Abstract




 
   

IJE TRANSACTIONS A: Basics Vol. 32, No. 4 (April 2019) 510-518    Article in Press

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  DIGITAL BINARY PHASE-SHIFT KEYED SIGNAL DETECTOR
 
O. V. Chernoyarov, L. A. Golpaiegani, A. N. Glushkov, V. P. Lintvinenko and B. V. Matveev
 
( Received: September 26, 2018 – Accepted: March 07, 2019 )
 
 

Abstract    We have developed the effective algorithm for detecting digital binary phase-shift keyed signals. This algorithm requires a small number of arithmetic operations over the signal period. It can be relatively easy implemented based on the modern programmable logic devices. It also provides high interference immunity by identifying signal presence when signal-to-noise ratio is much less that its working value in the receiving path. The introduced detector has intrinsic frequency selectivity and allows us to form the estimate of the noise level to realize the adaptive determination of decision threshold. In order to get confirmation of the detector operability and performance, we suggest the expressions for false alarm and missing probabilities. In addition, we have examine, both theoretically and experimentally, the influence of the detector parameters on its characteristics.

 

Keywords    Phase-shift Keying; Signal Detection; Fast Digital Processing; Noise Interference; Interference Immunity

 

چکیده   

در این کار الگوریتم مؤثری برای آشکارسازی سیگنال های دیجیتال باینری فشرده شده توسعه داده شده است. این الگوریتم نیاز به تعداد کمی از عملیات محاسباتی در طول دوره سیگنال دارد و می تواند نسبتا آسان بر اساس دستگاه های منطقی قابل برنامه ریزی پیاده سازی شود. همچنین با تشخیص وجود سیگنال، وقتی که نسبت سیگنال به نویز بسیار کمتر از مقدار کاری آن در مسیر دریافت است، مصونیت تداخل بالا را فراهم می کند. آشکارساز معرفی شده دارای فرکانس ذاتی انتخابی است و به ما امکان میدهد تا تخمین سطح نویز را برای رسیدن به تعریف سازگار آستانه تصمیم گیری بسازیم. به منظور تأیید کارایی و عملکرد آشکارساز، عباراتی برای آلارم اشتباه و احتمالات از دست رفته پیشنهاد شده است و از لحاظ نظری و تجربی، تأثیر پارامترهای آشکارساز بر ویژگی های آن مورد بررسی قرار گرفته است.

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