Inter-channel interference correlation matrix in OFDM system based on GeE-BEM

Authors:
Tao Chi;Xuebo Chen;Lidong Wang;Sizhen Fan
Affiliations:
University of Science and Technology Liaoning, Anshan, P. R.China;University of Science and Technology Liaoning, Anshan, P. R.China;University of Science and Technology Liaoning, Anshan, P. R.China;Shenyang University Xinmin Normal College, Xinmin, P. R.China
Venue:
ICACT'10 Proceedings of the 12th international conference on Advanced communication technology
Year:
2010

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Abstract

Orthogonal Frequency Division Multiplexing (OFDM) is regarded as a feasible alternative for high data rate communication systems, mainly because of its inherent equalization simplicity. Based on the channel model described by generalized complex exponential basis expansion model (GCE-BEM) in OFDM systems, which is more accurate than the conventional complex exponential basis expansion model (CE-BEM), we calculate the correlation matrix of inter-channel interference (ICI) in the channel estimation method described in [1] and [3]. The correlation matrix is verified to be a scaled identity matrix under the same assumption as in [2], the property of which is a premise of optimal pilot insertion scheme proposed in [2].