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2019 IEEE 30th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)最新文献

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Opportunistic Scheduling in Network-Coded Cooperative Systems 网络编码协作系统中的机会调度
2019 IEEE 30th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC) Pub Date : 2019-09-01 DOI: 10.1109/PIMRC.2019.8904167
A. Heidarpour, M. Ardakani, C. Tellambura
{"title":"Opportunistic Scheduling in Network-Coded Cooperative Systems","authors":"A. Heidarpour, M. Ardakani, C. Tellambura","doi":"10.1109/PIMRC.2019.8904167","DOIUrl":"https://doi.org/10.1109/PIMRC.2019.8904167","url":null,"abstract":"In this paper, we study the performance of opportunistic source selection (OSS) in multisource multirelay network-coded cooperative (NCC) systems. For this system, we derive the exact outage probability and asymptotic measures such as the diversity and coding gains. The derived analytical results provide an efficient means to evaluate the impact of different system parameters on the system performance. Our results reveal that the proposed NCC system greatly exploits the diversity gains in multisource multirelay NCC systems and thus provides a considerable performance improvement. From the derived closed-form diversity gains, we also evaluate the optimal number of selected relays that maximizes the achievable diversity gain. Numerical results are also presented to validate the theoretical analysis.","PeriodicalId":412182,"journal":{"name":"2019 IEEE 30th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121906174","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
DOA Tracking Algorithm for the Time-varying Number of Signal Sources 时变信号源数的DOA跟踪算法
2019 IEEE 30th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC) Pub Date : 2019-09-01 DOI: 10.1109/PIMRC.2019.8904306
Yulong Gao, Yanping Chen, Huan Wang, Shaochuan Wu
{"title":"DOA Tracking Algorithm for the Time-varying Number of Signal Sources","authors":"Yulong Gao, Yanping Chen, Huan Wang, Shaochuan Wu","doi":"10.1109/PIMRC.2019.8904306","DOIUrl":"https://doi.org/10.1109/PIMRC.2019.8904306","url":null,"abstract":"At present, sparse Bayesian learning (SBL) is introduced into direction of arrival (DOA) estimation for both coherent and incoherent signals. Instead of directly extending DOA estimation to DOA tracking, we construct an array data model including DOA change of adjacent time to decrease computational complexity and avoid grid effect. Thus, we regard DOA tracking as a parameter estimation problem in terms of Taylor expansion and Bayesian rule. Owing to the existence of hidden variables, we adopt the Expectation Maximization (EM) algorithm to calculate the DOA change. More importantly, we realize DOA tracking by utilizing the estimated signal power and noise power when the number of signal sources varies with time. The proposed method is numerically evaluated with an assumption of uniform linear array. The results show that the proposed algorithm has higher tracking accuracy over conventional methods.","PeriodicalId":412182,"journal":{"name":"2019 IEEE 30th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115797138","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
Angle-Domain NOMA over Multicell Massive MIMO Systems 多单元大规模MIMO系统的角度域NOMA
2019 IEEE 30th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC) Pub Date : 2019-09-01 DOI: 10.1109/PIMRC.2019.8904147
Weidong Shao, Shun Zhang, Hongyan Li, Jianpeng Ma
{"title":"Angle-Domain NOMA over Multicell Massive MIMO Systems","authors":"Weidong Shao, Shun Zhang, Hongyan Li, Jianpeng Ma","doi":"10.1109/PIMRC.2019.8904147","DOIUrl":"https://doi.org/10.1109/PIMRC.2019.8904147","url":null,"abstract":"In this paper, we propose an angle-domain NOMA transmission scheme over multicell massive MIMO systems, where multiple users’ signal can be superposed to be served by the same spatially angle-domain beams. Then, we carefully consider the performance degradation resulting from the severe inter-cell interference, and formulate an optimization problem in terms of jointly optimizing precoders and decoders (JOPD) to seek an optimal transmission policy with quality of service (QoS) requirements of both cell-edge users and cell-center users, which consequently is a maximization of a nonconvex function with