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Transmitting and receiving device and method for continuous outer-loop power control while in DTX mode in a CDMA mobile communication system

A device and method for continuous outer-loop power control on a physical channel which transmits only power control bits and no data while in discontinuous transmission (DTX) mode in a CDMA mobile communication system is disclosed. In the power controlling device according to one aspect of the present invention, a frame error detector detects an error from a frame of predetermined length and generates an error signal indicating whether an error has been generated. A closed-loop power controller compares a threshold with the signal-to-noise ratio (SNR) in each power control group (PCG) in a plurality of periods of the frame and generates power control information according to the comparison result. An outer-loop power controller increases the threshold in order to generate power control information that commands a power increase in response to an error signal indicating the existence of a frame error, and decreases the threshold in order to generate power control information that commands a power decrease in response to an error signal indicating the absence of a frame error. An offset controlling unit, which is connected to the outer-loop power controller, receives gating information about the gated transmission of data in a frame at a predetermined rate, and generates an offset signal, which indicates an offset corresponding to a changed gating rate if the gating rate is changed.
Owner:SAMSUNG ELECTRONICS CO LTD

Indoor multi unmanned aerial vehicle formation flight simulation verification platform and achieving method thereof

The invention relates to the technical field of multi unmanned aerial vehicle formation control, for achieving a demonstration platform for multi unmanned aerial vehicle formation flying at the same time on the basis of the simulation verification, and for a more visual display of the control effect of the multi unmanned aerial vehicle formation. The technical scheme is the achieving method of the indoor multi unmanned aerial vehicle formation flight simulation verification, the steps are, firstly utilizing an indoor positioning system through calibration to construct an indoor xyz three-dimensional coordinate system, utilizing a high speed infrared camera and according to marked points stuck on each unmanned aerial vehicle, capturing in real time and conducting pretreatments, transmitting to a ground based computer borrowing the help from a switch board; utilizing the ground based computer to conduct treatments to the data transmitted from camera, real time solving and calculating the current position of each unmanned aerial vehicle, and packing and transmitting to a ground based station through a TCP / IP agreement; adopting and borrowing the assistance from the ground based station of a ROS inter process communication mechanism, to finally achieve the simulation verification of multi unmanned aerial vehicle formation flight. The simulation verification platform is mainly applied for situations like multi unmanned aerial vehicle formation simulation verifications.
Owner:TIANJIN UNIV

Portable remote health monitoring system and implementation method thereof

The invention belongs to the field of electronic medical instruments, and discloses a portable remote health monitoring system and an implementation method. The system comprises a portable remote monitor and a monitoring center server of a medical monitoring center. The portable remote monitor can monitor basic physiological parameters of a user, can judge whether the user falls over, and has wireless communication and geo-location functions; monitoring results are uploaded to the monitoring center server through a GPRS (general packet radio service) or CDMA (code division multiple access) wireless network and an Internet network, or are sent to a preset mobile phone number in a massage manner; the monitoring center server and a monitoring center PC terminal perform data communication through a local area network, and a medical worker of the monitoring center can monitor the health condition of the user; and a user family PC terminal accesses the monitoring center server and checks the physiological parameters and geographical location information of the user through the Internet network, so that the user can be remotely monitored, and requirements for family telemedicine and first aids are met.
Owner:中国科学院沈阳计算技术研究所有限公司
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