A New Iterative Decoder of Space-Time Data in Time Selective MIMO Channels

In this paper we present a new iterative decoder of Space-Time Block Coded data in the presence of carrier offsets. This decoder starts the iteration with a small amount of training data to find the initial estimate of carrier offset, channel and noise co-variance. Subsequently it attempts to find the estimate of the STBC data by an alternating maximization (AM) technique. In this way better estimates of Space–Time data are achieved after the final iteration as compared to those found without an iterative method. Thus the new decoder reduces the training overhead required by the conventional data-aided (DA) estimators for efficient estimates of carrier offsets and S–T data, and provides higher data rate.

[1]  A. Gualtierotti.  H. L. Van Trees, Detection, Estimation, and Modulation Theory, , 1976 .

[2]  Harry L. Van Trees,et al.  Detection, Estimation, and Modulation Theory: Radar-Sonar Signal Processing and Gaussian Signals in Noise , 1992 .

[3]  Siavash M. Alamouti,et al.  A simple transmit diversity technique for wireless communications , 1998, IEEE J. Sel. Areas Commun..

[4]  P. Stoica,et al.  Space-time block codes: ML detection for unknown channels and unstructured interference , 2001, Conference Record of Thirty-Fifth Asilomar Conference on Signals, Systems and Computers (Cat.No.01CH37256).

[5]  John G. Proakis,et al.  Digital Communications , 1983 .

[6]  A. Robert Calderbank,et al.  Space-Time Codes for High Data Rate Wireless Communications : Performance criterion and Code Construction , 1998, IEEE Trans. Inf. Theory.

[7]  Ilan Ziskind,et al.  Maximum likelihood localization of multiple sources by alternating projection , 1988, IEEE Trans. Acoust. Speech Signal Process..

[8]  A. Lee Swindlehurst,et al.  Blind and semi-blind equalization for generalized space-time block codes , 2002, IEEE Trans. Signal Process..

[9]  Petre Stoica,et al.  On parameter estimation of MIMO flat-fading channels with frequency offsets , 2003, IEEE Trans. Signal Process..

[10]  H. V. Trees.  Detection, Estimation, And Modulation Theory , 2001 .

[11]  A. Robert Calderbank,et al.  Space-Time block codes from orthogonal designs , 1999, IEEE Trans. Inf. Theory.

[12]  E. Masoud,et al.  Space-Time Block Coding for Wireless Communications , 2008 .

[13]  Brian L. Hughes.  Differential Space-Time modulation , 2000, IEEE Trans. Inf. Theory.

[14]  Hamid Jafarkhani,et al.  A differential detection scheme for transmit diversity , 2000, IEEE Journal on Selected Areas in Communications.

[15]  Vahid Tarokh,et al.  Space-time codes for wireless communication , 1997, Proceedings of IEEE International Symposium on Information Theory.

[16]  Georgios B. Giannakis,et al.  Double differential space-time block coding for time-selective fading channels , 2001, IEEE Trans. Commun..

[17]  A. Robert Calderbank,et al.  Space-time block coding for wireless communications: performance results , 1999, IEEE J. Sel. Areas Commun..

[18]  Steven Kay,et al.  A Fast and Accurate Single Frequency Estimator , 2022 .

[19]  Robert Boorstyn,et al.  Single tone parameter estimation from discrete-time observations , 1974, IEEE Trans. Inf. Theory.