研究テーマ:光TDM信号を用いた光ファイバ無線分散アンテナシステムにおけるMIMO信号歪補償の検討

担当者:木谷 竜也   


研究概要

   Radio on Fiber-Distributed Antenna System (RoF-DAS) with optical Time Division Multiplexing (TDM) is known to improve coverage and wireless performance. This system uses switcher to demultiplex TDM signal for Multiple Input Multiple Output (MIMO) and switches are required to synchronize completely. If synchronization mismatch happens, it cause critically signal degradation. We proposes asynchronous optical TDM. In this proposal, synchronization mismatch is compensated by estimating the amount of drifting and cancel it out at the Remote Antenna Unit (RAU). The bit error ratio (BER) performance is evaluated by using computer simulation.



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