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IEEE Wireless Communications Letters
Year: 2022 | Volume: 11 | Issue: 5
Secure Transmission Design for Cooperative NOMA in the Presence of Internal Eavesdropping
Binbin Su;Wenjuan Yu;Hongbo Liu;Arsenia Chorti;H. Vincent Poor
Publication Year: 2022,Page(s):878 - 882
Cited by: Papers (16)
The application of successive interference cancellation (SIC) introduces critical security risks to cooperative non-orthogonal multiple access (NOMA) systems in the presence of untrustworthy network nodes, referred to as internal eavesdroppers. To address this potential security and reliability flaw, by assuming all users are untrusted, this letter investigates the effective secrecy throughput (ES...Show More
Stackelberg Game-Based Pricing and Offloading in Mobile Edge Computing
Publication Year: 2022,Page(s):883 - 887
Cited by: Papers (27)
Owing to the limited computing resources at the MEC server, reasonable strategies of resources pricing and task offloading are necessary to be designed. In this letter, a scenario of multi-users and single MEC server with limited computing resources is studied, where each end-user has a divisible task which could be offloaded portion to the MEC server for execution, both local and offloaded portio...Show More
Hierarchical-Block Sparse Bayesian Learning for Spatial Non-Stationary Massive MIMO Channel Estimation
Publication Year: 2022,Page(s):888 - 892
Cited by: Papers (8)
This letter provides a novel hierarchical-block channel estimation scheme for massive multiple-input multiple-output (MIMO) systems based on Bayesian learning frameworks. Specifically, considering the spatial non-stationarity of massive MIMO channels introduced by a large-scale antenna array, we first exploit a hierarchical-block prior to characterize the delay-domain sparse channel structure acro...Show More
Age-Efficient Concurrent Information Update Scheduling in Edge-Native Systems
Publication Year: 2022,Page(s):893 - 897
Age of information (AoI) has lately evolved as a promising performance metric to quantify the timeliness of information updates in communication systems. In this letter, we aim to address the concurrent information update scheduling problem in edge-native (EN) systems, where Internet-of-Things (IoT) devices provide information updates for the processing of EN tasks on edge servers. To this end, we...Show More
A Novel Joint Dataset and Computation Management Scheme for Energy-Efficient Federated Learning in Mobile Edge Computing
Publication Year: 2022,Page(s):898 - 902
Cited by: Papers (20)
In this letter, a novel joint dataset and computation management (DCM) scheme for energy-efficient federated learning (FL) in mobile edge computing (MEC) is proposed. For this purpose, with respect to the amount of dataset and computation resources, we rigorously formulated analytical models for i) learning efficiency, which considers the estimated global accuracy tendency according to the amount ...Show More
TransNet: Full Attention Network for CSI Feedback in FDD Massive MIMO System
Publication Year: 2022,Page(s):903 - 907
Cited by: Papers (65)
Channel state information (CSI) is a key aspect of massive multi-input multi-output (MIMO) system. It depicts important properties of transmission channels such as scattering, fading, the attenuation of power with distance, etc. The quality and cost of CSI feedback between user equipment (UE) and base station (BS) play vital roles in the quality of the whole communication system. In this letter, a...Show More
Binary Polarization Shift Keying With Reconfigurable Intelligent Surfaces
Publication Year: 2022,Page(s):908 - 912
Cited by: Papers (7)
We propose a novel binary polarization shift keying modulation scheme for a line-of-sight environment by exploiting the polarization control ability of the reconfigurable intelligent surface (RIS). The RIS encodes the information data in terms of the polarization states of either the reflected wave from the RIS or the composite wireless channel between an RF source and receiver. In the first case,...Show More
A Simple Method to Calculate Random-Coding Union Bounds for Ultra-Reliable Low-Latency Communications
Publication Year: 2022,Page(s):913 - 917
Cited by: Papers (3)
Ultra-Reliable Low-Latency Communications are based on very short codes whose performances cannot be evaluated correctly by using the Shannon capacity formula holding for asymptotically large code lengths. The use of Random-Coding Union Bounds (RCUB’s) has been suggested in the literature as an alternative for this application. Unfortunately, their calculation is difficult and the Gaussian approxi...Show More
