Statistical Analysis of Interference in Asynchronous MC-CDMA Systems

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dc.contributor.author Li, Xuan. en_AU
dc.contributor.author Senadji, Bouchra. en_AU
dc.date.accessioned 2007-03-12T22:05:44Z
dc.date.accessioned 2012-12-15T02:29:43Z
dc.date.available 2007-03-12T22:05:44Z
dc.date.available 2012-12-15T02:29:43Z
dc.date.issued 2007-03-12T22:05:44Z
dc.identifier.uri http://hdl.handle.net/2100/140
dc.identifier.uri http://hdl.handle.net/10453/19664
dc.description.abstract Two major sources of interference affect asynchronous MC-CDMA systems, i.e. multiple access interference due to subcarriers with the same frequency (MAI) and multiple access interference due to subcarriers with different frequency (ICI). Both MAI and ICI are generally modelled as zero-mean Gaussian random variable and their power has been previously been derived in the case of uniformly distributed timing offsets. In this paper, we derive an expression of the conditional power of the MAI and ICI as a function of timing offset. The advantage is that the interference power can then be derived for various distributions of the timing offsets. We then apply the expression to calculating the MAI and ICI power for two different distributions of timing offsets, i.e. uniform distribution and Poisson distribution. Finally, we propose a statistical model for asynchronous MC-CDMA systems that will simplify the computer simulation process of these systems. It is based on modelling the asynchronous system with a synchronous system followed by additive noise representing the MAI and ICI. The model is validated by comparing the BER at the output of the asynchronous system and the model. en_AU
dc.format.extent 167019 bytes
dc.format.mimetype application/pdf
dc.language.iso en_AU
dc.title Statistical Analysis of Interference in Asynchronous MC-CDMA Systems en_AU


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