Ann-Chen Chang

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This paper deals with direction of arrival (DOA) estimation and blind signal separation (BSS) based on independent component analysis (ICA) with robust capabilities. An efficient demixing procedure of complex-valued ICA is presented here, which combines the signal-subspace demixing procedure exploiting individual signal-subspace projection and Newton’s(More)
The inherent robustness of the H∞ algorithm in dealing with modeling disturbances is used to improve the performance of imperfect antenna array with the generalized sidelobe canceller structure. The modeling disturbances include sensor gain perturbation, initial condition error, and colored noise contamination. The in,uence of modeling disturbances, which(More)
This paper presents a simple iterative carrier frequency offset (CFO) estimator based on the minimum variance distortionless response (MVDR) criterion for interleaved orthogonal frequency division multiple access (OFDMA) uplink systems, without using specific training sequences. The proposed estimator iteratively searches for correct CFO vector by(More)