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Mutual Interference in OFDM-Based Spectrum Pooling Systems

Overview Public mobile radio spectrum has become a scarce resource while wide spectral ranges are only rarely used. Here, a new strategy called spectrum pooling is considered. It aims at enabling public access to these spectral ranges without sacrificing the transmission quality of the actual license owners. Unfortunately, using OFDM modulation in a spectrum pooling system has some drawbacks. There is an interaction between the licensed system and the OFDM based rental system due to the non-orthogonality of their respective transmit signals. In this paper, this interaction is described mathematically providing a quantitative evaluation of the mutual interference that leads to an SNR loss in both systems.

Further White Paper Details
Publisher	University of Karlsruhe	File Format	PDF, requires Acrobat Rdr 5
Date Published	October 2004	Downloads	439
Format	White Papers
Topics	Modems

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