2018 IEEE 19th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)最新文献_第5页

Bounds on Channel Parameter Estimation with 1-Bit Quantization and Oversampling 1位量化和过采样信道参数估计的边界

2018 IEEE 19th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2018-06-01 DOI: 10.1109/SPAWC.2018.8445905

Martin Schlüter, Meik Dörpinghaus, G. Fettweis

{"title":"Bounds on Channel Parameter Estimation with 1-Bit Quantization and Oversampling","authors":"Martin Schlüter, Meik Dörpinghaus, G. Fettweis","doi":"10.1109/SPAWC.2018.8445905","DOIUrl":"https://doi.org/10.1109/SPAWC.2018.8445905","url":null,"abstract":"In the design of energy-efficient communication systems with very high bandwidths, the analog-to-digital converter (ADC) plays a crucial role, since its energy consumption grows exponentially with the number of quantization bits. However, high resolution in time domain is less difficult to achieve than high resolution in amplitude domain. This motivates for the design of receivers with L-bit quantization and oversampling w.r.t. Nyquist rate. On the downside, standard receiver synchronization algorithms cannot be applied, since L-bit quantization is a highly non-linear function. To understand the channel parameter estimation performance of such a receiver, the Fisher information (FI) is a helpful measure. Since the closed form evaluation of the FI is not possible for correlated Gaussian noise, we give a lower bound that is an extension of a lower bound by Stein et al. to complex valued channel outputs. If the noise is white, the lower bound is tight. Furthermore, we apply the lower bound for the evaluation of the performance of carrier phase estimation of a QPSK based communication system. We show that for any SNR level oversampling reduces the performance loss due to 1-bit quantization. In the mid and low SNR regime, oversampling reduces the performance loss beyond the loss of 2π encountered in case of 1-bit quantization at Nyquist sampling in the low SNR regime.","PeriodicalId":240036,"journal":{"name":"2018 IEEE 19th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128568217","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: 23

Interference Management via User Clustering in Two-Stage Precoder Design 基于用户聚类的两阶段预编码器干扰管理

2018 IEEE 19th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2018-06-01 DOI: 10.1109/SPAWC.2018.8446017

Ayswarya Padmanabhan, Antti Tölli

{"title":"Interference Management via User Clustering in Two-Stage Precoder Design","authors":"Ayswarya Padmanabhan, Antti Tölli","doi":"10.1109/SPAWC.2018.8446017","DOIUrl":"https://doi.org/10.1109/SPAWC.2018.8446017","url":null,"abstract":"We consider a single cell downlink (DL) massive multiple-input multiple-output (MIMO) set-up with user clustering based on statistical information. The problem is to design a fully digital two-stage beamforming aiming to reduce the complexity involved in the conventional MIMO processing. The fully digital two-stage beamforming consists of a slow varying channel statistics based outer beamformer (OBF) and an inner beamformer (IBF) accounting for fast channel variations. Two different methods are presented to design the OBF matrix, so as to reduce the size of effective channel used for IBF design. A group specific two-stage optimization problem with weighted sum rate maximization (WSRM) objective is formulated to find the IBF for fixed OBF. We begin by proposing centralized IBF design were the optimization is carried out for all sub group jointly with user specific inter-group interference constraints. In order to further reduce the complexity, we also propose a group specific IBF design by fixing the inter group interference to a constant or by ignoring them from the problem altogether. In spite of incurring a small loss in performance, the computational complexity can be saved to a large extent with the group specific processing. Numerical experiments are used to demonstrate the performance of various proposed schemes by comparing the total sum rate of all users and the design complexity.","PeriodicalId":240036,"journal":{"name":"2018 IEEE 19th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130890237","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

Selective Signal Detection with Ligand Receptors Under Interference in Molecular Communications 分子通信干扰下配体受体的选择性信号检测

