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ENHANCEMENT OF LOW POWER AM SIGNAL IN AN ENVIRONMENT OF HIGH POWER AM INTERFERENCE | ||
| AL-TAQANI | ||
| Article 1, Volume 23, Issue 4, 2010, Pages 194-203 | ||
| Author | ||
| Nabil. K. AL-Shamma | ||
| Abstract | ||
| A simple electronic signal to interference power ratio enhancement system incorporating phase – locked loop (PLL) is analyzed and constructed. The system is capable of producing accurate estimation of the interfering signal in an environment of high interference to the desired signal power ratio (ISR)i . The estimate is then used to cancel the interference with consequent enhancement of the desired weak signal. Theoretical analysis indicates that the output signal to interference power ratio is a function of the phase difference between the desired signal and the interference phase estimation. However it is found that at the worst case the power of the desired signal is comparable to the interference power enabling the desired signal to be heard. | ||
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