【摘 要】
：
The ubiquity of wireless communication systems has resulted in extensive concern regarding their security issues.A practical secure transmission scheme based on under-sampling spectrum-sparse signals is designed.Secure transmission is initialized as the i
【机 构】
：
School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876
论文部分内容阅读
The ubiquity of wireless communication systems has resulted in extensive concern regarding their security issues.A practical secure transmission scheme based on under-sampling spectrum-sparse signals is designed.Secure transmission is initialized as the intended receiver transmits a pilot signal for the transmitter,to perform channel sounding and clock synchronization according to the channel reciprocal principle.Then,sampling clock offset compensation and precoding method based on channel state information (CSI) can be conducted at the transmitter\'s end.Because the intended receiver adopts an under-sampling method based on active aliasing which depends very sensitively on accurate sampling clock and CSI,the eavesdroppers can hardly intercept the signal.Closed form expression of symbol error rate (SER) at the intended receiver\'s end and secrecy capacity in fading wiretap channel has been derived.Numerical evaluation and simulations are carried out to validate the effectiveness of the proposed strategy.
其他文献
Low earth orbit (LEO) satellite network provides global coverage and supports a wide range of services.However,due to the rapid changes and energy-limitation of satellites,how to meet the demand of the quality of service (QoS) from ground traffic and prol
Recently,physical layer security in wireless communication system attracts much attention,and the reconciliation protocol plays an important role in the final secure key distillation,since the secret keys extracted from the realistic characteristics of th
Paxos is a well-known distributed algorithm that provides strong consistency.However,the original Paxos has several shortcomings,including those of slow elections,redundant communications and excessive traffic of the coordinator node.In order to tackle th
Hybrid analog-digital beamforming is recognized as a promising solution for a practical implementation of massive multiple-input multiple-output (MIMO) systems based on millimeter-wave (mmWave) technology.In view of the overwhelming hardware cost and exce
Mobility prediction is one of the promising technologies for improving quality of service (QoS) and network resource utilization.In future heterogeneous networks (HetNets),the network topology will become extremely complicated due to the widespread deploy
Updatable block-level message-locked encryption (MLE) can efficiently update encrypted data,and public auditing can verify the integrity of cloud storage data by utilizing a third party auditor (TPA).However,there are seldom schemes supporting both updata
Using relay in the wireless communication network is an efficient way to ensure the data transmission to the distant receiver.In this paper,a dynamic power control (DPC) approach is proposed for the amplify-and-forward (AF) relay-aided downlink transmissi
Real-time graphics processing is all along a crucial task of mobile device,and it is conventionally supported by programmable graphics processing unit (GPU).These GPUs are designed to flexibly support vertex and pixel processing with classic techniques su
Aiming at the problem that more popular network application and more complicated network traffic bring big challenge to current Trojan detecting technique,communication behavior of remote access Trojan (RAT) is analyzed,traffic features\' different perf
A novel low profile multiband rectenna was proposed for harvesting the 2nd generation(2G),the 3rd generation (3G),the 4th generation (4G),wireless local area networks (WLANs) etc.,electromagnetic wave energy.The proposed rectenna consists of a novel multi