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

On Fairness Optimization for NOMA-Enabled Multi-Beam Satellite Systems 基于noma的多波束卫星系统公平性优化研究

2019 IEEE 30th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC) Pub Date : 2019-09-01 DOI: 10.1109/PIMRC.2019.8904429

Anyue Wang, Lei Lei, E. Lagunas, A. Pérez-Neira, S. Chatzinotas, B. Ottersten

{"title":"On Fairness Optimization for NOMA-Enabled Multi-Beam Satellite Systems","authors":"Anyue Wang, Lei Lei, E. Lagunas, A. Pérez-Neira, S. Chatzinotas, B. Ottersten","doi":"10.1109/PIMRC.2019.8904429","DOIUrl":"https://doi.org/10.1109/PIMRC.2019.8904429","url":null,"abstract":"In a multi-beam satellite communication system, traffic requests are typically asymmetric across beams and highly heterogeneous among terminals. In practical operations, it is important to achieve a good match between the offered and requested traffic, i.e., to improve the performance of Offered Capacity to requested Traffic Ratio (OCTR). Due to satellites’ payload constraints and limited flexibilities, it is a challenging task for resource optimization. In this paper, we tackle this issue by formulating a max-min resource allocation problem, taking fairness into account such that the lowest OCTR can be maximized. To exploit the potential synergies, we introduce Non-Orthogonal Multiple Access (NOMA) to enable aggressive frequency reuse and mitigate intra-beam interference. Although NOMA has proven its capabilities in improving throughput and fairness in 5G terrestrial networks, for multi-beam satellite systems it is unclear if NOMA can help to enhance the OCTR performance, and hence is worth quantifying how much gain it can bring. To solve the problem, we design a suboptimal algorithm to firstly decompose the original problem into multiple convex subproblems by fixing power allocation for each beam, and secondly adjust beam power to improve the minimum OCTR in iterations. Numerical results show the convergence of the proposed algorithm and the superiority of the proposed NOMA scheme in max-min OCTR.","PeriodicalId":412182,"journal":{"name":"2019 IEEE 30th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)","volume":"69 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":"115622219","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

Energy Efficiency Maximization in Massive MIMO-aided, Fronthaul-constrained C-RAN 大规模mimo辅助、前端约束C-RAN的能效最大化

2019 IEEE 30th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC) Pub Date : 2019-09-01 DOI: 10.1109/PIMRC.2019.8904159

Jobin Francis, G. Fettweis

{"title":"Energy Efficiency Maximization in Massive MIMO-aided, Fronthaul-constrained C-RAN","authors":"Jobin Francis, G. Fettweis","doi":"10.1109/PIMRC.2019.8904159","DOIUrl":"https://doi.org/10.1109/PIMRC.2019.8904159","url":null,"abstract":"Cloud radio access network (C-RAN) and massive multiple-input-multiple-output (MIMO) are two key enabling technologies for 5G as they improve radio performance while lowering the cost of operation. In a C-RAN system with massive MIMO-based remote radio units (RRUs), fronthaul is often the bottleneck in practice due to its finite capacity. To reduce the capacity requirements on fronthaul, precoding is done at the RRUs. In this paper, we maximize the energy efficiency (EE) of such a system by optimizing the transmit powers while explicitly incorporating the capacity constraints on fronthaul. We develop a successive convex approximation (SCA) algorithm, which is guaranteed to converge to a local optimum. Towards this, we propose novel bounds on the user rate function, which facilitates a convex approximation of the EE maximization problem. The convex problem is solved in each SCA iteration through Dinkel-bach’s algorithm and dual decomposition. Numerical results show that the proposed algorithm significantly improves EE compared to the case with no power control and outperforms the weighted minimum mean square error algorithm.","PeriodicalId":412182,"journal":{"name":"2019 IEEE 30th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)","volume":"110 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":"121220414","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

Precoding Optimization for NOMA UAV with Cellular Connections 蜂窝连接下NOMA无人机的预编码优化

2019 IEEE 30th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC) Pub Date : 2019-09-01 DOI: 10.1109/PIMRC.2019.8904351

