Referenced Items are not available for this document.
In this paper, we provide a geometric interpretation of the Peak Interference to Carrier Ratio (PICR) of OFDM signals. Based on this interpretation, we propose a simple approach to reduce the sensitivity of OFMA system to carrier frequency offset (CFO). The main idea is to choose a well understood code and to rotate each coordinate of the code by a fixed phase shift such that the maximum inter-carrier interference (ICI) taken over all sub-carriers is minimized. This approach enjoys the twin benefits of interference reduction and error correction and is easy to implement in practice. Simulation results show that a reduction of 7 dB can freely be obtained.
Published in:
Global Telecommunications Conference (GLOBECOM 2011), 2011 IEEE
Date of Conference: 5-9 Dec. 2011
- Page(s):
- 1 - 5
- ISSN :
- 1930-529X
- E-ISBN :
- 978-1-4244-9267-1
- Print ISBN:
- 978-1-4244-9266-4
- INSPEC Accession Number:
- 12505455
- Conference Location :
- Houston, TX, USA
- Digital Object Identifier :
- 10.1109/GLOCOM.2011.6133563
- Product Type:
- Conference Publications
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