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Optimization of Time Domain Windowing and Guardband Size for Cellular OFDM Systems
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OFDM signals have sidelobes in the spectrum, causing interference to the neighboring frequency channels in a cellular system. The sidelobes can be suppressed by Raised Cosine (RC) windowing in time domain, while the inter-cell interference can be suppressed by reserving a guardband between neighboring frequency channels. A higher Roll-Off Factor (ROF) of the RC window leads to better sidelobe suppression and allows a smaller guardband size, increasing the spectral efficiency. However, higher ROF implies longer symbol duration and reduced data rate. Therefore, there exist a tradeoff between the ROF and the guardband size. In this paper, a joint optimization technique for the ROF and guardband size is presented, which maximizes the data rate.
@inproceedings{LKK08ootd,
author = "Jian Luo and Wilhelm Keusgen and Andreas Kortke",
title = "{Optimization of Time Domain Windowing and Guardband Size for Cellular OFDM Systems}",
booktitle = "{2008 IEEE 68th Vehicular Technology Conference (VTC2008-Fall)}",
address = "Calgary, Canada",
month = "Sept. 21-24",
year = "2008",
}
Zuletzt verändert: 11.06.2009 15:46
Fokusseminar 02.11.2012
