2010 - VII International Telecommunications Symposium
Optical Amplitude Multiplexing through Parametric Amplification: An Analysis for the Idler Signal
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
Evaluation of the Effects of the Co-Channel Interference on the Bit Error Rate of Cellular Systems for BPSK Modulation
A performance analysis in terms of the bit error rate for digital systems with co-channel interference is done. In order to evaluate the effects of the int...
- Daniel Altamirano
- Celso de Almeida
- 2-PAM
- BPSK
- Co-Channel Interference
- SIR
- BER
SBrT 2010
Implementation of PKIX-P2P with trust-based reputation using the JXTA platform
Nowadays, implement security in P2P systems is a great challenge. The possibility of building an infrastructure of public keys (PKI) operating in P2P envi...
- Francisco Sales de Lima Filho
- Sergio Vianna Fialho
- P2P
- PKI
- PKIX
- Trust-based reputation
- Information Security
- Digital certification
- JXTA
SBrT 2010
Evaluation of the Effects of Co-Channel Interference on the Bit Error Rate for QPSK and M-QAM Modulations
In this paper, a performance analysis for QPSK, 16- QAM and 64-QAM, modulations in the presence of co-channel interference is made. At first, an expression...
- Edgar Benítez
- Gina Quelal
- Diana Moya
- Daniel Altamirano
- Celso de Almeida
- M-PAM
- Q-PSK
- M-QAM
- Co-Channel Interference
- SIR
- BER
SBrT 2010
Hyperbolic lattices: a new propose for space time coding theory
In the context of space-time block codes (STBCs), the theory of hyperbolic lattices over totally real number field is presented, as well as theoretic crit...
- Edson Donizete de Carvalho
- Antonio Aparecido de Andrade
SBrT 2010