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.
In cooperative communication single antenna mobiles can share their antennas to improve communication links and increase channel capacity. Node cooperation generates a virtual multiple-antenna system which attains close to optimal multiple input multiple output (MIMO) gains. At the same time, power line communication (PLC) offers stable high data rate for indoor communications, and also benefits from...
Multiple-input multiple-output (MIMO) systems exploit transmit diversity to combat the effect of fading channels. Recently, a new paradigm known as cooperative communication was proposed that achieves the same transmit diversity as the MIMO system. However unlikely MIMO system which requires multiple antennas, cooperative communications use the scheme of sharing single antenna to generate a virtual...
We consider packet transmission policies in the cross-layer perspective that minimize the average power consumed by the transmitter under the average delay constraints. We present a simple packet scheduling policy which is influenced by both the queue and the channel state and that can be utilized to trade-off characteristic between queueing delay and transmission power policy. The near-optimal scheduler...
After a description of the basic concepts, a model of a parallel computer is formulated. The main results about complexity of parallel algorithms for the calculation of linear recurrence relations are described. Constant speed-up for the nonlinear case is also mentioned. The parallel algorithms for a system of linear equations with a tridiagonal, triangular and full matrix are discussed. The...
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.