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| 1 | A feedback-retransmission based asynchronous frequency hopping MAC protocol for military aeronautical ad hoc networks显示文摘Attacking time-sensitive targets has rigid demands for the timeliness and reliability of information transmission, while typical Media Access Control(MAC) designed for this application works well only in very light-load scenarios; as a consequence, the performances of system throughput and channel utilization are degraded. For this problem, a feedback-retransmission based asynchronous FRequency hopping Media Access(FRMA) control protocol is proposed. Burst communication, asynchronous Frequency Hopping(FH), channel coding, and feedback retransmission are utilized in FRMA. With the mechanism of asynchronous FH, immediate packet transmission and multi-packet reception can be realized, and thus the timeliness is improved.Furthermore, reliability can be achieved via channel coding and feedback retransmission. With theories of queuing theory, Markov model, packets collision model, and discrete Laplace transformation, the formulas of packet success probability, system throughput, average packet end-to-end delay, and delay distribution are obtained. The approximation accuracy of theoretical derivation is verified by experimental results. Within a light-load network, the proposed FRMA has the ability of millisecond delay and 99% reliability as well as outperforms the non-feedback-retransmission based asynchronous frequency hopping media access control protocol. | Jinhui TANG Yequn WANG Shufu DONG Qilu SUN Guoce HUANG | 2018 | Chinese Journal of Aeronautics2018，31，5： | 4 |
| 2 | Application of CaCl2 sprays earlier in the season may reduce bitter pit inci- dence in ‘Braebum' apple 显示文摘 | Neilsen G Neilsen D Dong ShuFu | 2005 | HortScience2005，40，6： | 1 |
| 3 | Broadband Er:Tm co-doped silica fiber amplifier for DWDM application 显示文摘 | Dong Shufu Zhao Shanghong Shi Lei | 2004 | Proc of SHE2004，，5623： | 1 |
| 4 | Cultural Practices for Propagation of Spatholobus suberectus via Cutting into Polybags显示文摘In this paper,the propagation of Spatholobus suberectus Dunn.was optimized based on the research results conducted in propagation for many years and the actual need for the planting materials.According to the requirements of Good Agricultural Practices for Chinese Medicinal Drugs,cultural practices for propagation of S.suberectus were summed up and standardized,including the environmental requirements,land preparation,bed preparation,cutting of scions,cuttings treatment,cutting,management of cuttings at the nursery,bagged cuttings ready for transplanting,packing and handling,transportation,and preparation of records for archives. | Maojin YE Ribin HUANG Chunyun CHEN Dachang NING Su ZHANG Shufu CHEN Qingsong DONG | 2021 | Medicinal Plant2021，12，5： | 0 |
| 5 | Multiple transformation analysis for interference separation in TDCS显示文摘Various types of interference signals limit the practical application of transform domain communication systems(TDCSs)in the severe electromagnetic field,an orthogonal basis learning method of transformation analysis(OBL-TA)is proposed to effectively address the problem of obtaining an optimal transform domain based on sparse representation.Then,the sparse availability is utilized to obtain the optimal transformation analysis by the iterative methods,which yields the sparse representation for transform domain(SRTD)in unrestricted form.In addition,the iterative version of SRTD(I-SRTD)in unrestricted form is obtained by decomposing the SRTD problem into three sub-problems and each sub-problem is iteratively solved by learning the best orthogonal basis.Furthermore,orthogonal basis learning via cost function minimization process is conducted by stochastic descent,which is assured to converge to a local minimum at least.Finally,the optimal transformation analysis is developed by the effectiveness of different transform domains according to the accuracy of the sparse representation and an optimal transformation analysis separately(OPTAS)is applied to the synthesized signal forms with conic alternatives,dualization,and smoothing.Simulation results demonstrate that the superiorities of the proposed methods achieve the optimal recovery and separation more rapidly and accurately than conventional methods. | WANG Guisheng WANG Yequn DONG Shufu HUANG Guoce | 2022 | Journal of Systems Engineering and Electronics2022，33，5： | 0 |
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