72 search results - page 13 / 15 » Spectrally efficient noncoherent communication |
TWC
2008
14 years 9 months ago
2008
Abstract--Wireless infrastructures can be conveniently categorized into two types: those that provide point-to-point `unicast' connectivity (e.g., cellular) and others that ar...
VTC
2007
IEEE
15 years 3 months ago
2007
IEEE
Abstract - A coherent detection of OFDM signals (Orthogonal Frequency Division Multiplexing) allows good performances in severely time-dispersive channels. However, coherent receiv...
GLOBECOM
2006
IEEE
15 years 3 months ago
2006
IEEE
—Design of space-time codes that scale with the number of transmit antennas is a difficult problem. In this paper, we introduce a new family of space-time trellis codes (STTC) th...
ICASSP
2009
IEEE
15 years 4 months ago
2009
IEEE
—Spectrum access is an important function of cognitive radios for detecting and utilizing spectrum holes without harming the legacy systems. In this paper, we propose novel coope...
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ICC
2007
IEEE
15 years 1 months ago
2007
IEEE
Cooperative transmission by base stations can significantly improve the spectral efficiency of multiuser, multi-cell multiple input multiple output systems. We show that in such s...