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| The Method of BER Estimation on Digital Communication Baseband Equipment |
| YU Qing-hua,SHEN Xiao-qing,CHEN Si,XIA Wei,QIU Bin |
| China Satellite Maritime Tracking and Control Department, Jiangyin, Jiangsu 214431, China |
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Abstract A method using EVM and phase noise to evaluate the digital baseband equipment is proposed instead of BER for it is self-tested in close-loop and can’t be traceable. The relationship between EVM and BER in additive white Gaussian noise is analyzed and the empirical formula using EVM to predict BER is given. The effect of phase noise on BER is analyzed providing a way to predict BER when the phase noise come to a sharp change. A digital baseband equipment for testing object, the difference between the predicted results and the measured results is no bigger than 12.5% in 3 months after the predicting formula is established. The results show that the use of EVM and phase to evaluate the performance of the digital baseband equipment instead of BER is available in additive white Gaussian noise environment. What’s more, EVM reflects the effects in process directly and can be traced to the national standard.
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Received: 22 October 2015
Published: 28 February 2017
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2017, Vol. 38 
