Analysis of Galileo E1 Receiver Performance with a Power-controlled Front-end
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|Julkaisu||European Journal of Navigation|
|Tila||Julkaistu - 2015|
Power consumption is an important figure of merit for Global Navigation Satellite Systems (GNSS) receiver design. Low power consumption is essential in mass-market GNSS receivers which depend upon a battery for a power source. To achieve the reduction in the power consumption, the front-end of the receiver can be powered down for a fraction of time, but in a continuous manner so that the baseband can still keep track of the signals. This method can reduce the average power while still continuously tracking. However, its effects on the receiver performance have not been studied much in the literature. In this article, the authors analyze the receiver performance in terms of detection probability, code tracking error and bit error rate with different power switching time intervals. The analysis is performed both from the theoretical point of view and via signal simulations. Our results show that the performance of a power-controlled GNSS receiver is meaningfully degraded when power-blanking is applied. According to the obtained results, there
is a loss of around 3 dB in terms of Carrier-to-Noise-density ratio (C/N0) of the received signal in both acquisition and tracking while compared with the traditionalreceiver without having any power reduction.