Iterative decoding and carrier frequency offset estimation for a space-time block code system

Authors:
Ming Luo;Qinye Yin;Le Ding;Yiwen Zhang
Affiliations:
School of Electronics and Information Engineering, Xi'an Jiaotong University, Xi'an, P.R.China;School of Electronics and Information Engineering, Xi'an Jiaotong University, Xi'an, P.R.China;School of Electronics and Information Engineering, Xi'an Jiaotong University, Xi'an, P.R.China;School of Electronics and Information Engineering, Xi'an Jiaotong University, Xi'an, P.R.China
Venue:
ICN'05 Proceedings of the 4th international conference on Networking - Volume Part II
Year:
2005

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Abstract

In the paper, we address the problem of blind decoding and carrier frequency offset estimation for a full rate space-time block coded system. The system is subject to unknown frequency-selective fading channel and carrier frequency offsets between transmitter and receiver. An iterative method is proposed to estimate frequency offsets and decode the space time block code. The unknown frequency selective channel is first blindly equalized via subspace-based method, then decoding and frequency offsets estimation are achieved iteratively by exploiting structure of space time block code and finite alphabet property of encoded symbols. Simulation results are presented to demonstrate performance of the method.