5 search results - page 1 / 1 » The Signaling Overhead in Dynamic OFDMA Systems: Reduction b... |
ICC
2007
IEEE
13 years 11 months ago
2007
IEEE
Abstract— Dynamic OFDMA systems provide a significant performance gain compared to static OFDM approaches. In reality this gain is reduced by an overhead due to signaling. Previ...
GI
2005
Springer
13 years 10 months ago
2005
Springer
: It is well known that dynamic OFDMA systems potentially increase the spectral efficiency of wireless systems. They exploit diversity effects in time, space, and frequency by ass...
GLOBECOM
2006
IEEE
13 years 11 months ago
2006
IEEE
Abstract— In this paper, we propose a distributed opportunistic access scheme for uplink OFDMA systems. The sub-carriers are grouped into several sub-channels. Users access these...
ICIP
2003
IEEE
14 years 6 months ago
2003
IEEE
For motion estimation (ME) and discrete cosine transform (DCT) of MPEG video encoding, content variation and perceptual tolerance in video signals can be exploited to gracefully t...
TCOM
2008
13 years 4 months ago
2008
Abstract--We investigate a new approach to uplink communications in wideband outdoor cellular systems that can take advantage of multiple antennas at the base station in a scalable...