{"title":"Bayesian compressive spectrum sensing joint DOA estimation and polarization signal processing","authors":"Xuekang Sun, R. Zhou, Kun Su, Li Gao, Muyan Ma","doi":"10.1109/WPMC.2017.8301879","DOIUrl":"https://doi.org/10.1109/WPMC.2017.8301879","url":null,"abstract":"In this paper, we proposed a Bayesian compressive spectrum sensing (BCSS) joint direction of arrival (DOA) estimation and polarization signal processing with adaptive threshold (ADD-BCS) in a dual polarization antenna (DPA) receiving system. In this scheme, we first use Bayesian sampling matrix to achieve the compressive sensing data in two branches of a dual polarization antenna separately, before a proposed fusion model which aims to decrease the amount of complex computation is used. Then, DOA estimation and adaptive threshold are introduced to increase the accuracy and efficiency of wideband spectrum sensing. The simulation results show that this method is more accurate and faster in compressing and recovering signals.","PeriodicalId":239243,"journal":{"name":"2017 20th International Symposium on Wireless Personal Multimedia Communications (WPMC)","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124500112","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}
{"title":"Spatio-temporal stochastic modeling of heterogeneous cellular networks: Security and delay analysis","authors":"B. Wang, Kaizhi Huang","doi":"10.1109/WPMC.2017.8301841","DOIUrl":"https://doi.org/10.1109/WPMC.2017.8301841","url":null,"abstract":"Security and delay are both of extremely important due to the fact that the fifth generation (5G) wireless networks aims to achieve high level of security and low delay. In this paper, considering the randomness of base stations in space and dynamic user traffic arrivals in time, we first develop a novel traffic-aware spatio-temporal mathematical framework in an open access A\"-tier heterogeneous cellular network (HCN) based on stochastic geometry theory and queuing theory. On the basis of the spatio-temporal framework, we then investigate the security and delay performance. It is demonstrated that there is a tradeoff between packet transmission delay and secrecy transmission rate, which is caused by the packet arrival probability. Finally, simulation experiments are conducted to validate the correctness and usefulness of our theoretical conclusions.","PeriodicalId":239243,"journal":{"name":"2017 20th International Symposium on Wireless Personal Multimedia Communications (WPMC)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125987305","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}
{"title":"A deep learning based handover mechanism for UAV networks","authors":"Hanzhang Yang, Bo Hu, Lei Wang","doi":"10.1109/WPMC.2017.8301842","DOIUrl":"https://doi.org/10.1109/WPMC.2017.8301842","url":null,"abstract":"The attractive feature of conveniently deployed as an aerial access point (AP) to provide coverage and improve network performance, has made the Unmanned Aerial Vehicle (UAV) networks a research hotspot. In this paper, an UAV handover mechanism in the three-dimensional space is proposed. We build and train user trajectory prediction model based on neural network. Then we described the handover mechanism under the condition of predicted trajectory and the constructed signal transmission model in UAV networks. Simulation results show that compared to the traditional handover algorithm, our scheme nearly 10% higher in handover success rate.","PeriodicalId":239243,"journal":{"name":"2017 20th International Symposium on Wireless Personal Multimedia Communications (WPMC)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124764111","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}
Hiroaki Sudo, K. Kosaka, H. Kanemoto, N. Gejoh, Takeshi Yasunaga, M. Uesugi
{"title":"Study of spectrum sensing scheme using received power within preamble signals","authors":"Hiroaki Sudo, K. Kosaka, H. Kanemoto, N. Gejoh, Takeshi Yasunaga, M. Uesugi","doi":"10.1109/WPMC.2017.8301881","DOIUrl":"https://doi.org/10.1109/WPMC.2017.8301881","url":null,"abstract":"Time Division Duplex (TDD)-based bidirectional digital field pick-up unit (FPU) system is now being studied. This new digital FPU system shares its frequency band with other wireless systems. Therefore, digital FPU system should detect and avoid the interference from other systems of which the signal format is unknown. To FPU system, it is impossible to apply conventional spectrum sensing schemes which detect known signals such as preamble in other systems. We studied the spectrum sensing scheme using the received power within preamble signals of FPU system. From the results of the baseband link-level computer simulation, it was confirmed that the proposed scheme achieved an excellent performance of the interference detection (the interference false detection rate both with and without the presence of the interference).","PeriodicalId":239243,"journal":{"name":"2017 20th International Symposium on Wireless Personal Multimedia Communications (WPMC)","volume":"24 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128572359","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}