nonconvex constraints. To solve this challenging problem, we invoke the constrained concave convex procedure (CCCP) method to optimize precoders with fixed decoders, while the decoders can be readily optimized with obtained precoders. Consequently, we propose an alternating optimization algorithm based on CCCP (AoCCCP) to jointly optimize precoders and decoders and then obtain a suboptimal solution of the prime problem. Simulation results verify that the proposed scheme exhibits significant performance gain in terms of sum rate as well as QoS guarantee.","PeriodicalId":412182,"journal":{"name":"2019 IEEE 30th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)","volume":"8 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122335628","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
Coded LoRa Performance in Wireless Channels 无线信道中的编码LoRa性能
2019 IEEE 30th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC) Pub Date : 2019-09-01 DOI: 10.1109/PIMRC.2019.8904298
G. Baruffa, L. Rugini, Vanni Mecarelli, Lorenzo Germani, F. Frescura
{"title":"Coded LoRa Performance in Wireless Channels","authors":"G. Baruffa, L. Rugini, Vanni Mecarelli, Lorenzo Germani, F. Frescura","doi":"10.1109/PIMRC.2019.8904298","DOIUrl":"https://doi.org/10.1109/PIMRC.2019.8904298","url":null,"abstract":"This paper focuses on the performance of LoRa systems after channel decoding. First, we introduce a matrix model for the coded transmission and reception of LoRa signals. Second, we theoretically evaluate the probability of bit error of coherently and noncoherently detected LoRa signals, in additive white Gaussian noise (AWGN), also assuming hard decoding of the LoRa physical layer Hamming code. Simulation results confirm the correctness of the theoretical expressions. Third, we analyze by simulation the coded performance of LoRa systems, with both hard and soft decoding, assuming a multipath channel model already used in the literature. Our analysis quantifies the performance gain of channel coding with respect to uncoded transmissions, in both AWGN and multipath channels, under the assumption that the coded system uses the same bandwidth with lower bit rate.","PeriodicalId":412182,"journal":{"name":"2019 IEEE 30th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126633923","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
Faster-Than-Nyquist Signaling with Constraints on Pulse Shapes 脉冲形状约束下的超奈奎斯特信号
2019 IEEE 30th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC) Pub Date : 2019-09-01 DOI: 10.1109/PIMRC.2019.8904284
Akansh Jain, P. SathwikChadaga, N. Seshadri, R. D. Koilpillai
{"title":"Faster-Than-Nyquist Signaling with Constraints on Pulse Shapes","authors":"Akansh Jain, P. SathwikChadaga, N. Seshadri, R. D. Koilpillai","doi":"10.1109/PIMRC.2019.8904284","DOIUrl":"https://doi.org/10.1109/PIMRC.2019.8904284","url":null,"abstract":"Faster-Than-Nyquist (FTN) Signaling is a non-orthogonal transmission scheme which violates the Nyquist zero-ISI criterion providing higher throughput and better spectral efficiency than a Nyquist transmission scheme. This comes with a cost of higher transceiver complexity. In this paper, we focus on understanding pulse shapes and their inter-symbol-interference (ISI) and show that, under certain conditions on pulse shapes and τ (time acceleration factor), the ISI can be avoided completely with the help of precoding. This leads to a symbol-by-symbol detection. Further, we extend this idea to Orthogonal Frequency Division Multiplexing (OFDM) FTN systems and show that, under certain conditions, the average performance of OFDM system reaches that of a Nyquist system. Finally, simulation results of the performance of precoded and non-precoded single carrier and OFDM FTN systems are compared to a Nyquist system.","PeriodicalId":412182,"journal":{"name":"2019 IEEE 30th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127109243","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
Performance Evaluation of Single Base Station ToA-AoA Localization in an LTE Testbed LTE试验台单基站ToA-AoA定位性能评价
2019 IEEE 30th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC) Pub Date : 2019-09-01 DOI: 10.1109/PIMRC.2019.8904454
Alejandro Blanco Pizarro, Norbert Ludant, Pablo Jiménez Mateo, Zhenyu Shi, Yi Wang, J. Widmer
