Coexistence of OFDM-Based IMT-Advanced and FM Broadcasting Systems

ETRI Journal

关键词: interference power;    FM broadcasting;    power spectral density analysis;    IMT-Advanced systems;    Sharing analysis;   

Others  :  1186144
DOI  :  10.4218/etrij.11.0210.0211

【 摘 要 】

Coexistence analysis is extremely important in examining the possibility for spectrum sharing between orthogonal frequency-division multiplexing (OFDM)-based international mobile telecommunications (IMT)-Advanced and other wireless services. In this letter, a new closed form method is derived based on power spectral density analysis in order to analyze the coexistence of OFDM-based IMT-Advanced systems and broadcasting frequency modulation (FM) systems. The proposed method evaluates more exact interference power of IMT-Advanced systems in FM broadcasting systems than the advanced minimum coupling loss (A-MCL) method. Numerical results show that the interference power is 1.3 dB and 3 dB less than that obtained using the A-MCL method at cochannel and adjacent channel, respectively. This reduces the minimum separation distance between the two systems, which eventually saves spectrum resources.

   

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