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2015 International Symposium on Wireless Communication Systems (ISWCS)最新文献

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Quasi-self-complementary antenna for multifunctional wireless applications 多功能无线应用的准自互补天线
2015 International Symposium on Wireless Communication Systems (ISWCS) Pub Date : 2015-08-01 DOI: 10.1109/ISWCS.2015.7454450
Chih-Yu Huang, Cheng‐Shong Hong, Jian-Ming Wu, Yu-Ming Yan, A. Yu, C. Lin
{"title":"Quasi-self-complementary antenna for multifunctional wireless applications","authors":"Chih-Yu Huang, Cheng‐Shong Hong, Jian-Ming Wu, Yu-Ming Yan, A. Yu, C. Lin","doi":"10.1109/ISWCS.2015.7454450","DOIUrl":"https://doi.org/10.1109/ISWCS.2015.7454450","url":null,"abstract":"In this paper, a quasi-self-complementary antenna (QSCA) for multifunctional (i.e., wideband and dual-band wireless local area network (WLAN)) applications is presented. The proposed antenna consists of a pie-shaped radiating patch fed by a 50-Ω microstrip line and its complementary metal structure connected to the ground plane. With properly adjusting the angle (θ) of the pie-shaped notch and the pie-shaped stub on the ground plane, an alternative function of the antenna can be achieved. For θ = 0°, the antenna has a wide -10 dB impedance bandwidth of 4848 MHz (about 102% centered at 4.77 GHz). For θ = 25°, the wideband QSCA can be transformed to a progressive dual-band antenna and thus provides two separate impedance bandwidth of 292 MHz (about 11.9% centered at 2.45 GHz) and 1548 MHz (about 28.1% centered at 5.5 GHz). The measured results of the proposed antenna also exhibit respectable radiating patterns and gain values.","PeriodicalId":383105,"journal":{"name":"2015 International Symposium on Wireless Communication Systems (ISWCS)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132959380","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
System-level throughput of NOMA with SIC in cellular downlink under FTP traffic model FTP流量模型下蜂窝下行链路中带有SIC的NOMA系统级吞吐量
2015 International Symposium on Wireless Communication Systems (ISWCS) Pub Date : 2015-08-01 DOI: 10.1109/ISWCS.2015.7454305
M. Kimura, K. Higuchi
{"title":"System-level throughput of NOMA with SIC in cellular downlink under FTP traffic model","authors":"M. Kimura, K. Higuchi","doi":"10.1109/ISWCS.2015.7454305","DOIUrl":"https://doi.org/10.1109/ISWCS.2015.7454305","url":null,"abstract":"In this paper, we investigate and compare the system-level throughput of non-orthogonal multiple access (NOMA) with a successive interference canceller (SIC) and orthogonal multiple access (OMA) in the downlink using a realistic file transfer protocol (FTP) traffic model. In the FTP traffic model, a user is assigned a finite payload to transmit when it arrives, and it leaves the system after the payload transmission is completed. This model is more realistic than the full-buffer traffic model, which is assumed in previous NOMA investigations. Furthermore, we evaluate the system-level throughput with various user scheduling criteria. Under the realistic finite-payload traffic model, a very high throughput gain in the vicinity of the cell using NOMA can be translated to improve the cell-edge user experience. Through extensive computer simulations, we clarify the behavior of NOMA with a SIC in the realistic traffic model in conjunction with various user scheduling criteria. The simulation results suggest that NOMA with a SIC is a promising multiple access scheme for systems beyond 4G.","PeriodicalId":383105,"journal":{"name":"2015 International Symposium on Wireless Communication Systems (ISWCS)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127863600","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
On the system level performance of cellular FBMC-based wideband PMR network 基于蜂窝fbmc的宽带PMR网络系统级性能研究
2015 International Symposium on Wireless Communication Systems (ISWCS) Pub Date : 2015-08-01 DOI: 10.1109/ISWCS.2015.7454399
D. Petrov, Budiarto Herman, T. Hämäläinen, S. Melnik
