RF performance Analysis for Galileo Receiver Design

This paper presents the effects of RF performance parameters on the Galileo receiver design via simulation after reviewing the requirements of the Galileo receiver structure. At first, we considered the general requirements, structure and characteristics of the Galileo system. Then we designed the Galileo receiver focused on performance requirement of 16 ㏈ C/N which is equal to 15 % Error Vector Magnitude (EVM) by using Advanced Design System (ADS) simulation program. In order to verify the function of Automatic Gain Control (AGC)), we measured the IF output power level by changing the input power level at the front - end of the receiver. We analyzed the performance degradation due to phase noise variations of Local Oscillator (LO) in the Galileo receiver through EVM when the minimum sensitivity level of -127 ㏈m is applied at the receiver. We also analyzed the performance degradation according to variable Analog-to-Digital Converter (ADC) bits within the Dynamic range, -92 ~ -139 ㏈m, which has been defined by gain range (-2.5 ~ +42.5 ㏈) in the AGC operation. The results clearly show that the performance of the Galileo receiver can be improved by increasing ADC bits and reducing Phase Noise of LO.