existence and uniqueness of the Nash equilibrium. A gradient-based algorithm is proposed to update the channel gain threshold. Furthermore, the convergence of this algorithm is proved. In addition, for heterogeneous systems, our proposed scheme can maintain multiuser diversity gains considering the time-varying channel gain and energy consumption. Compared with peer distributed OFDMA schemes and random channel selection algorithms, our proposed schemes reduce overhead and achieve a higher throughput.","PeriodicalId":6405,"journal":{"name":"2010 IEEE International Conference on Communications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76600564","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 Software Defined Radio Based Adaptive Interference Avoidance TDCS Cognitive Radio 一种基于软件定义无线电的自适应干扰避免TDCS认知无线电
2010 IEEE International Conference on Communications Pub Date : 2010-05-23 DOI: 10.1109/ICC.2010.5502779
Ruolin Zhou, Qian Han, Reginald L. Cooper, V. Chakravarthy, Zhiqiang Wu
{"title":"A Software Defined Radio Based Adaptive Interference Avoidance TDCS Cognitive Radio","authors":"Ruolin Zhou, Qian Han, Reginald L. Cooper, V. Chakravarthy, Zhiqiang Wu","doi":"10.1109/ICC.2010.5502779","DOIUrl":"https://doi.org/10.1109/ICC.2010.5502779","url":null,"abstract":"In this paper, we implement and demonstrate an adaptive interference avoidance TDCS (Transform-domain Communication System) based cognitive radio via software defined radio implementation. By dynamically notching the occupied bands prior to applying IDFT, the designed cognitive radio communicates without interference to primary users and from primary users, as well as provides coexistence between primary users and secondary users. The designed system applies GNU software radio as the platform, and USRP (Universal Software Radio Peripheral) as the hardware solution. This cognitive radio is capable of detecting primary users in real time and adaptively adjusting its transmission parameters to avoid interference to primary users. Additionally, we have demonstrated that when the primary user transmission changes, the cognitive radio dynamically adjusts its transmission accordingly. We have demonstrated seamless real time video transmission between two cognitive radio nodes, while avoiding interference from primary users and interference to primary users operating in the same spectrum.","PeriodicalId":6405,"journal":{"name":"2010 IEEE International Conference on Communications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76872780","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: 23
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