{"title":"On the system level performance of cellular FBMC-based wideband PMR network","authors":"D. Petrov, Budiarto Herman, T. Hämäläinen, S. Melnik","doi":"10.1109/ISWCS.2015.7454399","DOIUrl":"https://doi.org/10.1109/ISWCS.2015.7454399","url":null,"abstract":"New physical layer solutions are required for the next generation professional mobile radio (PMR) networks. Filter bank based multi-carrier (FBMC) technique is one of the promising candidates for beyond OFDM 5G wireless communication systems. This paper presents the simulation framework and models necessary for the study of the FBMC-based networks on the system level. PMR-specific 450 MHz frequency band is considered in the study. Special attention is devoted to the implementation of link-to-system interface model, which is sensitive to FBMC intrinsic interference. We demonstrate that even with simple one tap equalizer the performance of OFDM and FBMC systems are very close in the same baseline configuration. Moreover, implementation of advanced receivers together with more flexible and efficient spectrum utilization renders FBMC as the superior technology.","PeriodicalId":383105,"journal":{"name":"2015 International Symposium on Wireless Communication Systems (ISWCS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131694821","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
Techno-economic analysis of ultra-dense and DAS deployments in mobile 5G 移动5G中超密集和DAS部署的技术经济分析
2015 International Symposium on Wireless Communication Systems (ISWCS) Pub Date : 2015-08-01 DOI: 10.1109/ISWCS.2015.7454337
C. Bouras, V. Kokkinos, Anastasia Kollia, Andreas Papazois
{"title":"Techno-economic analysis of ultra-dense and DAS deployments in mobile 5G","authors":"C. Bouras, V. Kokkinos, Anastasia Kollia, Andreas Papazois","doi":"10.1109/ISWCS.2015.7454337","DOIUrl":"https://doi.org/10.1109/ISWCS.2015.7454337","url":null,"abstract":"Ultra-dense and Distributed Antenna Systems (DAS) technology consist fundamental means for achieving the data rates and round-trip times promised by future mobile networks, because they promise to assure excellent indoor coverage and offer the potential to meet the target key performance indicators at a lower cost. In this paper, we study the techno-economic aspects of ultra-dense and DAS deployments. Apart from the presentation of their architectures and advantages, we present a techno-economic modeling of these deployment types. The defined models are used for the investigation of the upper technologies from an economic perspective and therefore, they provide an insight in the future financial and price aspects of these technologies by consisting a useful tool for the definition of financing and pricing policies towards an economically viable ultra-dense femtocell-based or DAS deployment. Finally, it is confirmed that the Total Cost of Ownership (TCO) is lower for the femtocells compared to the DAS.","PeriodicalId":383105,"journal":{"name":"2015 International Symposium on Wireless Communication Systems (ISWCS)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126856054","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: 21
An approach for QoS-aware routing in mobile ad hoc networks 移动自组网中qos感知路由的一种方法
2015 International Symposium on Wireless Communication Systems (ISWCS) Pub Date : 2015-08-01 DOI: 10.1109/ISWCS.2015.7454423
A. Al-Ani, J. Seitz
{"title":"An approach for QoS-aware routing in mobile ad hoc networks","authors":"A. Al-Ani, J. Seitz","doi":"10.1109/ISWCS.2015.7454423","DOIUrl":"https://doi.org/10.1109/ISWCS.2015.7454423","url":null,"abstract":"Quality of service (QoS) routing in mobile ad hoc networks (MANETs) is a big challenge because of dynamically varying network topology and the limited availability of resources. Many techniques for solving the QoS routing problem in MANETs are available. Ant colony optimization is a promising solution that can be applied in wireless ad hoc networks. However, existing routing protocols that require additional control message exchange between neighbors to compute QoS parameters are too slow to react to fast topology change and increase network load and overhead. To decrease the overhead introduced to collect information from neighbor nodes and to obtain an accurate estimate of QoS parameters, we use the Simple Network Management Protocol (SNMP) to obtain these values locally. Artificial ants evaluate these values to find the paths that satisfy application QoS requirements. The simulation results implemented using the ns-3 network simulator show that QoS routing based on ant colony optimization (QoRA) is scalable and performs well.","PeriodicalId":383105,"journal":{"name":"2015 International Symposium on Wireless Communication Systems (ISWCS)","volume":"PP 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126357809","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
