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Cross-Layer Cooperative Scheduling Scheme for Multi-channel Hybrid Ubiquitous Sensor Networks
Yingji Zhong,Qinghai Yang,곽경섭,Dongfeng Yuan 한국전자통신연구원 2008 ETRI Journal Vol.30 No.5
The multi-scenario topology of multi-channel hybrid ubiquitous sensor networks (USNs) is studied and a novel link auto-diversity cross-layer cooperative scheduling scheme is proposed in this paper. The proposed scheme integrates the attributes of the new performance evaluation link auto-diversity air-time metric and the topology space in the given multi-scenario. The proposed scheme is compared with other schemes, and its superiority is demonstrated through simulations. The simulation results show that relative energy consumption, link reception probability, and end-to-end blocking probability are improved. The addressing ratio of success with unchanged parameters and external information can be increased. The network can tolerate more hops to support reliable transportation when the proposed scheme is implemented. Moreover, the scheme can make the network stable. Therefore, the proposed scheme can enhance the average rate performance of the hybrid USN and stabilize the outage probability.
Yingji Zhong,Kyung Sup Kwak 대한전자공학회 2008 ITC-CSCC :International Technical Conference on Ci Vol.2008 No.7
A special scenario of the topology in the multiradio multi-channel hybrid Ad Hoc networks is studied and a new cross layer topology control scheme based on IEEE 802.16e is proposed in this paper. The proposed scheme integrated the attributes both of the new performance evaluation machine check time metric and the topology space in the special scenario. Due to the minimum link occupation, the traffic requirements, the maximal amount of the permitted hops, the aggregated throughput and the scheme overhead are all optimized with the different metrics.
Outage Probability of Opportunistic Amplify-and- Forward Relaying in Nakagami-m Fading Channels
Qinghai Yang,Yingji Zhong,곽경섭,Fenglin Fu 한국전자통신연구원 2008 ETRI Journal Vol.30 No.4
We address the outage performance for the opportunistic amplify-and-forward relaying strategies under Nakagami-m fading channels. A closed-form expression for the outage probability is derived. Simulation results verify our theoretical solutions.
Symbol Error Rate of Cooperative Transmission Using OSTBC
YANG, Qinghai,ZHONG, Yingji,KWAK, Kyung Sup The Institute of Electronics, Information and Comm 2009 IEICE TRANSACTIONS ON COMMUNICATIONS - Vol.92 No.1
<P>We investigate the symbol error rate (SER) of the cooperative transmission with the decode-and-forward relay protocol under Rayleigh fading channels. The technique of orthogonal space-time block coding (OSTBC) is applied at the links source-relay, source-destination and relay-destination. A closed-form SER expression is derived. Simulation results demonstrate the theoretical solutions.</P>
Luzhong mutton sheep: inbreeding and selection signatures
Lin Tao,Xiaoyun He,Fengyan Wang,Yingjie Zhong,Linxiang Pan,Xiangyu Wang,Shangquan Gan,Ran Di,Ming-xing Chu 한국축산학회 2020 한국축산학회지 Vol.62 No.6
Intense artificial selection has been imposed to Luzhong mutton sheep population in the past years. Improvements on growth and reproductive performance are two breeding goals in the present herd. Although some progresses were phenotypically observed possibly due to inbreeding induced by strong selection in terms of these traits, the genomic evaluation was poorly understood. Therefore, a high-density SNP array was used to characterize the pattern of runs of homozygosity (ROH), estimate inbreeding and inbreeding depressions on early growth performance and litter size based upon ROH, and scan positive selection signatures of recent population. Consequently, a low inbreeding level was observed which had negative effects on litter size, but not on early growth performance. And 160 genes were under selection, of which some were reported to be linked to several traits of sheep including body weight, litter size, carcass and meat quality, milk yield and composition, fiber quality and health, and the top genes were associated with growth (growth hormone [GH]- growth hormone receptor [GHR]- Insulin-like growth factor 1 [IGF1] axis) and litter size (bone morphogenic proteins [BMPs]-associated). The effectiveness of previous breeding measures was highlighted, but purging selection was proposed to alleviate the inbreeding depression on litter size, providing some genomic insights to breeding management of Luzhong mutton sheep.
Ullah, Sana,Saleem, Shahnaz,Higgins, Henry,Ullah, Niamat,Zhong, Yingji,Kwak, Kyung Sup Hindawi Publishing Corporation 2010 Eurasip Journal on Wireless Communications and Net Vol.2010 No.-
<P>The performance of the implant inside a human body with polarisation, distance, and different power settings at the base-station is presented. In addition, the unslotted CSMA/CA protocol is studied for a heterogeneous WBAN.</P>