Xiaowei Pang, Nan Zhao, Weile Zhang, Yunfei Chen, Jie Tang, Z. Ding, F. Adachi

{"title":"Precoding Optimization for NOMA UAV with Cellular Connections","authors":"Xiaowei Pang, Nan Zhao, Weile Zhang, Yunfei Chen, Jie Tang, Z. Ding, F. Adachi","doi":"10.1109/PIMRC.2019.8904351","DOIUrl":"https://doi.org/10.1109/PIMRC.2019.8904351","url":null,"abstract":"In this paper, we investigate the uplink transmission in a cellular network from a UAV and ground users to ground base stations (BSs). Specifically, we aim to maximize the sum rate of the uplink from the UAV to ground BSs in a specific idle frequency band as well as from the co-channel users to their associated BSs by optimizing precoding vectors at UAV. To mitigate the interference, we apply successive interference cancellation (SIC) not only to the BSs connected with UAV using non-orthogonal multiple access (NOMA) for transmission, but also to other BSs communicating with ground users in the same band. The precoding optimization problem with constraints on the SIC decoding and the uplink transmission rate is formulated, which is non-convex and intractable. Thus, we introduce auxiliary variables and apply first-order approximations based on Taylor expansion to convert it into a second-order cone programming. An iterative algorithm is proposed with low complexity to calculate the solution to the non-convex precoding optimization problem. Numerical results demonstrate the effectiveness of our proposed scheme.","PeriodicalId":412182,"journal":{"name":"2019 IEEE 30th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)","volume":"37 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":"127112671","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

Low-Latency Exchange of Common Randomness for Group-Key Generation 用于组密钥生成的公共随机性的低延迟交换

2019 IEEE 30th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC) Pub Date : 2019-09-01 DOI: 10.1109/PIMRC.2019.8904207

M. Rao, J. Harshan

{"title":"Low-Latency Exchange of Common Randomness for Group-Key Generation","authors":"M. Rao, J. Harshan","doi":"10.1109/PIMRC.2019.8904207","DOIUrl":"https://doi.org/10.1109/PIMRC.2019.8904207","url":null,"abstract":"In physical-layer Group Secret-Key (GSK) generation, multiple nodes of a wireless network synthesize symmetric keys by observing a subset of their channel realizations, referred to as the common source of randomness (CSR). Unlike the case of two-user key generation, exchanging pilot symbols within the coherence-block is not sufficient to arrive at a CSR. In addition, some nodes must act as facilitators by broadcasting linear combinations of the channel realizations within the coherence-block, thereby giving rise to low-latency requirement for sharing the CSR. To assist the latency constraint, practical radio devices are forced to quantize the linear combination of channel realizations directly to finite complex constellations before broadcasting them to the other nodes. First, we show that this direct quantization at the facilitator results in asymmetric noise levels at the nodes, which in turn impacts the overall key-rate.Identifying the above issue, we propose a practical GSK generation protocol, referred to as Algebraic Symmetrically Quantized GSK (A-SQGSK) protocol, in a network of three nodes. In the proposed protocol, due to quantization of symbols at the facilitator, the other two nodes also quantize their channel realizations, and use them appropriately over algebraic rings to generate the keys. Under special conditions, we analytically show that the A-SQGSK protocol provides higher key-rate than the baselines, and also prove that the proposed protocol incurs zero leakage to an external eavesdropper. We also use extensive simulation results to demonstrate the benefits of the proposed protocol at different regimes of signal-to-noise-ratios.","PeriodicalId":412182,"journal":{"name":"2019 IEEE 30th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)","volume":"29 2 Suppl 5 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":"123435314","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

Faulty Data Detection in mMTC Based E-health Data Collection Networks 基于mMTC的电子卫生数据采集网络故障数据检测

2019 IEEE 30th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC) Pub Date : 2019-09-01 DOI: 10.1109/PIMRC.2019.8904253

