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A unipolar orthogonal frequency division multi-plexing (OFDM) technique called flipped OFDM (Flip-OFDM), is suitable for intensity modulation and direct detection (IM/DD) channel which needs the transmitted signal to be real and positive. Flip-OFDM uses two consecutive OFDM subframes to transmit the positive and negative parts of the signal, respectively. In the conventional receiver, only the difference...
This paper proposes an optimal receive algorithm for asymmetrically clipped optical OFDM (ACO-OFDM) based optical wireless communication systems with intensity modulation and direct detection (IM/DD). Conventional ACO-OFDM system only employs the information of odd subcarriers, and the information on even subcarriers is discarded. This paper presents a novel ACO-OFDM receiver, which exploits the anti-periodic...
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