{"title":"Performance Evaluation of Single Base Station ToA-AoA Localization in an LTE Testbed","authors":"Alejandro Blanco Pizarro, Norbert Ludant, Pablo Jiménez Mateo, Zhenyu Shi, Yi Wang, J. Widmer","doi":"10.1109/PIMRC.2019.8904454","DOIUrl":"https://doi.org/10.1109/PIMRC.2019.8904454","url":null,"abstract":"Precise localization is becoming an integral part of mobile network architectures, not only to provide location-based services but also to optimize the operation of the network itself through suitable context information. Location systems are of particular importance for indoor settings where GPS may be unavailable. While upcoming 5G systems will provide improved location accuracy, for a long time to come many areas will only have LTE coverage, and ubiquitous localization will thus also have to rely on LTE technology. To evaluate the location accuracy that can be achieved with current mobile systems, we implement a localization algorithm in a standard-compliant LTE testbed based on software-defined radios. We assess the localization accuracy in representative indoor scenarios. Despite a bandwidth of only 20MHz, the results show a good median error around 2m, but significantly larger errors may occur in non-line-of-sight cases. Nevertheless, the accuracy is sufficient for a range of potential applications.","PeriodicalId":412182,"journal":{"name":"2019 IEEE 30th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)","volume":"34 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116667059","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
User Throughput Enhancement with Dynamic Full-Duplex Cellular System in Dense Urban Multi-cell Environment 密集城市多小区环境下动态全双工小区系统的用户吞吐量增强
2019 IEEE 30th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC) Pub Date : 2019-09-01 DOI: 10.1109/PIMRC.2019.8904172
Kazuki Nishikori, Kyoya Teramae, K. Mizutani, T. Matsumura, H. Harada
{"title":"User Throughput Enhancement with Dynamic Full-Duplex Cellular System in Dense Urban Multi-cell Environment","authors":"Kazuki Nishikori, Kyoya Teramae, K. Mizutani, T. Matsumura, H. Harada","doi":"10.1109/PIMRC.2019.8904172","DOIUrl":"https://doi.org/10.1109/PIMRC.2019.8904172","url":null,"abstract":"IBFD (In-Band Full-Duplex) has attracted renewed attentions in recent years along with the improvement of self-interference cancellation technologies because IBFD can ideally double the system capacity. Although there have been various reports applying IBFD to the cellular system, some impair the compatibility with the conventional LTE (Long-Term Evolution) system and some are not evaluated in practical scenario such as a multi-cell environment. In this paper, we propose an advanced DDC (Dynamic-Duplex Cellular) system applying IBFD to all cells in a multi-cell environment. The proposed system suppresses inter-cell interferences among all cells and enhances the system capacity with proper scheduling and power control without information exchange among neighboring cells while maintaining compatibility with the conventional TD (Time division Duplex)-LTE system. Practicality of the proposed DDC system is also evaluated by computer simulation with regard to the enhancement of the user throughput.","PeriodicalId":412182,"journal":{"name":"2019 IEEE 30th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116922877","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
Location-Aware Sleep Strategy for Energy-Delay Tradeoffs in 5G with Reinforcement Learning 基于强化学习的5G能量延迟权衡的位置感知睡眠策略
2019 IEEE 30th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC) Pub Date : 2019-09-01 DOI: 10.1109/PIMRC.2019.8904155
A. El-Amine, Hussein Al Haj Hassan, Mauricio Iturralde, L. Nuaymi
{"title":"Location-Aware Sleep Strategy for Energy-Delay Tradeoffs in 5G with Reinforcement Learning","authors":"A. El-Amine, Hussein Al Haj Hassan, Mauricio Iturralde, L. Nuaymi","doi":"10.1109/PIMRC.2019.8904155","DOIUrl":"https://doi.org/10.1109/PIMRC.2019.8904155","url":null,"abstract":"In this paper, we propose a sleep strategy for energy-efficient 5G Base Stations (BSs) with multiple Sleep Mode (SM) levels to bring down energy consumption. Such management of energy savings is coupled with managing the Quality of Service (QoS) resulting from waking up sleeping BSs. As a result, a tradeoff exists between energy savings and delay. Unlike prior work that studies