103 search results - page 10 / 21 » Optimal relay assignment for cooperative communications |
ICC
2009
IEEE
14 years 2 months ago
2009
IEEE
—In this paper we propose a new low feedback and low complexity scheme that adjusts the phases at the relays, thus allowing for the coherent combining of signals from multiple re...
JSAC
2007
13 years 7 months ago
2007
— Extending lifetime of battery-operated devices is a key design issue that allows uninterrupted information exchange among distributed nodes in wireless networks. Cooperative co...
ICC
2007
IEEE
14 years 2 months ago
2007
IEEE
Abstract—This paper considers a broadband cellular orthogonal frequency-division multiple-access (OFDMA) system with relay nodes operating in decode-and-forward and half-duplex m...
ICC
2007
IEEE
14 years 2 months ago
2007
IEEE
Abstract— Cooperation is increasingly regarded as a key technology for tackling the challenges of a practical implementation of cognitive radio. In this paper, we first give a b...
GLOBECOM
2008
IEEE
13 years 8 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...