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Proceedings Paper

A joint equalization algorithm in high speed communication systems
Author(s): Xin Hao; Changxing Lin; Zhaohui Wang; Binbin Cheng; Xianjin Deng
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Paper Abstract

This paper presents a joint equalization algorithm in high speed communication systems. This algorithm takes the advantages of traditional equalization algorithms to use pre-equalization and post-equalization. The pre-equalization algorithm takes the advantage of CMA algorithm, which is not sensitive to the frequency offset. Pre-equalization is located before the carrier recovery loop in order to make the carrier recovery loop a better performance and overcome most of the frequency offset. The post-equalization takes the advantage of MMA algorithm in order to overcome the residual frequency offset. This paper analyzes the advantages and disadvantages of several equalization algorithms in the first place, and then simulates the proposed joint equalization algorithm in Matlab platform. The simulation results shows the constellation diagrams and the bit error rate curve, both these results show that the proposed joint equalization algorithm is better than the traditional algorithms. The residual frequency offset is shown directly in the constellation diagrams. When SNR is 14dB, the bit error rate of the simulated system with the proposed joint equalization algorithm is 103 times better than CMA algorithm, 77 times better than MMA equalization, and 9 times better than CMA-MMA equalization.

Paper Details

Date Published: 20 February 2018
PDF: 6 pages
Proc. SPIE 10697, Fourth Seminar on Novel Optoelectronic Detection Technology and Application, 1069757 (20 February 2018); doi: 10.1117/12.2307085
Show Author Affiliations
Xin Hao, China Academy of Engineering Physics (China)
Changxing Lin, China Academy of Engineering Physics (China)
Zhaohui Wang, China Academy of Engineering Physics (China)
Binbin Cheng, China Academy of Engineering Physics (China)
Xianjin Deng, China Academy of Engineering Physics (China)


Published in SPIE Proceedings Vol. 10697:
Fourth Seminar on Novel Optoelectronic Detection Technology and Application
Weiqi Jin; Ye Li, Editor(s)

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