INVESTIGADORES
GREGORIO Fernando Hugo
congresos y reuniones científicas
Título:
Sequential compensation of RF impairments in OFDM systems
Autor/es:
FERNANDO GREGORIO, JUAN COUSSEAU ,STEFAN WERNER, RISTO WICHMAN; STEFAN WERNER, RISTO WICHMAN, TANELI RIIHONEN
Lugar:
Sydney, Australia
Reunión:
Conferencia; IEEE Wireless Communications and Networking Conference; 2010
Institución organizadora:
IEEE Communications Society.
Resumen:
Direct-conversion OFDM transceivers are seriously
affected by front-end distortions like IQ imbalance and phase
noise. Moreover, OFDM systems are sensitive to nonlinear
distortions in power amplifiers and A/D converters, and to
carrier frequency offset (CFO). We present a novel baseband
compensation technique that combats these principal impairments
in OFDM systems. Unlike compensation scheme that
target a subset of impairments, our method jointly mitigates
the effects of IQ imbalance, phase noise, carrier frequency offset
and nonlinear distortion. Simulations of the proposed scheme
with large levels of CFO, IQ imbalance and phase noise show an
excellent performance in terms of bit error rate.
Index Terms?RF impairments, baseband DSP compensation
method
?RF impairments, baseband DSP compensation
method