Journal ArticleDOI
Comparison Between Ratio Detection and Threshold Comparison for GNSS Acquisition
TLDR
Despite the purported simplicity of the ratio detection method, it is shown that its complexity is comparable to or even higher than the one of threshold comparison with adaptive threshold setting.Abstract:
A comparison between two widespread global navigation satellite system (GNSS) acquisition strategies is presented. The first strategy bases its decision on comparing the energy within a cell to a threshold, while the second one uses the ratio between the two largest cell energies. It is shown that the first method outperforms the second one in terms of receiver operating characteristics (ROCs) in many practically relevant cases. Moreover, despite the purported simplicity of the ratio detection method, it is further shown that its complexity is comparable to or even higher than the one of threshold comparison with adaptive threshold setting.read more
Citations
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Journal ArticleDOI
GLRT Approach for Robust Burst Packet Acquisition in Wireless Communications
TL;DR: It is shown that fading results in significant deterioration for GLRT; whereas GLRT has ability to exploit multipath diversity to reduce fading effect and improve acquisition performance.
Journal ArticleDOI
High Sensitivity and Fast Acquisition Signal Processing Techniques for GNSS Receivers: From fundamentals to state-of-the-art GNSS acquisition technologies
TL;DR: The fundamentals of GNSS acquisition functions and various GNSS Acquisition techniques for new GNSS signals are introduced and recent acquisition techniques achieving high sensitivity and fast acquisition are investigated.
Resource-efficient parallel acquisition architectures for modernized GNSS signals
TL;DR: Simple methods to reduce the complexity of the FFT or of acorrelation computed by FFT (or of a convolution) on Altera FPGAs are shown and apply to any other systems computing FFTs, convolutions, or correlations, since no assumption is made on the signals.
Journal ArticleDOI
Neumann-Hoffman Code Evasion and Stripping Method For BeiDou Software-defined Receiver
TL;DR: An NH Code Evasion and Stripping method (NCES) based on the NH-pre-modulated code based on an extension of Fast Fourier Transform (FFT)-based parallel code-phase search acquisition gives the NCES an advantage in engineering applications.
Journal ArticleDOI
Determination of Detection Parameters on TDCC Performance
Binhee Kim,Seung-Hyun Kong +1 more
TL;DR: In this paper, the optimal detection thresholds of TDCC are investigated to optimize its acquisition performance, and it is demonstrated that the minimized MAT and MAC are much smaller than the MAT using a detection threshold based on CFAR (Constant False Alarm Rate).
References
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A Unified Approach to Serial Search Spread-Spectrum Code Acquisition--Part I: General Theory
Andreas Polydoros,C. Weber +1 more
TL;DR: The theory is formulated in a general manner which allows for significant freedom in the receiver modeling and the statistics of the acquisition time for the single-dwell, N-Dwell, and single- dwell systems are shown to be special cases of this unified approach.
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