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.
We demonstrate a novel fiber-based spectral-domain interferometry (SDI) technique for terahertz electric field measurement. Signal-to-noise ratio is enhanced by more than four folds while the scanning window is extended to >30 picoseconds compared to conventional SDI techniques.
We demonstrate self-referenced spectral-domain interferometry (SDI) for terahertz detection. It not only overcomes the limitation of over-rotation for intense terahertz fields, but also considerably increases the signal-to-noise ratio, when compared with conventional SDI techniques.
Frequency offset estimation is an important issue in digital transceiver design, especially for coherent wireless transmission such as in WiMAX systems based on the IEEE 802.16e orthogonal frequency-division multiple access (OFDMA). The downlink synchronization, in WiMAX systems, involves synchronization of carrier frequency and timing as well as identification of the preamble index. This paper introduces...
We propose to use joint power and rate control to increase spatial reuse in multi-AP WLANs. An original solution to the problem of learning the necessary characteristics of on-going transmissions is proposed. This consists of an in-channel signalling scheme that identifies the transmitter and conveys its power and rate without the addition of any capacity overhead. We demonstrate by simulation that...
In wireless networks, reducing aggregate transmit power and in many cases, having even power distribution increase the network lifetime. Conventional direct transmission (DTX) scheme results in high aggregate transmit power and uneven power distribution. In this paper, we consider location-aware cooperation-based schemes namely immediate-neighbor cooperation (INC), maximal cooperation (MAX), and wireless...
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.