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A novel front-end noise power and snr estimation using wavelet-packets in OFDM systems

R.S., Manzoor and V., Jeoti and N.S., Kamel and M., Asif (2008) A novel front-end noise power and snr estimation using wavelet-packets in OFDM systems. In: International Conference on Wireless Information Networks and Systems, WINSYS 2008, 26 July 2008 through 29 July 2008, Porto.

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Abstract

In this paper, a noise power estimator based on one OFDM preamble is proposed. The estimator, unlike others, performs noise power estimation at the front-end of the receiver. The proposed estimator takes into consideration the different noise power levels over the OFDM sub-carriers. The OFDM band is divided into several sub-bands using wavelet packet and noise in each sub-band is considered white. The second-order statistics of the transmitted OFDM preamble are calculated in each sub-band and the noise power is estimated. The proposed estimator is compared with Reddy's estimator for colored noise in terms of mean squared error (MSE).

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:Acoustic intensity; Adaptive modulation; Computer networks; Delta modulation; Frequency allocation; Frequency division multiplexing; Information services; Mean square error; Modulation; Orthogonal frequency division multiplexing; Signal to noise ratio; Telecommunication systems; Colored noises; Noise power estimation; OFDM; OFDM systems; Second-order statistics; SNR; SNR estimations; Squared errors; Wavelet packets; Wireless networks
Subjects:T Technology > TK Electrical engineering. Electronics Nuclear engineering
Departments / MOR / COE:Departments > Electrical & Electronic Engineering
ID Code:447
Deposited By: Assoc Prof Dr Nidal Kamel
Deposited On:09 Mar 2010 02:00
Last Modified:19 Jan 2017 08:26

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