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Performance analysis of smart cultural heritage protection oriented wireless networks
Wang, YuPeng,Dai, Xin,Jung, Jason J.,Choi, Chang North-Holland 2018 Future generations computer systems Vol.81 No.-
<P><B>Abstract</B></P> <P>Currently, Internet of Things (IoT) and wireless sensor network (WSN) techniques are widely used in the cultural heritage protection oriented networks for the environment monitoring, security enhancement issues, and <I>etc</I>. However, the low transmission rate and expandability of IoT and WSN limit the application variety of heritage protection networks. In this paper, we introduce the concept of device to device (D2D) communication manner from the 5G mobile network into the smart cultural heritage protection networks to solve the problems of various service requirement and coverage hole due to the location of the heritage. To enable the direct transmission among nodes, flooding based broadcast message transmission is widely utilized, which is used to obtain the prior knowledge that will be further used in the neighbor discovery, routing and other procedures. In this paper, we analyze the performance of flooding based broadcast message reception in D2D mode, where the influence of random time slot selection and message collision are reflected. Based on the random time slot selection manner and the related random process theory, we established the close form expression on the average number of received broadcast messages in the case of D2D without the coordination of central control node. Then, the proposed close form expression is validated through a numerical analysis platform. From the validation results, we find that the introduced closed form expression on the average number of received D2D broadcast packets is consistent with the simulation results.</P> <P><B>Highlights</B></P> <P> <UL> <LI> We introduce D2D into Smart CH to enhance service provision variety. </LI> <LI> The procedure of flooding based message transmission in D2D of smart CH is analyzed. </LI> <LI> We propose a close-form analysis model for D2D in smart CH. </LI> </UL> </P>
Double-Dwell Hybrid Acquisition in a DS-UWB System
Yupeng Wang,장경희 한국전자통신연구원 2007 ETRI Journal Vol.29 No.1
In this paper, we analyze the performance of doubledwell hybrid initial acquisition in a direct sequence ultrawideband (DS-UWB) system via detection, miss, false alarm probabilities, and mean acquisition time. In the analysis, we consider the effect of the acquisition sequence as well as the deployment scenario of the abundant multipath components over small coverage of the piconet in the DS-UWB system. Based on the simulation, we obtain various performance measures for the mean acquisition time by varying parameters such as the total number of hypotheses to be searched, subgroup size, and dwell time. We thereupon suggest the optimum parameter set for the initial acquisition in the DS-UWB system.
YuPeng Wang(왕우붕),KyungHi Chang(장경희) 한국통신학회 2008 韓國通信學會論文誌 Vol.33 No.3A
In this paper, we analyze the M-WiMAX UL capacity limits under 2-Tier cell layout, considering the effects of random user position, path loss models, fading channel and adjacent channel interference from WCDMA system. In order to make the analysis approximate to the practical system capacity, we propose a MCS-based capacity analysis method considering the effects of PER requirement and the utilized MCS levels in M-WiMAX system. The proposed MCS-based method is validated through a system-level Monte Carlo simulation. Furthermore, a comparison between the conventional Shannon method and the proposed MCS-based method is presented and the optimum cell radius is suggested.
Wang, Yupeng,Kim, Jung-Ju,Chang, Kyung-Hi The Korea Institute of Information and Commucation 2005 韓國通信學會論文誌 Vol.30 No.10A
In this paper, the performances of a single-user DS-UWB system applying two simple proposed channel estimation schemes are introduced, according to the newly updated DS-UWB PHY Layer standard from IEEE P802.15.3a. The performances of error control coding, different combining schemes in selective Rake receiver for DS-UWB system are analyzed. Both of the two channel estimation schemes using data-independent structure work well in DS-UWB system with few pilot bits. For the purpose of channel estimation and reduces the number of pilot bits, we apply a pilot symbol spreaded with $2{^8}-1\;or\;2{^9}-1$ periods of m-sequence for different channel estimation schemes.
Wang, YuPeng,Shrestha, Suchitra,Chang, KyungHi John Wiley Sons, Ltd. 2010 International Journal of Communication Systems Vol.23 No.2
<P>In this paper, we jointly optimize the position of the relay node and transmission power ratio of the source node over the relay node to minimize the outage probability, which can provide guidance for IEEE 802.16j transparent relay node configuration. The result indicates that the outage probability is minimum when the relay is positioned at the midway between the source and the destination, and the transmission power ratio of the source node over the relay node is 11:9. Copyright © 2009 John Wiley & Sons, Ltd.</P> <B>Graphic Abstract</B> <P>In this paper, we jointly optimize the position of the relay node and transmission power ratio of the source node over the relay node to minimize the outage probability, which can provide guidance for IEEE 802.16j transparent relay node configuration. The result indicates that the outage probability is minimum when the relay is positioned at the midway between the source and destination, and the transmission power ratio of the source node over the relay node is 11:9. Copyright © 2009 John Wiley & Sons, Ltd. <img src='wiley_img/10745351-2010-23-2-DAC1061-gra001.gif' alt='wiley_img/10745351-2010-23-2-DAC1061-gra001'> </P>
A novel energy-efficient neighbor discovery procedure in a wireless self-organization network
Wang, Yupeng,Yu, Zelong,Huang, Jun,Choi, Chang Elsevier science 2019 Information sciences Vol.476 No.-
<P><B>Abstract</B></P> <P>Neighbor discovery plays a major role in the wireless self-organizing network, which is the cornerstone for the autonomous coverage extension and performance enhancement such as cooperative transmission and multi-hop transmission. However, the hidden node problem is frequently encountered in neighbor discovery procedure based on the simple flooding due to the uncoordinated transmission, which gives rise to unnecessary energy waste. In this paper, the hidden node problem in the conventional neighbor discovery procedure is analyzed. A novel neighbor discovery procedure with the ability of node distance estimation and power allocation for the packet retransmission after collision is proposed, which utilizes fuzzy location information to properly configure the transmission power of the collided packets for better reception. The proposed algorithm improves the power efficiency of the neighbor discovery procedure by reducing the number of transmissions required for the successful reception with negligible induced complexity. Through the Monte-Carlo simulation, the proposed procedure with fuzzy location information and the power allocation method outperforms the conventional procedure in different node population scenarios, and the proposed procedure is insensitive to the distance estimation error, displaying strong robustness.</P> <P><B>Highlights</B></P> <P> <UL> <LI> A novel neighbor discovery procedure is proposed to improve the energy efficiency. </LI> <LI> A new Beacon signal is used to assist the proposed procedure for packet collision indication and further power allocation. </LI> <LI> An autonomous location deduction based power allocation method is proposed to reduce overhead and collision probability. </LI> </UL> </P>