297 search results - page 4 / 60 » Cooperative communications protocol for multiuser OFDM netwo... |
ICC
2007
IEEE
15 years 4 months ago
2007
IEEE
— In multiuser systems, multiuser diversity gains can be achieved by assigning channels to users with higher channel quality. To avoid the extensive information exchange required...
59
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GLOBECOM
2008
IEEE
15 years 4 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....
108
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IJSNET
2010
14 years 4 months ago
2010
: Cooperative communications have been demonstrated to be effective in combating the multiple fading effects in wireless networks, and improving the network performance in terms of...
GLOBECOM
2009
IEEE
15 years 1 months ago
2009
IEEE
We study the joint allocation of three types of resources, namely, power, subcarriers and relay nodes, in cooperative two-hop multi-relay OFDM systems. Each relay adopts the amplif...
ICC
2007
IEEE
15 years 4 months ago
2007
IEEE
Abstract— In wireless cellular systems, capacity can be increased if both in-cell and out-of-cell cochannel interference (CCI) is properly handled. Moreover, spatial multiplexing...