System and method for angle of arrival (AoA) estimation
AssigneeNXP B.V.
InventorsShreyas Srirama reddy Manjuladevi, Radha Srinivasan, Tushar Nagrare
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Abstract
Embodiments of wireless communications systems, ultra-wide band (UWB) systems, and methods for wireless communications are described. In an embodiment, a wireless communications system includes a processor configured to obtain an angle of arrival (AoA) estimate from wireless signals; perform a Channel Impulse Response (CIR) analysis, and determine a confidence level for the AoA estimate based on the CIR analysis.
Claims19
A wireless communications system comprising:
- a processor configured to:
- obtain an angle of arrival (AoA) estimate from a plurality of wireless signals;
- perform a Channel Impulse Response (CIR) analysis;
- and
- determine a confidence level for the AoA estimate based on the CIR analysis;
- wherein the processor is further configured to perform the CIR analysis to obtain multipath component information and phase difference of Arrival (PDoA) variance information.
A ultra-wide band (UWB) system comprising:
- a multi-antenna UWB receiver arrangement configured to receive a plurality of UWB signals;
- a processor operably connected to the multi-antenna UWB receiver arrangement, wherein the processor is configured to:
- obtain an angle of arrival (AoA) estimate from the UWB signals;
- perform a Channel Impulse Response (CIR) analysis by analyzing a plurality of complex CIR samples of a plurality of receivers of the multi-antenna UWB receiver arrangement;
- and
- determine a confidence level for the AoA estimate based on the CIR analysis;
- and
- a storage unit configured to store the AoA estimate and the confidence level for the AoA estimate;
- wherein the processor is further configured to perform the CIR analysis to obtain multipath component information and phase difference of Arrival (PDoA) variance information.
A method for wireless communications comprising:
- obtaining an angle of arrival (AoA) estimate from a plurality of wireless signals;
- performing a Channel Impulse Response (CIR) analysis;
- and
- determining a confidence level for the AoA estimate based on the CIR analysis;
- wherein performing the CIR analysis comprises performing the CIR analysis to obtain multipath component information and phase difference of Arrival (PDoA) variance information.
A wireless communications system comprising:
- a processor configured to:
- obtain an angle of arrival (AoA) estimate from a plurality of wireless signals;
- perform a Channel Impulse Response (CIR) analysis;
- and
- determine a confidence level for the AoA estimate based on the CIR analysis;
- wherein the processor is further configured to analyze a plurality of complex CIR samples to obtain confidence information of a rising edge and confidence information of a main lobe width of the complex CIR samples.
A wireless communications system comprising:
- a processor configured to:
- obtain an angle of arrival (AoA) estimate from a plurality of wireless signals;
- perform a Channel Impulse Response (CIR) analysis;
- and
- determine a confidence level for the AoA estimate based on the CIR analysis;
- wherein the processor is further configured to obtain a phase difference of Arrival (PDoA) slope value and PDoA ambiguous region information and to determine the confidence level for the AoA estimate based on the PDoA slope value and the PDoA ambiguous region information.
Dependencies are inferred from the claim text.