Zobrazeno 1 - 10
of 328
pro vyhledávání: '"ZHU Hong-bo"'
Autor:
ZHANG Jing, ZHU Hong-bo
Publikováno v:
Tongxin xuebao, Vol 31, Pp 188-194 (2010)
Aiming at the opportunistic spectrum access（OSA） system with periodic channel sensing,sensing activity of secondary users was modeled and analyzed with Markov process.Combining physical layer index with MAC layer index,a cross-layer performance m
Externí odkaz:
https://doaj.org/article/6164c5b5567c4db0a40e60d21c541a19
Publikováno v:
Tongxin xuebao, Vol 31, Pp 2-9 (2010)
On the basis of integrated analysis of basic concept and key techniques of internet of things（IOT）,a core idea of IOT,"the multifield combined share and ubiquitous integrated service",was put forward;a technical system framework of smart multifun
Externí odkaz:
https://doaj.org/article/fded2d742fb84ce8a65e3184f3b83281
Autor:
LV Wen-jun, ZHU Hong-bo
Publikováno v:
Tongxin xuebao, Vol 31, Pp 101-106 (2010)
Design concept of a novel balanced multi-band tag antenna for Internet of things sensors applications was proposed.The antenna has a symmetrical structure so that it can be easily and directly integrated with differential driving RF front ends.The an
Externí odkaz:
https://doaj.org/article/0f87bc7e93e44d4ba17b67e1e12218ec
Autor:
LV Wen-jun, ZHU Hong-bo
Publikováno v:
Tongxin xuebao, Vol 31, Pp 76-80 (2010)
Design of a novel ultra-wideband folded loop antenna was proposed.It was fed by coplanar waveguide and can be easily integrated with other microwave circuits.By introducing a pentagonal folded loop,the bandwidth of the an-tenna is improved twice than
Externí odkaz:
https://doaj.org/article/fb9345234b2a409b9c4b52c9a08602f4
Publikováno v:
Tongxin xuebao, Pp 77-82 (2008)
An iterative channel estimation algorithm and receiver structures based on Turbo principle were proposed for estimating channel parameters in a TH-UWB system under the realistic UWB channel model from IEEE 802.15. In each iteration, the soft-output o
Externí odkaz:
https://doaj.org/article/199bfeab38dd444b83ecbd636e0b2712
Autor:
HU Luo-quan, ZHU Hong-bo
Publikováno v:
Tongxin xuebao, Pp 27-34 (2006)
According to the propagation properties of electromagnetic wave in wireless channels, correlated time series generated by stochastic bridge processes were proposed. The basic random variables with special probability density functions constructed fro
Externí odkaz:
https://doaj.org/article/8e025cb8cd98487ab2cf9b096da5435c
Autor:
HU Luo-quan, ZHU Hong-bo
Publikováno v:
Tongxin xuebao, Pp 143-148 (2005)
Methods of optimization were proposed for analyzing the properties of UWB indoor multipath channels,and a mathematical model for UWB channel modeling was discussed.Assumptions of stochastic bridge process and probabilistic choice were adopted.A UWB c
Externí odkaz:
https://doaj.org/article/d2003e5315a849f0952b5e4020209dd6
Autor:
LU Yin, ZHU Hong-bo
Publikováno v:
Tongxin xuebao, Pp 60-64 (2005)
Coexistence and compatibility was an important issue needed to be considered in ultra-wideband （UWB） impulse radio communications.To avoid interference,one of the effective methods was to design appropriate pulse waveform.UWB pulse design algorit
Externí odkaz:
https://doaj.org/article/9c4af9d1822c47509a06740b57e1adcd
Publikováno v:
Tongxin xuebao, Pp 65-68 (2005)
A novel meandered-loop ultra-wideband antenna was proposed.The antenna was similar in configuration with a conventional wide-slot antenna,however,by employing meandered-loop structure,not only ultra-wideband performance but also compact size could be
Externí odkaz:
https://doaj.org/article/061d86f5303445c8bdd47a98158d2a1a
Autor:
WANG Yi-ming, ZHU Hong-bo
Publikováno v:
Tongxin xuebao, Pp 13-18 (2005)
A new adaptive equalization technology aiming at the intersymbol and interuser interferences in the multiuser UWB channels was presented specially for DS-UWB/TH-UWB receivers.Its computational complexity and convergence rate were compared with the tr
Externí odkaz:
https://doaj.org/article/b34436a565c248b79a6740c1c15b1b74