A Minimum Value Based Threshold Setting Strategy for Frequency Domain Interference Excision

作者：Wang Shuai^*; An Jian Ping; Wang Ai hua; Bu Xiang yuan

来源：IEEE Signal Processing Letters, 2010, 17(5): 501-504.

DOI：10.1109/LSP.2009.2035414

• DSSS
• FFT
• interference excision
• threshold

We present a robust threshold setting strategy with modest computational complexity for frequency domain interference excision in direct sequence spread-spectrum (DSSS) communication systems. The proposed strategy calculates the threshold by multiplying the minimum value of the averaged squared magnitude with a predefined scaling factor. An analytical framework for choosing the scaling factor is developed based on the principle of constant false-alarm rate (CFAR). Numerical results indicate that the new strategy outperforms existing ones in a wide range of partial-band jamming scenarios.

• 出版日期2010-5
• 单位北京理工大学