@inproceedings{scholars417, pages = {140--144}, address = {Porto}, title = {A novel front-end noise power and snr estimation using wavelet-packets in OFDM systems}, journal = {WINSYS 2008 - International Conference on Wireless Information Networks and Systems, Proceedings}, year = {2008}, note = {cited By 0; Conference of International Conference on Wireless Information Networks and Systems, WINSYS 2008 ; Conference Date: 26 July 2008 Through 29 July 2008; Conference Code:74935}, 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}, url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-58049160187&partnerID=40&md5=2244d85eb80d13b078c607d11e30f25c}, 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).}, author = {Manzoor, R. S. and Jeoti, V. and Kamel, N. and Asif, M.}, isbn = {9789898111623} }