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Human behavior detection has become increasingly significant in various fields of application. In this paper, we propose a device-free indoor human behavior detection method with channel state information (CSI) and principal component analysis (PCA), respectively, in the line of sight environment, non-line-of-sight environment, and through the wall environment experiments. We divide this method into...
Received signal strength indicator (RSSI)-based localization attracting a great deal of research interest since it requires a relatively low configuration, battery power and easy control. However, the indoor localization algorithm based on RSSI is easy to be influenced by the channel interference and the environment. In this paper, a novel method is presented for improving the accuracy of indoor localization,...
The work focuses on the max link selection (MLS) schemes of buffer-aided relaying over the independent and non-identically distributed (i.ni.d) Nakagami-m fading channels in terms of outage probability, average packet delay, and improved diversity-delay trade-off schemes. By modeling the transition of buffer states as a Markov chain, we first obtain the outage probability and average packet delays...
In this paper, a comprehensive comparison analysis in terms of outage probability and average symbol error ratio (SER) is presented for cooperative cognitive multiple-input and multiple-output (CC-MIMO) multiuser systems with amplify-and-forward (AF) protocol. Specially, we consider two scenarios where the CC-MIMO multiuser systems have the perfect and imperfect channel state information (CSI). The...
Based on decode-and-forward (DF) protocol, this work focuses on the adaptive power allocation and outage performance of underlay cognitive radio and opportunistic relaying (UCR-OR) systems with direct path between cognitive source and destination. The UCR-OR systems suffer from the interference of multiple primary user (PU) pairs. Under the outage constraint of PUs and the cognitive peak transmit...
This paper presents a distance education Website based on WEB2.0 CMS system, which is used in the United Nations development program (UNDP) 403 project. The implementation of this project will pilot sustainable models for distance teacher education in remote rural areas in northwestern provinces The paper begins with an introduction about the UNDP 403 project initiatives and presents the system design,...
This paper presents a distance teacher training system implemented using Struts+Hibernate, which is a portion of the United Nations Development Programme (UNDP) 403 project. The system is used for providing training to in-service female teachers, substitute teachers and ethnic/language minority teachers in Gansu Province, China. The paper begins with an introduction about the UNDP 403 project initiatives...
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