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Two-level modulation scheme to reduce latency for optical mobile fronthaul networks

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Academic year: 2021

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Figure 1 shows the evolution of the wireless access networks, and Fig. 1(a) illustrates the  traditional 2G system in which the BS is located close to the antenna to reduce the  propagation loss of the RF signal in the electrical cable between the BS and t
Fig. 2. Encoder and decoder of two-level OFDM-ASK. (a) The encoder in the BBU. (b) The  decoder in the UE
Fig. 3. Proof-of-concept experimental setup with Inset (i) to (ix): corresponding optical  spectrum at different ports
Fig. 5. Signal performance versus received power at RRH. (a) Control signal. (b) Wireless  payload signal

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