Efficient DMT/OFDM transmission with insufficient cyclic prefix |
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Authors: | Cheol-Jin Park Gi-Hong Im |
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Affiliation: | Dept. of Electron. & Electr. Eng., Pohang Univ. of Sci. & Technol., South Korea; |
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Abstract: | In this letter, we describe a new method to eliminate intersymbol interference (ISI) and interchannel interference (ICI) for discrete multitone/orthogonal frequency division multiplexing (DMT/OFDM) systems with insufficient cyclic prefix (CP). The proposed structure prevents ICI with a preprocessing method that utilizes redundancy in the frequency domain at the transmitter and removes ISI with a simple cancellation method at the receiver. Analytical and simulation results show that the proposed method can reduce computational complexity, while providing the same spectral efficiency as the frequency-domain equalizer (Trautmann and Fleige, 2002), which utilizes redundancy in the frequency domain at the receiver, in the presence of additive white Gaussian noise. |
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