212 search results - page 37 / 43 » Rayleigh Fading Multiple Access Channel Without Channel Stat... |
ICC
2009
IEEE
14 years 1 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...
INFOCOM
2010
IEEE
13 years 5 months ago
2010
IEEE
—We venture beyond the “listen-before-talk” strategy that is common in many traditional cognitive radio access schemes. We exploit the bi-directional nature of most primary c...
VTC
2008
IEEE
14 years 1 months ago
2008
IEEE
— The demand for even higher data rates in future mobile communications systems calls for new techniques capable of improving the performance of cellular systems. One possibility...
TWC
2010
13 years 1 months ago
2010
Cooperative forwarding in wireless networks has shown to yield rate and diversity gains, but it incurs energy costs borne by the cooperating nodes. In this paper we consider an inc...
ICC
2007
IEEE
14 years 1 months ago
2007
IEEE
Abstract— Adaptive transmission techniques including transmit beamforming, precoding, and opportunistic scheduling offer high spectral efficiency when channel state information ...