TY - GEN
T1 - Combining Linear Estimation with Scalar Widely Linear Estimation
AU - Hellings, Christoph
AU - Utschick, Wolfgang
N1 - Publisher Copyright:
© 2019 IEEE.
PY - 2019/5
Y1 - 2019/5
N2 - We study the capabilities of a filter configuration where a linear filter is applied to an improper vector, and the output is processed by scalar widely linear filters afterwards. Assuming that this filter configuration is used to estimate a vector of interest from a noisy observation, we aim at finding the optimal filter coefficients in the sense of minimizing the mean square error. To this end, we propose a filter design algorithm based on alternating optimization. The resulting filter turns out to achieve an intermediate performance between the optimal widely linear filter and the optimal linear filter. As an application example, we discuss how the considered filter structure fits to the concept of linear transceivers in communication systems.
AB - We study the capabilities of a filter configuration where a linear filter is applied to an improper vector, and the output is processed by scalar widely linear filters afterwards. Assuming that this filter configuration is used to estimate a vector of interest from a noisy observation, we aim at finding the optimal filter coefficients in the sense of minimizing the mean square error. To this end, we propose a filter design algorithm based on alternating optimization. The resulting filter turns out to achieve an intermediate performance between the optimal widely linear filter and the optimal linear filter. As an application example, we discuss how the considered filter structure fits to the concept of linear transceivers in communication systems.
KW - MMSE filter
KW - improper signals
KW - widely linear.
UR - http://www.scopus.com/inward/record.url?scp=85069002999&partnerID=8YFLogxK
U2 - 10.1109/ICASSP.2019.8683230
DO - 10.1109/ICASSP.2019.8683230
M3 - Conference contribution
AN - SCOPUS:85069002999
T3 - ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
SP - 5177
EP - 5181
BT - 2019 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2019 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 44th IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2019
Y2 - 12 May 2019 through 17 May 2019
ER -