35 search results - page 7 / 7 » Vandermonde Frequency Division Multiplexing for Cognitive Ra... |
TWC
2011
12 years 11 months ago
2011
Abstract—Regulation in Europe and Japan requires the implementation of detect-and-avoid (DAA) techniques in some bands for the coexistence of licensed primary systems and seconda...
ICC
2007
IEEE
13 years 11 months ago
2007
IEEE
Orthogonal frequency division multiplexing (OFDM) signals are very sensitive to radio frequency (RF) impairments. One of the major impairments is the mismatching errors between the...
ETT
2000
13 years 4 months ago
2000
We analyze the effects of Doppler spread in mobile channels on Orthogonal Frequency Division Multiplex (OFDM) systems. This is important, since channel variations during one OFDM s...
TWC
2010
12 years 11 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...
SIGCOMM
2009
ACM
13 years 11 months ago
2009
ACM
Network protocol designers, both at the physical and network level, have long considered interference and simultaneous transmission in wireless protocols as a problem to be avoide...