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Study on the Echo Cancellation Technology for DVB-T Repeater

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Recent Advances in Computer Science and Information Engineering

Part of the book series: Lecture Notes in Electrical Engineering ((LNEE,volume 127))

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Abstract

A scheme of actualizing echo cancellation on digital TV repeater using joint channel estimation is proposed based on the analysis of the echo interference in digital video broadcasting for digital terrestrial television (DVB-T) repeater. In order to realize coarse estimation by the correlation principle of CAZAC code, a train sequence CAZAC code is first added in repeater system. Then, we adopt LMS algorithm to trace the character of channel simultaneously and the cancellation signals which is close to the echo signals are produced by coupling the signal of the transmitter. Finally echo cancellation is realized by subtracting the cancellation signals from the received signals. Simulation results show the favorable performance in echo cancellation and a broad utilization prospect in practical application.

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References

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Correspondence to Shaogang Dai .

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Dai, S., Zhang, F., Wu, M. (2012). Study on the Echo Cancellation Technology for DVB-T Repeater. In: Qian, Z., Cao, L., Su, W., Wang, T., Yang, H. (eds) Recent Advances in Computer Science and Information Engineering. Lecture Notes in Electrical Engineering, vol 127. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-25769-8_17

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  • DOI: https://doi.org/10.1007/978-3-642-25769-8_17

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-25768-1

  • Online ISBN: 978-3-642-25769-8

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