Zobrazeno 1 - 10
of 278
pro vyhledávání: '"Seong Ro Lee"'
Publikováno v:
International Journal of Distributed Sensor Networks, Vol 11 (2015)
In this paper, an adaptive speech streaming method is proposed to improve the perceived speech quality (PSQ) of voice over wireless multimedia sensor network (WMSNs). First of all, the proposed method estimates the PSQ of the received speech data und
Externí odkaz:
https://doaj.org/article/34aad6869037410eb268b6fdcbb84e8c
Publikováno v:
International Journal of Distributed Sensor Networks, Vol 10 (2014)
A packet loss concealment (PLC) algorithm is proposed to improve the quality of decoded speech when packet losses occur in a wireless sensor network. The proposed algorithm is mainly based on artificial bandwidth extension (ABE) from narrowband to wi
Externí odkaz:
https://doaj.org/article/1be5583ab11e4c2fa484a30828ed8864
Publikováno v:
International Journal of Antennas and Propagation, Vol 2014 (2014)
The growth of wireless communications in recent years has made it necessary to develop compact, lightweight multiband antennas. Compact antennas can achieve the same performance as large antennas do with low price and with greater system integration.
Externí odkaz:
https://doaj.org/article/aa65ee8b4c664e99852fbb49a3d63d8a
Publikováno v:
International Journal of Distributed Sensor Networks, Vol 9 (2013)
We propose a linearization method for reducing the effect of nonlinear frequency sweep in a frequency-modulated continuous-wave (FMCW) based laser range sensor. In FMCW laser range sensors, nonlinear frequency sweep can severely degrade the measureme
Externí odkaz:
https://doaj.org/article/f0b1eb05e40f4f73847c727ff0301e8a
Publikováno v:
Far East Journal of Electronics and Communications. 17:833-837
Publikováno v:
Journal of Communications and Networks. 18:375-386
Most existing studies on broadcast services in orthogonal frequency division multiplexing (OFDM) systems have focused on how to allocate the transmission power to the subcarriers. However, because a broadcasting system must guarantee quality of servi
Publikováno v:
Journal of Central South University. 23:1208-1214
Vestibulo-ocular reflex (VOR) is an important biological reflex that controls eye movement to ensure clear vision while the head is in motion. Nowadays, VOR measurement is commonly done with a video head impulse test based on a velocity gain algorith
Publikováno v:
International journal of advanced smart convergence. 5:59-65
In this paper, we’re compared network protocol which is network lifetime longer when using LEACH Protocol, SEP, and TEEN in a heterogeneous Wireless Sensor Network with a Large Sensor Area. Also, we propose a method of divided layer the wide-area s
Publikováno v:
International journal of advanced smart convergence. 5:66-72
In this paper, we proposed the clustering algorithm using fuzzy inference system for improving adaptability the cluster head selection of TEEN. The stochastic selection method cannot guarantee available of cluster head. Furthermore, because the forma
Publikováno v:
Journal of Nanoscience and Nanotechnology. 16:1822-1826
The accumulative roll-bonding (ARB) process using different copper alloys of oxygen free copper (OFC) and dioxide low-phosphorous copper (DLPC) was performed up to six cycles at ambient temperature without lubrication. A complex copper alloy sheet'in