2015 IEEE International Black Sea Conference on Communications and Networking (BlackSeaCom)最新文献

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SDN orchestration and virtualization of heterogeneous multi-domain and multi-layer transport networks: The STRAUSS approach 异构多域和多层传输网络的SDN编排和虚拟化:STRAUSS方法
2015 IEEE International Black Sea Conference on Communications and Networking (BlackSeaCom) Pub Date : 2015-05-18 DOI: 10.1109/BlackSeaCom.2015.7185103
R. Muñoz, R. Vilalta, R. Casellas, R. Martínez
{"title":"SDN orchestration and virtualization of heterogeneous multi-domain and multi-layer transport networks: The STRAUSS approach","authors":"R. Muñoz, R. Vilalta, R. Casellas, R. Martínez","doi":"10.1109/BlackSeaCom.2015.7185103","DOIUrl":"https://doi.org/10.1109/BlackSeaCom.2015.7185103","url":null,"abstract":"SDN proposes a logically centralized architecture where the control entity (SDN controller) is responsible for providing an abstraction of network resources through Application Programming Interfaces (API). This abstraction enables SDN to perform network virtualization, that is, to slice the physical infrastructure and create multiple co-existing network slices (virtual networks) independent of the underlying wireless or optical technology and network protocols. Ideally, the SDN architecture is based on a single control domain comprising multiple network nodes featuring diverse technologies provided by different vendors that are controlled through standard interfaces. However, transport network operators usually fragment their networks into multiple domains to cope with administrative and regional organizations. Each domain can be provided by a different vendor with its own control plane technology (SDN/OpenFlow with some proprietary extensions, legacy GMPLS/PCE, MPLS control, etc.). This paper presents the architecture of SDN orchestration and virtualization proposed in the STRAUSS project. The proposed architecture provides a unified transport network operating system allowing the composition, at a an abstracted level, of end-to-end virtual transport networks as well as end-to-end provisioning services across multiple domains with heterogeneous control and transport technologies.","PeriodicalId":162582,"journal":{"name":"2015 IEEE International Black Sea Conference on Communications and Networking (BlackSeaCom)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117344831","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
Impact of echo canceller taps quantization on repeater stability 回声消除器抽头量化对中继器稳定性的影响
2015 IEEE International Black Sea Conference on Communications and Networking (BlackSeaCom) Pub Date : 2015-05-18 DOI: 10.1109/BlackSeaCom.2015.7185112
F. Zabini, Alex Calisti, G. Pasolini
{"title":"Impact of echo canceller taps quantization on repeater stability","authors":"F. Zabini, Alex Calisti, G. Pasolini","doi":"10.1109/BlackSeaCom.2015.7185112","DOIUrl":"https://doi.org/10.1109/BlackSeaCom.2015.7185112","url":null,"abstract":"The most relevant impairment experienced by on-channel repeaters (OCRs) is the presence of a coupling-channel between the transmitting and receiving antennas, that generates unwanted echoes. Echoes critically influence the overall system behavior, with harmful effects on the signal quality and, above all, pose a threat on the system integrity. Echo cancellers are usually adopted, therefore, to remove unwanted coupling contributions. In this paper we investigate the OCR stability problems arising from the joint effect of echo estimation errors and the quantization of the echo-cancelling filter taps. The probability of OCR instability is analytically derived and some performances figures are provided varying the quantization level and the channel model in realistic scenarios.","PeriodicalId":162582,"journal":{"name":"2015 IEEE International Black Sea Conference on Communications and Networking (BlackSeaCom)","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126302426","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
Sub-band precoded OFDM for enhanced physical layer resiliency in wireless communication systems 增强无线通信系统物理层弹性的子带预编码OFDM
2015 IEEE International Black Sea Conference on Communications and Networking (BlackSeaCom) Pub Date : 2015-05-18 DOI: 10.1109/BlackSeaCom.2015.7185074
O. Popescu, D. Popescu
{"title":"Sub-band precoded OFDM for enhanced physical layer resiliency in wireless communication systems","authors":"O. Popescu, D. Popescu","doi":"10.1109/BlackSeaCom.2015.7185074","DOIUrl":"https://doi.org/10.1109/BlackSeaCom.2015.7185074","url":null,"abstract":"Orthogonal Frequency Division Multiplexing (OFDM) is the preferred modulation scheme for current and future broadband wireless systems, and has been incorporated in many standards. In spite of its many benefits, which include robust performance in noise, fading channels and uncorrelated interference, OFDM systems have poor performance in the presence of jamming. In this paper we study the use of sub-band precoding to protect OFDM systems against jamming attacks and enhance their physical layer security.","PeriodicalId":162582,"journal":{"name":"2015 IEEE International Black Sea Conference on Communications and Networking (BlackSeaCom)","volume":"99 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132875738","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
On secrecy rate analysis of spatial modulation and space shift keying 空间调制和空间移位键控的保密率分析
2015 IEEE International Black Sea Conference on Communications and Networking (BlackSeaCom) Pub Date : 2015-05-18 DOI: 10.1109/BlackSeaCom.2015.7185087
S. R. Aghdam, T. Duman, M. Renzo
