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Telecommunication Systems

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01-10-2016

Optimal pilot design for OFDM systems with non-contiguous subcarriers based on semi-definite programming

Authors: Weiqiang Pan, Zhilong Shan, Ting Chen, Fangjiong Chen, Jing Feng

Published in: Telecommunication Systems | Issue 2/2016

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Abstract

In this paper we consider OFDM systems with non-contiguous subcarriers where distributed spectrum fragments are applicable for transmission. A new model is proposed for pilot optimization with respect to location and power. The least-square approach is applied for channel estimation at the receiver and the optimization objective is to minimize the mean square error of the channel estimation. This optimization problem is then formulated as minimizing the spread of the eigenvalues of a positive semidefinite matrix, which is a typical semidefinite programming problem, and hence it can be solved with conventional interior-point method. Simulation results show the efficiency of the proposed algorithm.

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Title: Optimal pilot design for OFDM systems with non-contiguous subcarriers based on semi-definite programming
Authors: Weiqiang Pan
Zhilong Shan
Ting Chen
Fangjiong Chen
Jing Feng
Publication date: 01-10-2016
Publisher: Springer US
Published in: Telecommunication Systems / Issue 2/2016
Print ISSN: 1018-4864
Electronic ISSN: 1572-9451
DOI: https://doi.org/10.1007/s11235-015-0121-7

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