2018 IEEE 19th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2018-06-01 DOI: 10.1109/SPAWC.2018.8445876

G. Muzio, M. Kuscu, Ö. Akan

{"title":"Selective Signal Detection with Ligand Receptors Under Interference in Molecular Communications","authors":"G. Muzio, M. Kuscu, Ö. Akan","doi":"10.1109/SPAWC.2018.8445876","DOIUrl":"https://doi.org/10.1109/SPAWC.2018.8445876","url":null,"abstract":"Molecular Communications (MC) is a bio-inspired wireless communication technique that uses molecules as a means of information transfer among bio-nano devices. In this paper, we focus on the signal detection problem of MC receivers employing receptor molecules to infer the transmitted messages encoded into the concentration of molecules, i.e., ligands. We particularly consider a very common scenario in physiological conditions, where there is non-negligible concentration of interferer molecules in the channel, which have similar binding characteristics with the ligands, and thus, can bind to the receptors, causing substantial interference with the MC signal. We investigate three different maximum likelihood (ML) detection methods based on different observable parameters of the ligand-receptor binding mechanism, which are the instantaneous number of bound receptors and the amount of time the receptors stay unbound or bound within an observation time window. We carry out a comparative analysis to numerically evaluate the performance of the detection methods under different system settings.","PeriodicalId":240036,"journal":{"name":"2018 IEEE 19th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115970071","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: 5

Topological Interference Alignment via Generalized Low-Rank Optimization with Sequential Convex Approximations 基于序列凸逼近的广义低秩优化拓扑干涉对齐

2018 IEEE 19th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2018-06-01 DOI: 10.1109/SPAWC.2018.8445983

Fan Zhang, Qiong Wu, Hao Wang, Yuanming Shi

{"title":"Topological Interference Alignment via Generalized Low-Rank Optimization with Sequential Convex Approximations","authors":"Fan Zhang, Qiong Wu, Hao Wang, Yuanming Shi","doi":"10.1109/SPAWC.2018.8445983","DOIUrl":"https://doi.org/10.1109/SPAWC.2018.8445983","url":null,"abstract":"In this paper, we consider solving the topological interference management (TIM) problem by using a generalized low-rank matrix completion (LRMC) model, thereby maximizing the achievable degrees of freedom (DoF) only based on the network connectivity information. The LRMC problem is NP-hard due to the nonconvex rank objective function. The nuclear norm relaxation fails as it always returns a full-rank matrix in our model. Another approach named Riemannian Pursuit (RP) is often inefficient for finding highly accurate feasible solutions. We thus propose a novel Generalized Low-Rank Optimization along with the Difference of Convex Algorithm (GLRO-DCA), which aims to find a low-rank solution while always keeping the feasiblity. The GLRO-DCA increases the rank consecutively and solves the associated fixed-rank LRMC problem, where the generalized fixed-rank LRMC problem is reformulated by minimizing the difference between the nuclear norm and the Ky Fan norm and solved by the DCA. We accelerate the DCA by applying extrapolation techniques to improve the computational efficiency. Numerical results exhibit the ability of our proposed GLRO-DCA for the TIM problem to find low-rank solutions, which is superior to the existing nuclear norm relaxation approach and the RP approach.","PeriodicalId":240036,"journal":{"name":"2018 IEEE 19th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)","volume":"118 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116010316","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

Reflection of Modulated Radio (ReMoRa): Link Analysis of Ambient Scatter Radio Using Perfect Pulses 调制无线电的反射:使用完美脉冲的环境散射无线电链路分析

2018 IEEE 19th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2018-06-01 DOI: 10.1109/SPAWC.2018.8445881

Michael A. Varner, G. Durgin

引用次数: 1

Power-Efficient Multi-User Dual-Function Radar-Communications 高能效多用户双功能雷达通信

2018 IEEE 19th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2018-06-01 DOI: 10.1109/SPAWC.2018.8445963

Ammar Ahmed, Yujie Gu, D. Silage, Yimin D. Zhang

引用次数: 17

A General Coding Scheme for Signaling Gaussian Processes Over Gaussian Decision Models 基于高斯决策模型的信令高斯过程通用编码方案

2018 IEEE 19th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2018-06-01 DOI: 10.1109/SPAWC.2018.8445982

C. Charalambous, C. Kourtellaris, Themistoklis Charalambous

引用次数: 1

Robust 3D Localization of Underwater Optical Wireless Sensor Networks via Low Rank Matrix Completion 基于低秩矩阵补全的水下无线光学传感器网络鲁棒三维定位

