The high peak-to-average power ratio (PAPR) is one of the main disadvantages of OFDM systems, which reduces the transmission efficiency with non-linear pow...

• Ian Alves Ulian
• André Noll Barreto

• OFDM
• PAPR
• non-linear power amplifier
• total degradation
• channel coding

SBrT 2010

Linear precoding can be applied to multicarrier systems to minimize the effect that a deep fade in one of the subchannels can have on the overall bit error...

• Bruno S. Chang
• Carlos A. F. da Rocha
• Didier Le Ruyet
• Daniel Roviras

SBrT 2010

Recently a new technique that used parametric amplification in optical fibers to combine two binary signals into a single quaternary amplitude-shift keyin...

• A. L. A. Costa
• J. D. Marconi
• F. R. Barbosa
• E. Moschim
• M. L. F. Abbade

• Optical signal processing
• parametric amplifiers (PA)
• quaternary-amplitude shift keying (4 - ASK)

SBrT 2010

In this paper, we propose an optimal Joint Call Admission Control (JCAC) in next generation wireless networks, where different radio access technologies (R...

• Rodolfo W. L. Coutinho
• Vitor L. Coelho
• Joao C. W. A. Costa
• Glaucio H. S. Carvalho

SBrT 2010

The use of array beamforming in modern wireless communication systems has been increasingly investigated, due to their potential in rejecting interference ...

• Adilson Chinatto
• Cynthia Junqueira
• João M. T. Romano

• widely linear processing
• blind algorithms
• CMA
• NCMA
• beamforming

SBrT 2010