| Abstract: |
Orthogonal Frequency Division Multiplexing (OFDM) is a promising
transmission
format for high-speed data communications due to its robust performance
over
frequency-selective fading channels and its spectral efficiency.
Multi-carrier signals
have high peak to average power ratios (PARs), which pose a challenge
for the
(nonlinear) power amplifiers present in most transmission systems. In
this talk,
we will examine a few solutions to enhance the power efficiency of
multicarrier
transmission systems, (i) PAR reduction, (ii) joint PAR reduction and
predistortion
linearization of the PA, and (iii) joint channel estimation and PAR
reduction.
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| Biography: |
Ning Chen spent 7 years at Shanghai Jiao Tong University (SJTU) in
Shanghai,
China, where he earned his B.S. degree in EE and another B.S. degree in
Accounting
in 1997. He worked as an instructor at SJTU until August 2000. He
received his M.S. in
EE from the New Mexico State University in December 2001. Since then,
he has been
working on his Ph.D. degree in CSIP under the guidance of Prof. G. Tong
Zhou.
His research interests are in investigating the various (particularly
nonlinear) distortions in
communications systems.
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