Deterministic Cramér-Rao bound for a mixture of circular and strictly non-circular signals 圆形和严格非圆形信号混合的确定性cram<s:1> - rao界
2015 International Symposium on Wireless Communication Systems (ISWCS) Pub Date : 2015-08-01 DOI: 10.1109/ISWCS.2015.7454431
Jens Steinwandt, F. Roemer, M. Haardt
{"title":"Deterministic Cramér-Rao bound for a mixture of circular and strictly non-circular signals","authors":"Jens Steinwandt, F. Roemer, M. Haardt","doi":"10.1109/ISWCS.2015.7454431","DOIUrl":"https://doi.org/10.1109/ISWCS.2015.7454431","url":null,"abstract":"The problem of estimating the signal parameters of a mixture of circular and strictly second-order (SO) non-circular (NC) signals impinging on an antenna array has recently attracted considerable attention. Several high-resolution algorithms have been proposed for this scenario that improve the estimation accuracy of the traditional schemes and simultaneously increase the number of resolvable signals. In this paper, we derive a closed-form expression of the deterministic Cramér-Rao bound (CRB), termed deterministic C-NC CRB, as a benchmark for this new class of algorithms. The obtained result allows to assess the maximum achievable performance gain in this scenario. The derivation is based on the Slepian-Bangs formula, which is still applicable due to the deterministic data assumption. Simulation results show that the C-NC CRB decreases when the number of strictly non-circular signals increases within a fixed number of sources. In this case, also the individual bounds of the circular signals decrease, which suggests that the presence of strictly non-circular sources reduces the estimation error of the circular signals.","PeriodicalId":383105,"journal":{"name":"2015 International Symposium on Wireless Communication Systems (ISWCS)","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126314729","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
Real-time detection of rectilinear sources for wireless communication signals 实时检测直线源无线通信信号
2015 International Symposium on Wireless Communication Systems (ISWCS) Pub Date : 2015-08-01 DOI: 10.1109/ISWCS.2015.7454403
S. Kanna, Min Xiang, D. Mandic
{"title":"Real-time detection of rectilinear sources for wireless communication signals","authors":"S. Kanna, Min Xiang, D. Mandic","doi":"10.1109/ISWCS.2015.7454403","DOIUrl":"https://doi.org/10.1109/ISWCS.2015.7454403","url":null,"abstract":"This paper proposes a real-time detector of rectilinearity of signals received by an antenna array. A rectilinear source is characterised by having a circularity coefficient of unity and it represents a real-valued source with an arbitrary phase shift. Real-time detection of rectilinearity has been introduced as a new challenge in communications since identifying the rectilinearity of the sources would help designers choose between strictly linear and widely linear beamformers. The proposed real-time detector of rectilinearity, first separates the sources with an online blind source separation (BSS) algorithm, then estimates the circularity coefficient of the separated sources using a real-time circularity tracker. We exploit the result that the variance of the circularity tracker is null for rectilinear signals to tune the algorithm for rapid convergence and robust detection. Simulations on synthetic communication data support the analysis and claims.","PeriodicalId":383105,"journal":{"name":"2015 International Symposium on Wireless Communication Systems (ISWCS)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122204770","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
Preamble-based channel estimation in asynchronous FBMC-OQAM distributed MIMO systems 异步FBMC-OQAM分布式MIMO系统中基于前导的信道估计
2015 International Symposium on Wireless Communication Systems (ISWCS) Pub Date : 2015-08-01 DOI: 10.1109/ISWCS.2015.7454409
