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 cognitive radios, there exist two kinds of detection errors: missed-detection errors and false-alarm errors. These errors severely degrade sensing performance. In this paper, we aim to minimize the total detection probability by considering it as a target function for the optimization of sensing parameters in a Rayleigh fading environment. With this established target function, we perform a discrete...
In this paper, we investigate threshold-based dual-hop relaying schemes in conjunction with partial relay selection in terms of outage probability and bit error probability. The best relay chosen by partial relay selection will transmit jointly with the source using either amplify-and-forward (AF) or decode-and-forward (DF) if the received signal-to-noise ratio (SNR) exceeds a given threshold; otherwise,...
This paper provides a complete study on the end-to-end performance of multi-hop wireless communication systems equipped with re-generative (decode-and-forward) relays over Rayleigh fading channels assuming single-antenna terminals. More specifically, the probability density function (pdf) of the tightly approximated end-to-end SNR of the systems is derived. Using this approximation allows us to avoid...
Cooperative communications among the users in the multiple access wireless environments is an efficient way to obtain the powerful benefits of multi-antenna system without the demand for physical arrays. This paper proposes a solution to optimize the weights of partnering user's signal for the minimum error probability at the output of maximum likelihood (ML) detector. Found weights adapt the propagation...
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.