Achieving Secrecy Energy Efficiency Fairness in UAV-Enabled Multi-User Communication Systems
Publication Year: 2022,Page(s):918 - 922
Cited by: Papers (9)
This letter investigates the secrecy energy efficiency (SEE) fairness of unmanned aerial vehicle (UAV)-enabled multi-user communication systems where a UAV disseminates data to multiple ground users (GUs) in the presence of an eavesdropper (EVE). Taking into account the security threats from EVE, the limited on-board energy of UAV and the fairness among GUs, we formulate a user-oriented SEE maximi...Show More
Federated Dropout—A Simple Approach for Enabling Federated Learning on Resource Constrained Devices
Publication Year: 2022,Page(s):923 - 927
Cited by: Papers (64)
Federated learning (FL) is a popular framework for training an AI model using distributed mobile data in a wireless network. It features data parallelism by distributing the learning task to multiple edge devices while attempting to preserve their local-data privacy. One main challenge confronting practical FL is that resource constrained devices struggle with the computation intensive task of upd...Show More
Intelligent Reflecting Surface-Aided Spectrum Sensing for Cognitive Radio
Publication Year: 2022,Page(s):928 - 932
Cited by: Papers (30)
Spectrum sensing is a key enabling technique for cognitive radio (CR), which provides essential information on the spectrum availability. However, due to severe wireless channel fading and path loss, the primary user (PU) signals received at the CR or secondary user (SU) can be practically too weak for reliable detection. To tackle this issue, we consider in this letter a new intelligent reflectin...Show More
Online Deep Neural Network for Optimization in Wireless Communications
Publication Year: 2022,Page(s):933 - 937
Cited by: Papers (13)
Recently, deep neural network (DNN) has been widely adopted in the design of intelligent communication systems thanks to its strong learning ability and low testing complexity. However, most offline DNN-based methods suffer from unsatisfactory performance, limited generalization ability, and poor interpretability. In this letter, we propose an online DNN-based approach to solve general optimizatio...Show More
Joint Optimal Power Allocation and Beamforming for MIMO-NOMA in mmWave Communications
Mohammad Reza Ghavidel Aghdam;Behzad Mozaffari Tazehkand;Reza Abdolee
Publication Year: 2022,Page(s):938 - 941
Cited by: Papers (10)
In this letter, we propose an optimal joint power allocation and beamforming for MIMO-NOMA in mmWave communications. In this method, to reduce the system overhead, we consider a random near random far (RNRF) pairing scheme in our NOMA data transmission. We formulate an optimization problem to find the optimal power allocation and random beamforming (RBF) coefficients to improve the system performa...Show More
Placement Optimization for Multi-IRS-Aided Wireless Communications: An Adaptive Differential Evolution Algorithm
Publication Year: 2022,Page(s):942 - 946
Cited by: Papers (16)
Using intelligent reflecting surfaces (IRSs) is a promising approach to enhance the performance of wireless communication systems. In this letter, the placement optimization of multi-IRSs is investigated in multi-IRS-aided wireless communication systems, with the aim of minimizing the number of IRSs subject to the average achievable data rate. Then, an adaptive differential evolution algorithm is ...Show More
An Improved EPA-Based Receiver Design for Uplink LDPC Coded SCMA System
Publication Year: 2022,Page(s):947 - 951
Cited by: Papers (9)
Sparse code multiple access (SCMA) is an emerging paradigm for efficient enabling of massive connectivity in future machine-type communications (MTC). In this letter, we conceive the uplink transmissions of the low-density parity check (LDPC) coded SCMA system. Traditional receiver design of LDPC-SCMA system, which is based on message passing algorithm (MPA) for multiuser detection followed by ind...Show More
Analysis, Estimation and Compensation of Hardware Impairments for CP-OTFS Systems
Publication Year: 2022,Page(s):952 - 956
Cited by: Papers (26)
Orthogonal time frequency space (OTFS) waveform, which is robust to doubly-selective fading channels is a strong contender for the Fifth generation (5G) communications. At high frequencies, hardware imperfections are prominent in practice at the transceivers. In this letter, we consider impairments such as carrier frequency offset (CFO), direct current (DC) offset and in-phase and quadrature (IQ) ...Show More
