01.12.2016  Research  Ausgabe 1/2016 Open Access
On the use of the channel secondorder statistics in MMSE receivers for time and frequencyselective MIMO transmission systems
1 Introduction
1.1 Summary of notation
2 Signal model
2.1 Time and frequencyselective MIMO channel
2.2 Stacked model
2.3 Kalman filtering
3 Linear MMSE smoothing
4 MMSE smoothing using the channel SOS
4.1 The observation autocorrelation matrix
4.2 Channel crosscorrelation matrices
4.3 The SOSMMSE smoother
5 DFE schemes

a conventional MMSE DFE that neglects the SOS generated by the KF, termed “MMSE + KF” in the sequel, and

the proposed SOSbased MMSE DFE, termed “SOSMMSE + KF”.