476 search results - page 29 / 96 » The Relay Channel with a Wire-tapper |
TCOM
2008
14 years 9 months ago
2008
Distributed space-time coding is a cooperative transmission scheme proposed for wireless relay networks. With this scheme, antennas of the distributive relays work as transmit ante...
70
Voted
GLOBECOM
2008
IEEE
14 years 10 months ago
2008
IEEE
Abstract— This paper discusses channel estimation in a cooperative orthogonal frequency-division multiplexing (OFDM) network in the presence of frequency offsets. Both the amplif...
JSAC
2011
14 years 4 months ago
2011
—In this paper, opportunistic multiple access to the under-utilized channel resources is investigated. Exploiting source burstiness, secondary cognitive nodes utilizes primary no...
71
Voted
ICC
2007
IEEE
15 years 4 months ago
2007
IEEE
— In this paper, we consider a 2-hop wireless diversity relay network. We explore transmit power allocation among the source and relays to maximize the received signal to noise r...
98
Voted
GLOBECOM
2007
IEEE
15 years 1 months ago
2007
IEEE
We propose a spectrally efficient transmission scheme for the half-duplex relay channel. In the proposed scheme, the relay combines N detected r-dimensional symbols and generates M...