Robust Power Allocation in Optical Satellite MIMO Links With Pointing Jitter
Publication Year: 2022,Page(s):957 - 961
Cited by: Papers (3)
In this letter, an optical satellite system is considered comprised of a geostationary satellite with multiple transmitters on-board and an optical ground station with multiple receiving telescopes. $\mathbf {\mathrm {A}}$ robust power allocation strategy for the downlink is investigated incorporating the effects of the atmospheric impairments as well as the optical beam pointing jitter. Firstly...Show More
Performance Analysis of Terahertz Communications in Random Fog Conditions With Misalignment
Publication Year: 2022,Page(s):962 - 966
Cited by: Papers (24)
In this letter, we consider Terahertz (THz) communications in the presence of pointing error impairments (misalignment) and under random fog conditions. We derive closed-form expressions, in terms of I-function, for the probability density function (PDF) and the cumulative distribution function (CDF). Then, the PDF and the CDF are employed to derive closed-form expressions for the outage probabili...Show More
Super Resolution-Based Beam Selection With Hierarchical Codebook in mmWave Communication
Publication Year: 2022,Page(s):967 - 971
Cited by: Papers (4)
Beamforming is regarded as a promising technique for future wireless communication systems. In this regard, codebook-based beamforming offers satisfactory performance with acceptable computational complexity; however, it requires a high power-consumed beam overhead. To achieve balance between the utilized beam overhead and the achieved spectral efficiency performance, we propose a super-resolution...Show More
FBI: A Federated Learning-Based Blockchain-Embedded Data Accumulation Scheme Using Drones for Internet of Things
Publication Year: 2022,Page(s):972 - 976
Cited by: Papers (72)
This letter presents a federated learning-basd data-accumulation scheme that combines drones and blockchain for remote regions where Internet of Things devices face network scarcity and potential cyber threats. The scheme contains a two-phase authentication mechanism in which requests are first validated using a cuckoo filter, followed by a timestamp nonce. Secure accumulation is achieved by valid...Show More
UCA Based OAM Beam Steering With High Mode Isolation
Publication Year: 2022,Page(s):977 - 981
Cited by: Papers (12)
In the case of uniform circular array (UCA) based Orbital Angular Momentum (OAM) communications with misaligned transceivers, beam steering is needed to overcome the performance deterioration. To keep the vortex characteristics and the mode isolation of the steered OAM beam, we propose a Hybrid Position Phase Beam Steering (HPPBS) scheme in this letter. For the target deflection angle $(\theta,\p...Show More
Energy Efficiency Optimization for Irregular Repetition Slotted ALOHA-Based Massive Access
Zhengchuan Chen;Yifan Feng;Zhong Tian;Yunjian Jia;Min Wang;Tony Q. S. Quek
Publication Year: 2022,Page(s):982 - 986
Cited by: Papers (12)
Irregular repetition slotted ALOHA (IRSA) is a promising mechanism to support massive access in Internet of Things (IoT). As IoT devices are usually battery capacity-limited, the energy efficiency (EE) should be paid close attention to when operating the IRSA scheme. This letter improves the EE of devices by adjusting the transmit power and maximum number of packet replicas based on two high-throu...Show More
Hybrid Message Passing Approach for Uplink Massive MIMO Channel Estimation
Publication Year: 2022,Page(s):987 - 991
Cited by: Papers (9)
Massive MIMO channel has a sparse representation in the angular domain, but it is difficult to utilize such sparsity for uplink channel estimation due to the coupling effect caused by arbitrary pilots. The existing uplink channel estimation methods usually adopt a prior LS estimator to decouple pilots, and then recover the sparse channel with the decoupled signal. However, the prior LS estimator c...Show More
Hybrid Message Passing Approach for Uplink Massive MIMO Channel Estimation
Year: 2022 | Volume: 11 | Issue: 5
Contact Information
Editor-in-Chief
National Taiwan University, Department of Computer Science & Information Engineering
Taipei
Taiwan
acpang@csie.ntu.edu.twContact Information
Editor-in-Chief
National Taiwan University, Department of Computer Science & Information Engineering
Taipei
Taiwan
acpang@csie.ntu.edu.twIEEE Account
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