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Orthogonal frequency division multiplexing (OFDM) signals widely applied in digital wireless communication systems inevitably suffers from the distortion caused by high power amplifier (HPA) exhibiting output saturation characteristics. In this paper, kernel adaptive filtering is designed as the predistorter for separately compensating the nonlinearity of output amplitude and phase resulting in adjacent...
Partial FFT demodulation is a newly-emerging technique to mitigate the inter-carrier interference (ICI) of orthogonal frequency division multiplexing (OFDM) systems over time-varying underwater acoustic channels. In this letter, we extend the partial FFT demodulation method for a single-input single-output (SISO) configuration to the multiple-input multiple-output (MIMO) case. By assuming no channel...
Orthogonal Frequency Division Multiplexing (OFDM) as a leading technology in 4G wireless communication shows great robustness against multipath spread, because the orthogonal subcarriers transform the frequencyselectivewideband channel into parallel flat fading narrowband sub-channels. This advantage has arose great interest into underwater OFDM transmission, since multipath spread is a significant...
High speed forms of transportation as airplane, maglev, and low-earth-orbit satellite, arising great demand of high dynamic communication, which reveals the insufficiency of channel estimation without reliable doppler compensation. This paper proposes to use energy sorting to eliminate small component in time domain channel estimation, and adopt doppler shift to further revised the channel parameter...
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