Baseband Noise Suppression in Ofdm Using Kalman Filter

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As the technology is advances the reduced size of hardware gives rise to an additive 1/f baseband noise. This additive 1/f noise is a system noise generated due to miniaturization of hardware and affects the lower frequencies. Though 1/f noise does not show much effect in wide band channels because of its nature to affect only certain frequencies, 1/f noise becomes a prominent in OFDM communication systems where narrow band channels are used. in this thesis, I study the effects of 1/f noise on the OFDM systems and implement algorithms for estimation and suppression of the noise using Kalman filter. ... continued below

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Rodda, Lasya May 2012.

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  • Rodda, Lasya

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As the technology is advances the reduced size of hardware gives rise to an additive 1/f baseband noise. This additive 1/f noise is a system noise generated due to miniaturization of hardware and affects the lower frequencies. Though 1/f noise does not show much effect in wide band channels because of its nature to affect only certain frequencies, 1/f noise becomes a prominent in OFDM communication systems where narrow band channels are used. in this thesis, I study the effects of 1/f noise on the OFDM systems and implement algorithms for estimation and suppression of the noise using Kalman filter. Suppression of the noise is achieved by subtracting the estimated noise from the received noise. I show that the performance of the system is considerably improved by applying the 1/f noise suppression.

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  • May 2012

Added to The UNT Digital Library

  • Nov. 6, 2012, 3:03 p.m.

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  • Nov. 16, 2016, 5:46 p.m.

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Rodda, Lasya. Baseband Noise Suppression in Ofdm Using Kalman Filter, thesis, May 2012; Denton, Texas. (digital.library.unt.edu/ark:/67531/metadc115147/: accessed December 15, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .