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�������պ����ѧѧ�� 2010, Vol. 36 Issue (5) :584-587    DOI:
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Method for measuring recovery time of digital television receiver

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Abstract��

Recovery time of digital television (DTV) receiver is an important indicator of DTV service quality but the recovery time can not be measured directly with existing equipments. A new method was presented which measure the recovery time by bit error rate (BER) tester and impulse noise source through a series of the errored seconds caused by impulse noise. Different from the traditional way, a random trigger of pulses was used in this method, which resulted that the estimation of recovery time was not associated with the pulse��s start time. Without limit of the impulse noise length, the method can be used for measuring recovery time of the longer time��interleaver transmission systems. The recovery time measured in this method is with a precision of 0.1s, which is an order of magnitude lower than past experiments. The effect of experimental parameters on recovery time was analyzed with the test result in a digital terrestrial multimedia broadcasting (��DTMB��) receiver.

Keywords�� digital television   broadcasting   receivers   recovery   testing     
Received 2009-07-01;
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·�̣�������.���ֵ��ӽ��ջ�ͬ��ʱ����ⷽ��[J]  �������պ����ѧѧ��, 2010,V36(5): 584-587
Lu Cheng��Zhang Xiaolin.Method for measuring recovery time of digital television receiver[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2010,V36(5): 584-587
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