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In this paper, we propose a novel receiver consists of the Inter Symbol Interference (ISI) canceller and the turbo equalizer for orthogonal frequency division multiplexing (OFDM) systems over frequency selective fading channels where the multipath delay exceeds the guard interval duration. The proposed turbo equalization algorithm performs soft Inter Carrier Interference (ICI) cancellation and frequency...
We apply LDPC codes for turbo inter-carrier interference (ICI) cancellation (channel detecting) and decoding in OFDM systems due to mobility of channels. The simulation result shows that the proposed turbo ICI cancellation and sum-product algorithm decoding of LDPC coded OFDM systems can achieve the better error rate performance than turbo ICI cancellation and BCJR decoding of convolutional coded...
This paper proposes a novel blind time-offset (TO) estimation scheme for orthogonal frequency division multiplexing (OFDM) systems. Based on the observation that a TO almost surely gives rise to interblock interference (IBI), the proposed TO estimation is accomplished by minimizing the EBI. Borrowing the idea of differential decoding, the need of channel state information is circumvented via joint...
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