Yacong Liang, Xiaodong Xu, Shujun Han, Ziting Zhang, Y. Sun

{"title":"Faulty Data Detection in mMTC Based E-health Data Collection Networks","authors":"Yacong Liang, Xiaodong Xu, Shujun Han, Ziting Zhang, Y. Sun","doi":"10.1109/PIMRC.2019.8904253","DOIUrl":"https://doi.org/10.1109/PIMRC.2019.8904253","url":null,"abstract":"In the fifth generation mobile communication (5G) and beyond, massive machine type communication (mMTC) is regarded as a key technology to support the universal Internet of Things (IoT) devices. As a promising vertical application area of IoT, e-health received many attentions from academic, medical and industry. To provide reliable suggestions for doctor, guaranteeing the authenticity of the sensory data during the data collection procedure is the first and fundamental step. Focusing on the mMTC based e-health data collection scenario, we propose the threshold-based decision faulty sensory data detection (FSDD) scheme by analyzing the correlation among several physiological parameters to guarantee the authenticity of the collected data. In the proposed FSDD scheme, machine learning algorithm is exploited to predict the ground truth value of a certain physiological parameter. By searching the dynamic optimized threshold to optimize the performance of the system, the FSDD scheme provides great performance improvement in high detection accuracy and low false alarm. Furthermore, the proposed FSDD scheme can recognize the deteriorated health condition. The effectiveness of proposed FSDD scheme is verified by simulating on a real medical database.","PeriodicalId":412182,"journal":{"name":"2019 IEEE 30th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)","volume":"58 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":"127000570","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

Handover Delay Mitigation for Korean Radio-based Train Control System 韩式无线电列车控制系统切换延迟缓解

2019 IEEE 30th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC) Pub Date : 2019-09-01 DOI: 10.1109/PIMRC.2019.8904252

Sangchul Oh, Byungsik Yoon, Woosik Oh, Dongjoon Kim, Dongil Sung

引用次数: 4

Digital Self-Interference Cancellation in the Presence of Phase Noise for Full-Duplex Communications 全双工通信中存在相位噪声的数字自干扰消除

2019 IEEE 30th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC) Pub Date : 2019-09-01 DOI: 10.1109/PIMRC.2019.8904123

Qiang Xu, Chenxing Li, Y. Liu, Xin Quan, Youxi Tang

{"title":"Digital Self-Interference Cancellation in the Presence of Phase Noise for Full-Duplex Communications","authors":"Qiang Xu, Chenxing Li, Y. Liu, Xin Quan, Youxi Tang","doi":"10.1109/PIMRC.2019.8904123","DOIUrl":"https://doi.org/10.1109/PIMRC.2019.8904123","url":null,"abstract":"In wireless full-duplex communication systems, selfinterference (SI) cancellation is a key technique to ensure simultaneous transmission and reception on the same carrier frequency. During the SI cancellation, it has been shown that the oscillator phase noise dramatically affects the cancellation capability and thus needs consideration and suppression. In this paper, a novel time-domain digital SI cancellation approach is proposed to cancel the transmitter and receiver phase noises along with the incoming SI signal, without estimating either the SI channel response or the phase noise associated coefficients. For proofof-concept evaluation, simulations are performed on orthogonal frequency division multiplexing (OFDM)-modulated signals of 20 MHz bandwidth with 16 QAM constellations to verify the effectiveness of the proposed method. It is demonstrated that the proposed approach provides at least 3 dB improvement on the SI cancellation capability and at least 5 dB increase on the interference tolerance over the conventional cancellation approach that uses the frequency domain SI channel estimation.","PeriodicalId":412182,"journal":{"name":"2019 IEEE 30th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)","volume":"72 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":"122826915","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

Learning to Decode Polar Codes with Quantized LLRs Passing 通过量化llr学习解码极性码

2019 IEEE 30th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC) Pub Date : 2019-09-01 DOI: 10.1109/PIMRC.2019.8904378

Jian Gao, Jincheng Dai, K. Niu

引用次数: 1

A Mobility-aware Proactive Caching Strategy in Heterogeneous Ultra-Dense Networks 异构超密集网络中移动性感知的主动缓存策略

2019 IEEE 30th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC) Pub Date : 2019-09-01 DOI: 10.1109/PIMRC.2019.8904364

Ning Gao, Xiaodong Xu, Yanzhao Hou, Lei Gao

引用次数: 5

FDD Multiuser Massive MIMO Systems with Adaptive Channel Covariance Feedback 自适应信道协方差反馈的FDD多用户大规模MIMO系统

2019 IEEE 30th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC) Pub Date : 2019-09-01 DOI: 10.1109/PIMRC.2019.8904451

Samer Bazzi, Wen Xu

引用次数: 0