Infineon Technologies Ag

Intel Mobile Communications Gmbh

Intel Deutschland Gmbh

Andreas Schmid

André Neubauer

Markus Hammes

Stefan Van Waasen

Mikael Hjelm

Joakim Landmark

Method and apparatuses involving satellite position signals are disclosed. Based on data indicating a usage environment, parameters, for example acquisition parameters or calculation parameters, are adapted.

Satellite-based position determination

Embodiments related to acquisition, detection, and processing of a high-frequency signal in a global positioning system are described and depicted.

Squaring loss inhibition for low signal levels in positioning systems

Embodiments related to acquisition, detection, and processing of a high-frequency signal are described and depicted.

Adaptive correlation for detection of a high-frequency signal

Apparatuses are described and disclosed which operate in a first mode to receive non-position signals, for example FM radio signals, and in a second mode of operation to receive land-based position signals, for example LORAN signals.

Position signal receiver

A description is given of a device and a method for the noise shaping of a transmission signal such as are employed, for example, in a data transmission system.

Method and device for the noise shaping of a transmission signal

Embodiments related to global positioning are described and depicted.

Galileo/GPS receiver with improved positioning accuracy

Embodiments related to cross-talk mitigation are described and depicted.

Cross-talk mitigation in global navigation satellite systems

In a method for estimating a frequency deviation between a received spread-spectrum code signal and a local frequency signal, the received spread-spectrum code signal is despread using a local spread-spectrum code. The despread signal is integrated over a particular integration period. From at least two successively obtained integration values, a phase change value characteristic of the phase change between the two integration values is calculated. From this, the frequency deviation is determined.

Method and device for estimating a frequency in the acquisition of a spread-spectrum code signal

This disclosure relates to systems and methods for polar modulation without analog filters. Digitals filters, a second order hold interpolator and a reconfigurable third order noise shaper can be used instead of the analog filters used in conventional polar modulators. The polar modulator receives either receives the input in polar coordinates or converts the signal into polar phase and amplitude components. The phase and amplitude components are processed separately using digital signal processing components including digital filters, PLL, interpolator and noise shaper. The processed phase and amplitude components are then mixed to generate the modulated signal.

Polar modulation without analog filtering

In order to improve the reliability and the accuracy of a position-finding method such as the GPS method, the quality of a radio link which is used for the position-finding method is determined by estimating a parameter, in particular the Rice factor of the amplitude distribution density, which is characteristic of the ratio of the strength of a signal transmitted via a line-of-sight path, with respect to the strength of the signals transmitted via non-line-of-sight paths.

Reliability and the accuracy of position-finding methods by estimation of the Rice factor of a radio link

A receiver () of a position-finding system comprises a calculation unit () for calculation of a statistical value (&#x39b;) on the basis of a received signal, and a detector unit () for comparison of the statistical value (&#x39b;) with a threshold value (&#x3ba;) and for determining whether the received signal is a synchronized location signal, an estimation unit () for estimation of the Rice factor (K) of the radio link via which the received signal has been transmitted, and a determination unit for calculation of the threshold value (&#x3ba;) on the basis of the Rice factor (K).

Receiver for a position-finding system with improved sensitivity

The invention relates to a receiver in a position-finding system, having a calculation unit for calculating a statistical value from a received signal, and a detector unit for comparing the statistical value with a threshold value and for determining whether the signal is a synchronized position-finding signal. The system also includes an estimation unit for estimating the quotient of the signal-carrier power and the noise-power spectral density of the signal, and a determination unit for threshold-value determination from the estimated quotient.

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Duisburg, Germany

Andreas Schmid