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Performance of OFDM System under Narrow-band Interference

Xuejun Sha

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Abstract

Nowadays,for the non-authorized frequency band of 2.4GHz is becoming busier and busier,the WLAN system under this frequency band would be affected easily by the narrow-band interference.Aiming at this condition;this paper focuses on the performance of OFDM system under the narrow-band interference.Theoretical analysis and simulation indicate that the performance of OFDM communication system would rapidly descend under the serious narrow-band interference,and this problem is particularly obvious when central frequency of the interference is not the integer times of the OFDM basic frequency.Therefore,some measures must be taken to guarantee normal work of the system under serious interference.

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What this paper is about

Nowadays,for the non-authorized frequency band of 2.4GHz is becoming busier and busier,the WLAN system under this frequency band would be affected easily by the narrow-band interference.Aiming at this condition;this paper focuses on the performance of OFDM system under the narrow-band interference.Theoretical analysis and simulation indicate that the performance of OFDM communication system would rapidly descend under the serious narrow-band interference,and this problem is particularly obvious when central frequency of the interference is not the integer times of the OFDM basic frequency.Therefore,some measures must be taken to guarantee normal work of the system under serious interference.

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Available abstract

Nowadays,for the non-authorized frequency band of 2.4GHz is becoming busier and busier,the WLAN system under this frequency band would be affected easily by the narrow-band interference.Aiming at this condition;this paper focuses on the performance of OFDM system under the narrow-band interference.Theoretical analysis and simulation indicate that the performance of OFDM communication system would rapidly descend under the serious narrow-band interference,and this problem is particularly obvious when central frequency of the interference is not the integer times of the OFDM basic frequency.Therefore,some measures must be taken to guarantee normal work of the system under serious interference.

Key concepts: Interference (communication), Orthogonal frequency-division multiplexing, Computer science, Frequency band, Electronic engineering, Telecommunications, Adjacent-channel interference, Radio spectrum

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