An Efficient Carrier Phase Synchronization Technique for High-Order M-QAM-OFDM

In this correspondence, we propose a blind carrier phase synchronization algorithm for high-order M-ary quadrature amplitude modulation-orthogonal frequency division multiplexing (M-QAM-OFDM) systems, which can effectively recover residual frequency offset (RFO) in the presence of intercarrier inter...

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Bibliographic Details
Published in:IEEE transactions on signal processing 2008-08, Vol.56 (8), p.3789-3794
Main Authors: Kim, K.Y., Zou, Q., Choi, H.J., Sayed, A.H.
Format: Article
Language:English
Subjects:
Amplitude modulation
Applied sciences
Bit error rate
Degradation
Exact sciences and technology
Frequency division multiplexing
Frequency modulation
Frequency synchronization
Information, signal and communications theory
Intercarrier interference (ICI)
Interference
M-ary quadrature amplitude modulation-orthogonal frequency division multiplexing (M-QAM-OFDM)
Miscellaneous
Modulation, demodulation
Multiplexing
OFDM modulation
Phase modulation
phase noise
Quadrature amplitude modulation
residual frequency offset (RFO)
Signal and communications theory
Signal processing
synchronization
Telecommunications and information theory
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Summary:In this correspondence, we propose a blind carrier phase synchronization algorithm for high-order M-ary quadrature amplitude modulation-orthogonal frequency division multiplexing (M-QAM-OFDM) systems, which can effectively recover residual frequency offset (RFO) in the presence of intercarrier interference (ICI). The proposed algorithm performs frequency and phase synchronization by using post-fast Fourier transform (FFT) demodulated signals without the aid of reference signals (e.g., pilots, guard intervals, and virtual carriers), and is simple to implement. By analyzing its open-loop characteristics, we show that the proposed algorithm is superior to the conventional decision-directed (DD) scheme for high-order M-QAM-OFDM systems.
ISSN:1053-587X
1941-0476
DOI:10.1109/TSP.2008.920500