Study on OFDM-RoF Downlink
Study on OFDM-RoF Downlink
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发表时间：
2010
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通讯作者：
Yang Chunyong
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作者：
Yang Chunyong
The integration of Orthogonal Frequency Division Multiplexing(OFDM) with Radio over Fiber(RoF) technique provides the possibility of cost-effective and high data-rate wireless networks.However,the nonlinear effects and multipath fading of wireless channel could severely degrade the performance of RoF as well as OFDM system.In this paper,based on the transfer function model of the ROF downlink,the performance of OFDM based ROF link is analyzed.And this transfer model includes the laser diode,single mode fiber and wireless channel.The error vector,third-order nonlinear distortion and intermodulation distortion of the received signal under different modulator index,fiber length and multipath wireless channel are discussed.Simulation results show that the performance of received OFDM signals would decrease with the increase of modulator index and fiber length as well as the multipath fading of wireless channel.These discussions and analyses provide a theoretical basis for linear and equalization algorithm of OFDM-ROF downlink.