this problem for binary state BS (ON and OFF), this work focuses on multi-level SM environment, where the BS can switch to several SM levels. We propose a Q-Learning algorithm that controls the state of the BS depending on the geographical location and moving velocity of neighboring users in order to learn the best policy that maximizes the tradeoff between energy savings and delay. We evaluate the performance of our proposed algorithm with an online suboptimal algorithm that we introduce as well. Results show that the Q-Learning algorithm performs better with energy savings up to 92% as well as better delay performance than the heuristic scheme.","PeriodicalId":412182,"journal":{"name":"2019 IEEE 30th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131182617","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: 18
Estimation and Reservation for Autonomous Resource Selection in C-V2X Mode 4 C-V2X模式下自主资源选择的估计与预留
2019 IEEE 30th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC) Pub Date : 2019-09-01 DOI: 10.1109/PIMRC.2019.8904095
Saif Sabeeh, P. Sroka, K. Wesołowski
{"title":"Estimation and Reservation for Autonomous Resource Selection in C-V2X Mode 4","authors":"Saif Sabeeh, P. Sroka, K. Wesołowski","doi":"10.1109/PIMRC.2019.8904095","DOIUrl":"https://doi.org/10.1109/PIMRC.2019.8904095","url":null,"abstract":"In this paper, the decentralized resource selection for Cellular Vehicle to Everything (C-V2X) communication is investigated. The immunity against packet collisions and selection of resource allocation are examined. It is found that the improvement of collision ratio and packet reception ratio (PRR) with the estimation and reservation of resource allocation, is the best way to improve the message broadcasting reliability. However, Sensing-based Semi-Persistent Scheduling (S-SPS), has been proposed for C-V2X Mode 4. The S-SPS faces several serious problems, like half duplex errors, hidden terminal errors, and packet collision errors. We propose an algorithm to enhance the performance aimed at decreasing the collision ratio and increasing PRR. The idea is that each vehicle lists all resource locations of the received packets that have the same random counter. This allows each terminal to estimate which resource location will be free in the next resource selection. Also, the announced next location in the list will be the current location when the random counter reaches zero. This way the vehicle does not need to depend on the sensing process, and resources utilization is improved. Our simulations show a significant improvement in the performance of our proposed algorithm as compared to S-SPS.","PeriodicalId":412182,"journal":{"name":"2019 IEEE 30th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132511252","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
A Framework for Load Balanced UE Association in Dense LTE Networks 密集LTE网络中负载均衡UE关联框架
2019 IEEE 30th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC) Pub Date : 2019-09-01 DOI: 10.1109/PIMRC.2019.8904238
Soumadip Biswas, Arobinda Gupta, Sandip Chakraborty
{"title":"A Framework for Load Balanced UE Association in Dense LTE Networks","authors":"Soumadip Biswas, Arobinda Gupta, Sandip Chakraborty","doi":"10.1109/PIMRC.2019.8904238","DOIUrl":"https://doi.org/10.1109/PIMRC.2019.8904238","url":null,"abstract":"Most existing UE association techniques consider signal strength from eNBs as the primary metric for handover decisions. This may result in unbalanced distribution of UEs to eNBs in a dense LTE network with large number of users, even though a UE may have multiple good eNB options for association. In this paper we propose a load balancing framework that can be applied over any existing handover algorithm periodically to balance eNB loads. The framework uses a novel metric based on eNB-availability-option of UEs for choosing the set of UEs to handover to balance load and their target eNBs, while ensuring good signal quality. A specific algorithm based on the framework is proposed and evaluated by simulating on NS-3 over five existing handover algorithms.","PeriodicalId":412182,"journal":{"name":"2019 IEEE 30th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131931292","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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