{"title":"Wifi channel selection based on load criteria","authors":"Danielle Saliba, Rodrigue Imad, S. Houcke","doi":"10.1109/WPMC.2017.8301833","DOIUrl":"https://doi.org/10.1109/WPMC.2017.8301833","url":null,"abstract":"With the increasing demand for wireless communication systems, while Heterogeneous Networks (Het-Nets) are under study toward 5G technology in mobile communication systems, WiFi Access Points (APs) are considered a potential layer within those multiple Radio Access Technologies (RATs). Significant network capacity gain can be achieved not only through aggressive reuse of spectrum across the multiple tiers in the network, but also by integrating WiFi in the mobile network through additional spectrum in un-licensed bands. Different criteria should be investigated in order to allow both the WiFi APs and the end user to operate on the best suitable channel, where the basic one of those criteria is the \"load\" of the operating channels. We propose in this paper an accurate algorithm for the estimation of WiFi 802.11n physical channels load through 3 channels observations only. Once the channel load is estimated using the proposed algorithm, the channel assignment based on the minimal load value is acquired, thus providing faster response of an AP channel selection and faster end user connection for better Quality of Experience (QoE).","PeriodicalId":239243,"journal":{"name":"2017 20th International Symposium on Wireless Personal Multimedia Communications (WPMC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130572211","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}
{"title":"A comprehensive study of universal time-domain windowed OFDM-based LTE downlink system","authors":"K. Mizutani, T. Matsumura, H. Harada","doi":"10.1109/WPMC.2017.8301823","DOIUrl":"https://doi.org/10.1109/WPMC.2017.8301823","url":null,"abstract":"For the 5G system and beyond, several new-waveforms with low out-of-band emission (OOBE) have been proposed to improve spectral efficiency. The universal timedomain windowed OFDM (UTW-OFDM) have been proposed as a waveform that has the low OOBE characteristics and high compatibility with the conventional cyclic prefix OFDM (CP-OFDM)-based systems. To indicate the feasibility of the UTW-OFDM-based system in the 5G and beyond, the comprehensive evaluation of the UTW-OFDM-based LTE system is important, however, the evaluation of the UTW-OFDM-based LTE system complexity has been not reported. Furthermore, the communication quality of the UTW-OFDM-based LTE system was evaluated by using BER characteristics on the short delay multipath propagation channel in the previous studies. In this paper, to show the feasibility of the UTW-OFDM for the 5G and beyond, the complexity of the UTW-OFDM-based LTE downlink (DL) system is evaluated and compared with one of the LTE-DL system with the conventional CP-OFDM and the filtering-based waveform (UF-OFDM). The complexity of the conventional CP-OFDM-based system and the UTW-OFDM-based system is about 0.45 % of the complexity of the UF-OFDM-based system. Furthermore, the communication quality of the UTW-OFDM-based LTE-DL system is evaluated by using BLER on the 3GPP Extended Typical Urban (ETU) channel model with the 70 Hz Doppler shift. The UTW-OFDM-based LTE-DL system can improve the OOBE of the conventional CP-OFDM-based LTE-DL system by 45 dB with only 2.0 dB deterioration of EN0 to achieve BLER = 10−1 even if the 64QAM is applied with a half coding rate.","PeriodicalId":239243,"journal":{"name":"2017 20th International Symposium on Wireless Personal Multimedia Communications (WPMC)","volume":"256 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121345543","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}
{"title":"A full-duplex SWIPT relaying protocol based on discrete energy state","authors":"Zhiqiao Nie, Rui Zhao, Yuanjian Li, Xing Tan","doi":"10.1109/WPMC.2017.8301864","DOIUrl":"https://doi.org/10.1109/WPMC.2017.8301864","url":null,"abstract":"In this paper, a new transmission protocol is proposed to improve the performance of the power-splitting energy harvesting relaying system. Since the decode-and-forward relay operates in the full-duplex mode, the relay energy state exhibits a complex charge-discharge behavior. Based on the discretization of the relay battery energy, the transfer probability of the relay energy state is analyzed by using the Markov chain, and the initial distribution of the relay energy state is presented. We further derive the closed-form expression of the outage probability. The numerical results verify the accuracy of the derived closed-form expression and reveal the influence of the power allocation factor and the relay transmit power on the system performance.","PeriodicalId":239243,"journal":{"name":"2017 20th International Symposium on Wireless Personal Multimedia Communications (WPMC)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121695794","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}