François Rottenberg, Y. Medjahdi, Eleftherios Kofidis, J. Louveaux
{"title":"Preamble-based channel estimation in asynchronous FBMC-OQAM distributed MIMO systems","authors":"François Rottenberg, Y. Medjahdi, Eleftherios Kofidis, J. Louveaux","doi":"10.1109/ISWCS.2015.7454409","DOIUrl":"https://doi.org/10.1109/ISWCS.2015.7454409","url":null,"abstract":"This paper investigates downlink channel estimation in a distributed MIMO context employing Filter Bank-based Multi-Carrier Offset QAM (FBMC-OQAM) modulation. Training preambles are constructed based on two different subcarriers assignment schemes (SAS), with the aim of freeing the estimation procedure from the effects of the multi-stream interference (MSI). The Linear Minimum Mean Squared Error (LMMSE) estimator is considered for computing estimates of the channel frequency responses over the entire frequency band and shown to be robust to ill-conditioning associated with the SAS. The application of the different SAS to FBMC-OQAM is evaluated via simulations in an unsynchronized scenario. The performances are compared with the corresponding fully synchronized CP-OFDM scenario. The results demonstrate the robustness of FBMC-OQAM to asynchronism and reveal the advantages of each SAS in various situations.","PeriodicalId":383105,"journal":{"name":"2015 International Symposium on Wireless Communication Systems (ISWCS)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122226107","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: 14
Block sequential decoding of polar codes 极性码的块顺序解码
2015 International Symposium on Wireless Communication Systems (ISWCS) Pub Date : 2015-08-01 DOI: 10.1109/ISWCS.2015.7454356
Grigorii Trofimiuk, P. Trifonov
{"title":"Block sequential decoding of polar codes","authors":"Grigorii Trofimiuk, P. Trifonov","doi":"10.1109/ISWCS.2015.7454356","DOIUrl":"https://doi.org/10.1109/ISWCS.2015.7454356","url":null,"abstract":"The problem of efficient decoding of polar codes is considered. A modification of the sequential decoding algorithm is proposed. Instead of processing one symbol at each iteration, we perform ML decoding of blocks of symbols using the tree-trellis list Viterbi algorithm. Numeric results show that the proposed approach significantly reduces the average complexity and latency of the sequential decoder without any performance degradation.","PeriodicalId":383105,"journal":{"name":"2015 International Symposium on Wireless Communication Systems (ISWCS)","volume":"214 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122438619","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
Pilot based single user frequency offset estimation in spectrally-overlapping FDMA CPM systems 频谱重叠FDMA CPM系统中基于导频的单用户频偏估计
2015 International Symposium on Wireless Communication Systems (ISWCS) Pub Date : 2015-08-01 DOI: 10.1109/ISWCS.2015.7454340
N. Noels, M. Moeneclaey
{"title":"Pilot based single user frequency offset estimation in spectrally-overlapping FDMA CPM systems","authors":"N. Noels, M. Moeneclaey","doi":"10.1109/ISWCS.2015.7454340","DOIUrl":"https://doi.org/10.1109/ISWCS.2015.7454340","url":null,"abstract":"The spectral efficiency of a frequency division multiple access system can be increased by allowing some spectral overlap of adjacent user signals, at the expense of higher interuser interference. We derive the linearized mean square error of pilot based single user maximum likelihood frequency offset estimation in such a system, assuming continuous phase modulation. We consider synchronous as well as asynchronous reception of the pilot signals from the various users. Moreover, the pilot signals are assumed to be either constant and equal to 1, or pseudo-random and independent for all users. In spite of the presence of interuser interference, we obtain relatively simple closed-form expressions, from which the effect of the modulation parameters, the pilot signal structure and the number of users is easily derived.","PeriodicalId":383105,"journal":{"name":"2015 International Symposium on Wireless Communication Systems (ISWCS)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132919530","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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