@inproceedings{29e7eeff2e1e4a70924063be02a19ecb,
title = "Combined spectrum pooling and adaptive bit loading for cognitive radio ofdm based system",
abstract = "This paper presents the combination of adaptive bit loading and spectrum pooling to be applied in a Cognitive Radio system. Adaptive bit loading is a method to adapt the constellation size of the transmitted signal according to the channel variations by exclusion of heavily faded carriers from transmission and as a compensation higher modulation modes are allocated to subcarriers with good SNR. Windowing of OFDM signal is a spectrum pooling method for shaping the signal spectrumin order to reduce interference to neighbouring system ( legacy users). In this paper different OFDM adaptive bit loading algorithms are combined with serval window funtions, and the bit error rate performance of the system is simulated for a wide sense stationary uncorrelated scattering (WSSUS) mobile mutlipath channel. The new results of this paper show how promising is the combination of bit loading algorithm and window form.",
keywords = "conference contrib. refereed, Conf.proc. > 3 pag",
author = "I Budiarjo and H Nikookar and LP Ligthart",
year = "2006",
language = "Undefined/Unknown",
isbn = "0780397851",
publisher = "IEEE",
pages = "73--76",
editor = "s.n.",
booktitle = "Proceedings IEEE SCVT 2006",
address = "United States",
note = "IEEE SCVT 2006 ; Conference date: 23-11-2006",
}