{"title":"On secrecy rate analysis of spatial modulation and space shift keying","authors":"S. R. Aghdam, T. Duman, M. Renzo","doi":"10.1109/BlackSeaCom.2015.7185087","DOIUrl":"https://doi.org/10.1109/BlackSeaCom.2015.7185087","url":null,"abstract":"Spatial modulation (SM) and space shift keying (SSK) represent transmission methods for low-complexity implementation of multiple-input multiple-output (MIMO) wireless systems in which antenna indices are employed for data transmission. In this paper, we focus our attention on the secrecy behavior of SSK and SM. Using an information-theoretic framework, we derive expressions for the mutual information and consequently compute achievable secrecy rates for SSK and SM via numerical evaluations. We also characterize the secrecy behavior of SSK by showing the effects of increasing the number of antennas at the transmitter as well as the number of antennas at the legitimate receiver and the eavesdropper. We further evaluate the secrecy rates achieved by SM with different sizes of the underlying signal constellation and compare the secrecy performance of this scheme with those of general MIMO and SIMO systems. The proposed framework unveils that SM is capable of achieving higher secrecy rates than the conventional single-antenna transmission schemes. However, it underperfoms compared to a general MIMO system in terms of the achievable secrecy rates.","PeriodicalId":162582,"journal":{"name":"2015 IEEE International Black Sea Conference on Communications and Networking (BlackSeaCom)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133759190","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
Improving energy efficiency of partial response signals by using coded modulation 采用编码调制提高部分响应信号的能量效率
2015 IEEE International Black Sea Conference on Communications and Networking (BlackSeaCom) Pub Date : 2015-05-18 DOI: 10.1109/BlackSeaCom.2015.7185086
A. Gorlov, A. Gelgor, Evgenii Popov
{"title":"Improving energy efficiency of partial response signals by using coded modulation","authors":"A. Gorlov, A. Gelgor, Evgenii Popov","doi":"10.1109/BlackSeaCom.2015.7185086","DOIUrl":"https://doi.org/10.1109/BlackSeaCom.2015.7185086","url":null,"abstract":"One of the most popular approaches to improving bandwidth efficiency is the use of signals with inter-symbol interference (ISI). In this paper bandwidth-efficient partial response signals (PRS) are analyzed in combinations with 4-QAM, 8-QAM and 16-QAM signal constellations and recursive systematic convolutional codes. We simulated transmission of encoded data through AWGN channel using the optimal PRS, each pulse shape gave maximal free Euclidean distance for chosen constellation and bandwidth. Also, we employed iterative receiver (or turbo equalizer) for detection and decoding of these signals. It is shown that the coded PRS exceed trellis-coded modulation and reach turbo trellis-coded modulation in bandwidth and energy characteristics.","PeriodicalId":162582,"journal":{"name":"2015 IEEE International Black Sea Conference on Communications and Networking (BlackSeaCom)","volume":"247 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124721905","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
Performance analysis of energy-detection-based massive SIMO 基于能量检测的大规模SIMO性能分析
2015 IEEE International Black Sea Conference on Communications and Networking (BlackSeaCom) Pub Date : 2015-03-31 DOI: 10.1109/BlackSeaCom.2015.7185105
M. Hammouda, Sami Akın, J. Peissig
{"title":"Performance analysis of energy-detection-based massive SIMO","authors":"M. Hammouda, Sami Akın, J. Peissig","doi":"10.1109/BlackSeaCom.2015.7185105","DOIUrl":"https://doi.org/10.1109/BlackSeaCom.2015.7185105","url":null,"abstract":"Recently, communications systems that are both energy efficient and reliable are under investigation. In this paper, we concentrate on an energy-detection-based transmission scheme where a communication scenario between a transmitter with one antenna and a receiver with significantly many antennas is considered. We assume that the receiver initially calculates the average energy across all antennas, and then decodes the transmitted data by exploiting the average energy level. Then, we calculate the average symbol error probability by means of a maximum a-posteriori probability detector at the receiver. Following that, we provide the optimal decision regions. Furthermore, we develop an iterative algorithm that reaches the optimal constellation diagram under a given average transmit power constraint. Through numerical analysis, we explore the system performance.","PeriodicalId":162582,"journal":{"name":"2015 IEEE International Black Sea Conference on Communications and Networking (BlackSeaCom)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116839922","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: 10
Design of LDPC code ensembles with fast convergence properties 具有快速收敛特性的LDPC码集设计
2015 IEEE International Black Sea Conference on Communications and Networking (BlackSeaCom) Pub Date : 2014-10-15 DOI: 10.1109/BlackSeaCom.2015.7185085
Ian P. Mulholland, E. Paolini, M. Flanagan
{"title":"Design of LDPC code ensembles with fast convergence properties","authors":"Ian P. Mulholland, E. Paolini, M. Flanagan","doi":"10.1109/BlackSeaCom.2015.7185085","DOIUrl":"https://doi.org/10.1109/BlackSeaCom.2015.7185085","url":null,"abstract":"The design of low-density parity-check (LDPC) code ensembles optimized for a finite number of decoder iterations is investigated. Our approach employs EXIT chart analysis and differential evolution to design such ensembles for the binary erasure channel and additive white Gaussian noise channel. The error rates of codes optimized for various numbers of decoder iterations are compared and it is seen that in the cases considered, the best performance for a given number of decoder iterations is achieved by codes which are optimized for this particular number. The design of generalized LDPC (GLDPC) codes is also considered, showing that these structures can offer better performance than LDPC codes for low-iteration-number designs. Finally, it is illustrated that LDPC codes which are optimized for a small number of iterations exhibit significant deviations in terms of degree distribution and weight enumerators with respect to LDPC codes returned by more conventional design tools.","PeriodicalId":162582,"journal":{"name":"2015 IEEE International Black Sea Conference on Communications and Networking (BlackSeaCom)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132889194","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
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