{"title":"Reduced complexity decoder for FDD MIMO beamforming systems with large antenna arrays","authors":"G. Villardi, K. Ishizu, F. Kojima","doi":"10.1109/WPMC.2017.8301825","DOIUrl":"https://doi.org/10.1109/WPMC.2017.8301825","url":null,"abstract":"It is of great interest to develop larger scale multiple-input-multiple-output (MIMO) technology based on frequency division duplexing (FDD) for backward compatibility with existing standards and already deployed cellular networks. One hindrance to the FDD approach is the codeword search complexity performed by the decoder, which is known to scale with the number of transmit antennas Nt in a system. The codeword search complexity does not scale linearly and soon becomes infeasible even for the moderately large MIMO systems expected in the very near future. We address this problem by proposing a ‘natural sequence based orthogonal codebook’ and an ‘intra-array interference magnitude’ (IIM) framework for decoding in MIMO based on quantized equal gain transmission (QEGT) that altogether tremendously simplifies the codeword search problem despite suffering from only a small sacrifice in performance.","PeriodicalId":239243,"journal":{"name":"2017 20th International Symposium on Wireless Personal Multimedia Communications (WPMC)","volume":"87 7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127997850","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}
{"title":"Cyclostationary spectrum sensing based channel estimation using complex exponential basis expansion model in cognitive vehicular networks","authors":"Xia Liu, Zhimin Zeng, Caili Guo","doi":"10.1109/WPMC.2017.8301802","DOIUrl":"https://doi.org/10.1109/WPMC.2017.8301802","url":null,"abstract":"Cyclostationarity sensing methods are appealing for spectrum sensing due to its strong robustness to noise uncertainty. However, in cognitive vehicular networks, the Doppler frequency shift induced by high mobility cognitive vehicle will bring the cyclic frequency offset (CFO) for cyclostationarity spectrum sensing. The CFO can cause significant detection performance degradation because of a difference between cyclic frequency aware of the cognitive vehicle and the actual cyclic frequency of primary signal. To address this issue, cyclostationary spectrum sensing based on channel estimation using complex exponential basis expansion model (CE-BEM) is established in this paper. We firstly establish a Doppler frequency shift estimation method based on in-vehicle information. Then an appropriate CE-BEM is given according to the value of Doppler frequency shift estimation. The cyclostationarity spectrum sensing based on CE-BEM model for single user and cooperative users are provided. Theoretical analysis show that new cyclostationary characteristics are produced on account of the cyclostationarity induced by the CE-BEM. Simulation results demonstrate that both the local cyclostationarity spectrum sensing (LCSS) and the cooperative cyclostationarity spectrum sensing (CCSS) provide substantial improvement on detection performance in the dynamic moving speed environment for cognitive vehicles.","PeriodicalId":239243,"journal":{"name":"2017 20th International Symposium on Wireless Personal Multimedia Communications (WPMC)","volume":"43 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114010731","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}
Takumi Kobayashi, Satoshi Seimiya, Kouhei Harada, Masaki Noi, Zane Barker, G. Woodward, A. Willig, R. Kohno
{"title":"Wireless technologies to assist search and localization of victims of wide-scale natural disasters by unmanned aerial vehicles","authors":"Takumi Kobayashi, Satoshi Seimiya, Kouhei Harada, Masaki Noi, Zane Barker, G. Woodward, A. Willig, R. Kohno","doi":"10.1109/WPMC.2017.8301846","DOIUrl":"https://doi.org/10.1109/WPMC.2017.8301846","url":null,"abstract":"When natural disasters are occurred, a lot of injured victims should be found and have medical treatment as soon as possible. However, looking for the victims is not easy due to destroyed infrastructures. In order to solve the problems, authors have been proposed several solutions by using multiple unmanned aerial vehicles (UAVs) and dependable wireless communication technology. As a dependable wireless communication, ultra-wide band (UWB) radio which is known as a physical layer (PHY) of wireless body area network (WBAN) is used in this research. UWB radio can realize an accurate localization system which can be used indoor based on high resolution time difference detection of arrival time. Our proposal consists of several steps. At first, geo-location of multiple UAVs are estimated by global navigation satellite system (GNSS) such as global positioning system (GPS). Secondly, one of the multiple drones moves towards to destination in order to expand position estimation coverage area. When a victim who has UWB device is found, anchor nodes on multiple UAVs estimate the position of the victim. In addition, UWB sensor node which is owned by the victim can get vital-sign of the victim and transmit that with position information to rescue team via UAVs. This paper provides the latest results of theoretical analysis and experiments that performed by using actual UAVs and UWB localization system.","PeriodicalId":239243,"journal":{"name":"2017 20th International Symposium on Wireless Personal Multimedia Communications (WPMC)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115207621","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}