197 search results - page 26 / 40 » A cheap relaying protocol for orthogonal relay channels |
TWC
2008
13 years 7 months ago
2008
In order to adapt to time-varying wireless channels, various channel-adaptive schemes have been proposed to exploit inherent spatial diversity in mobile/wireless ad hoc networks w...
SECON
2007
IEEE
14 years 2 months ago
2007
IEEE
— Multiuser diversity is a phenomenon caused by channel variations among different users in a wireless network. Cooperative relaying provides another form of diversity due to the...
SECRYPT
2008
13 years 9 months ago
2008
Distance-bounding protocols have been proposed by Brands and Chaum in 1993 in order to detect relay attacks, also known as mafia fraud. Although the idea has been introduced fiftee...
GLOBECOM
2010
IEEE
13 years 5 months ago
2010
IEEE
In this paper we analyze the performance of a distributed queuing medium access control (MAC) protocol designed to execute cooperative ARQ (C-ARQ) schemes at the MAC layer. Due to ...
GLOBECOM
2008
IEEE
14 years 2 months ago
2008
IEEE
Abstract—In this paper, we investigate cooperative OFDM communications using amplify-and-forward (AF) protocol at the relays, in the presence of imperfect timing synchronization....