Xinyue Guo, Xin Li. Experimental demonstration of an adaptive orthogonal frequency division multiplexing visible light communication system[J]. Chinese Optics Letters, 2016, 14(11): 110604
- Chinese Optics Letters
- Vol. 14, Issue 11, 110604 (2016)
Fig. 1. Block diagram of the proposed adaptive OFDM VLC system (TX: transmitter; RX: receiver).
Fig. 2. Experimental setup for the proposed system.
Fig. 3. Normalized amplitude frequency response of the equivalent channel.
Fig. 4. Measured electrical spectra of the received signals for the (a) 25 MHz case, (b) 12.5 MHz case, and (c) 6.25 MHz case.
Fig. 5. SNR and power allocated results for the (a) 25 MHz case, (b) 12.5 MHz case, and (c) 6.25 MHz case.
Fig. 6. Bits allocated results (BER T = 0.001
Fig. 7. BER versus spectrum efficiency with and without an adaptive transmission scheme for the (a) 25 MHz case, (b) 12.5 MHz case, and (c) 6.25 MHz case.
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Table 1. Determination of Modulation Orders
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Table 2. Parameter Configuration
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