2018 IEEE 19th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2018-06-01 DOI: 10.1109/SPAWC.2018.8445953

N. Saeed, Abdulkadir Celik, T. Al-Naffouri, Mohamed-Slim Alouini

{"title":"Robust 3D Localization of Underwater Optical Wireless Sensor Networks via Low Rank Matrix Completion","authors":"N. Saeed, Abdulkadir Celik, T. Al-Naffouri, Mohamed-Slim Alouini","doi":"10.1109/SPAWC.2018.8445953","DOIUrl":"https://doi.org/10.1109/SPAWC.2018.8445953","url":null,"abstract":"Location is one of the basic information required for underwater optical wireless sensor networks (UOWSNs) for three main purposes: 1) Relating the sensing measurements with precise sensor positions, 2) Enabling efficient routing techniques by exploiting the sensor locations, and 3) Sustaining link connectivity and performance via pointing and alignment mechanisms between the nodes. Even though various two-dimensional UOWSNs localization methods have been proposed in the past, the directivity of optical wireless communications and three dimensional (3D) deployment of sensors require to develop 3D underwater localization methods. Therefore, we propose a robust 3D localization method for partially connected UOWSNs with a limited number of anchors. The proposed method achieves an accurate 3D localization of all the nodes in the network by using a novel low-rank matrix approximation and outliers removal method. The performance of the proposed method is compared with the well known iterative majorization approach. The numerical results indicate that the proposed method outperforms the iterative majorization method substantially.","PeriodicalId":240036,"journal":{"name":"2018 IEEE 19th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127148876","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

Deterministic Annealing for Hybrid Beamforming Design in Multi-Cell MU-MIMO Systems 多小区MU-MIMO系统混合波束形成设计的确定性退火

2018 IEEE 19th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2018-06-01 DOI: 10.1109/SPAWC.2018.8446010

C. Thomas, D. Slock

{"title":"Deterministic Annealing for Hybrid Beamforming Design in Multi-Cell MU-MIMO Systems","authors":"C. Thomas, D. Slock","doi":"10.1109/SPAWC.2018.8446010","DOIUrl":"https://doi.org/10.1109/SPAWC.2018.8446010","url":null,"abstract":"This work deals with hybrid beamforming (HBF) for the MIMO Interfering Broadcast Channel (IBC), i.e. the Multi-Input Multi-Output (MIMO) Multi-User (MU) Multi-Cell downlink channel. HBF is a low complexity alternative to fully digital precoding in Massive MIMO systems. Hybrid architectures involve a combination of digital and analog processing that enables both beamforming and multiplexing gains. We consider BF design by maximizing the Weighted Sum Rate (WSR) for the case of Perfect Channel State Information at the Transmitter (CSIT). We optimize the WSR using minorization and alternating optimization, the result of which is observed to converge fast. We furthermore propose a deterministic annealing based approach to avoid issues of local optima that plague phase shifter constrained analog beamformers. Simulation results indicate that the proposed deterministic annealing based approach performs significantly better than state of the art Weighted Sum Mean Squared Error (WSMSE) or WSR based solutions. We also propose a closed form solution for the analog BF in case the number of RF chains equals or exceeds the total number of multipath components and the antenna array responses are phasors.","PeriodicalId":240036,"journal":{"name":"2018 IEEE 19th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130331216","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

Age-Optimal Channel Coding Blocklength for an M/G/1 Queue with HARQ 具有HARQ的M/G/1队列的年龄最优信道编码块长度

2018 IEEE 19th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2018-06-01 DOI: 10.1109/SPAWC.2018.8445909

Hakan Sac, Baran Tan Bacinoglu, E. Uysal-Biyikoglu, G. Durisi

{"title":"Age-Optimal Channel Coding Blocklength for an M/G/1 Queue with HARQ","authors":"Hakan Sac, Baran Tan Bacinoglu, E. Uysal-Biyikoglu, G. Durisi","doi":"10.1109/SPAWC.2018.8445909","DOIUrl":"https://doi.org/10.1109/SPAWC.2018.8445909","url":null,"abstract":"We consider a communication system in which a source transmits information updates to a destination node through a binary erasure channel (BEC). When a packet containing an information update, which consists of a fixed number of information bits, arrives at the transmitter, it gets queued in a buffer, to be encoded and sent over the channel. Before transmitting a packet, the transmitter selects a channel coding blocklength n and then uses an automatic repeat request (ARQ) protocol, whereby packets that are decoded incorrectly are repeated. The choice of the coding blocklength thus affects the end-to-end status age. However, this dependency is nontrivial since, on the one hand, the duration of a single transmission attempt is directly proportional to n, so the smaller n the better. On the other hand, a smaller value of the blocklength n yields a higher probability of decoding error, which increases the end-to-end status age. Employing recent finite-blocklength information-theoretic bounds and approximations on the rate achievable on a BEC for a given blocklength and a given error probability, we study the age-optimal design of this system. We find that for any nontrivial BEC, there exists an optimal blocklength that minimizes the average age and average peak age of information.","PeriodicalId":240036,"journal":{"name":"2018 IEEE 19th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131827781","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: 56