The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
A novel adaptive Rake-MMSE receiver for DS-UWB systems in the presence of both multi-path interference and narrowband interference is proposed. The receiver firstly adopts Rake reception to separate and extract multi-path components, and then uses MMSE method to combine multi-path components for eliminating narrowband interference. In combining schemes, an adaptive RLS algorithm is adopted to reduce...
In order to effectively solve the problem of rub, prang on the parking vehicles and confirm the wreckers, vehicle-mounted burglary-resisting system based on ARM and 3G is designed in this paper. The system monitors the anomalie of vehicles by sensors, once abnormal data is monitored, the camera is launched and then shoots pictures around vehicles. Then those pictures are stored in SD card so as to...
Inter symbol interference (ISI) due to the dense multi-path nature of the UWB channel results in large performance degradation, the Rake receiver can effectively overcome the ISI problems, in this paper, the analytical BER expression for the UWB system using the Rake receiver in the multi-path channel is derived. Furthermore, the performance of A-Rake, P-Rake and S-Rake is evaluated for TH-UWB system...
Firstly, this paper gives a simple introduction of the encoding/decoding theory of LDPC and Space-time coding. And it carries out a detailed research and analysis on LDPC coding system and the space-time block coding system. Then, LDPC and space-time coding are combined. The performance of LDPC-STBC under AWGN channel is given through computer simulation. The simulation results show that this method...
To realize the breakthrough on underground coal mine rescue technology, studied one based on RFID personnel orientation rescuing system. The system is composed of transmitter and receiver. The miner carries a transmitter, once accident happens, the succor use the receiver to communicate with the transmitter at UHF band, and judging the direction where the miner is by observing the received signal...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.