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A Robust Semi-Blind Receiver for Joint Symbol and Channel Parameter Estimation in Multiple-Antenna Systems

1
School of Information and Communication Engineering, Communication University of China, Beijing 100024, China
2
Power Dispatching Control Center, Guangxi Power Grid, Nanning 530023, China
*
Author to whom correspondence should be addressed.
Electronics 2019, 8(5), 550; https://doi.org/10.3390/electronics8050550
Received: 9 April 2019 / Revised: 25 April 2019 / Accepted: 8 May 2019 / Published: 16 May 2019
(This article belongs to the Special Issue Multidimensional Digital Signal Processing)
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Abstract

For multiple-antenna systems, the technologies of joint symbol and channel parameter estimation have been developed in recent works. However, existing technologies have a number of problems, such as performance degradation and the large cost of prior information. In this paper, a tensor space-time coding scheme in multiple-antenna systems was considered. This scheme allowed spreading, multiplexing, and allocating information symbols associated with multiple transmitted data streams. We showed that the received signal was formulated as a third-order tensor satisfying a Tucker-2 model, and then a robust semi-blind receiver was developed based on the optimized Levenberg–Marquardt (LM) algorithm. Under the assumption that the instantaneous channel state information (CSI) is unknown at the receiving end, the proposed semi-blind receiver jointly estimates the information symbol and channel parameters efficiently. The proposed receiver had a better estimation performance compared with existing semi-blind receivers, and still performed well when the channel became strongly correlated. Moreover, the proposed semi-blind receiver could be extended to the multi-user massive multiple-input multiple-output (MIMO) system for joint symbol and channel estimation. Computer simulation results were shown to demonstrate the effectiveness of the proposed receiver. View Full-Text
Keywords: multiple-antenna systems; third-order tensor; Tucker-2 model; semi-blind receiver; optimized LM algorithm multiple-antenna systems; third-order tensor; Tucker-2 model; semi-blind receiver; optimized LM algorithm
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Du, J.; Han, M.; Hua, Y.; Chen, Y.; Lin, H. A Robust Semi-Blind Receiver for Joint Symbol and Channel Parameter Estimation in Multiple-Antenna Systems. Electronics 2019, 8, 550.

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