Methods and apparatuses for processing an ofdm radar signal
AssigneeInfineon Technologies AG
InventorsOliver LANG, Alexander ONIC, Christian SCHMID
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Abstract
Methods for processing an OFDM radar signal are provided. A plurality of Nc×NDS receive samples corresponding to a number of NDS consecutive OFDM symbols is received, each OFDM symbol comprising a plurality of Nc subcarriers modulated with a respective modulation symbol. Each of the plurality of Nc×NDS receive samples is divided by its respective modulation symbol to generate a number of NDS processed OFDM symbols. The number of NDS processed OFDM symbols is decimated to generate at least one decimated OFDM symbol. A first type discrete Fourier transform (e.g. IFFT) of the at least one decimated OFDM symbol is performed to generate at least one first transformed vector.
Claims21
A method for processing an orthogonal frequency-division multiplexing (OFDM) radar signal, the method comprising:
- receiving a plurality of Nc×NDS receive samples corresponding to a number of NDS consecutive OFDM symbols, each OFDM symbol comprising a plurality of Nc subcarriers modulated with a respective modulation symbol;
- processing each of the plurality of Nc×NDS receive samples by division with its respective modulation symbol to generate a number of NDS processed OFDM symbols;
- decimating the number of NDS processed OFDM symbols to generate at least one decimated OFDM symbol;
- and
- performing a first type discrete Fourier transform of the at least one decimated OFDM symbol to generate at least one first transformed vector.
A method for processing an orthogonal frequency-division multiplexing (OFDM) radar signal, the method comprising:
- receiving a plurality of Nc×NDS receive samples corresponding to a number of NDS consecutive OFDM symbols, each OFDM symbol comprising a plurality of Nc subcarriers modulated with a respective modulation symbol;
- processing each of the plurality of Nc×NDS receive samples by division with its respective modulation symbol to generate a number of NDS processed OFDM symbols;
- performing a first type discrete Fourier transform of the number of NDS processed OFDM symbols to generate a number of NDS respective transformed vectors;
- and
- decimating the number of NDS transformed vectors to generate at least one decimated transformed vector.
An apparatus for processing an orthogonal frequency-division multiplexing (OFDM) radar signal, the apparatus comprising:
- a receiver configured to receive a plurality of Nc×NDS receive samples corresponding to a number of NDS consecutive OFDM symbols, each OFDM symbol comprising a plurality of Nc subcarriers modulated with a respective modulation symbol;
- and
- a processor configured to:
- process each of the plurality of Nc×NDS receive samples by division with its respective modulation symbol to generate a number of NDS processed OFDM symbols;
- decimate the number of NDS processed OFDM symbols to generate at least one decimated OFDM symbol;
- and
- perform a first type discrete Fourier transform of the at least one decimated OFDM symbol to generate at least one first transformed vector.
An apparatus for processing an orthogonal frequency-division multiplexing (OFDM) radar signal, the apparatus comprising:
- a receiver configured to receive a plurality of Nc×NDS receive samples corresponding to a number of NDS consecutive OFDM symbols, each OFDM symbol comprising a plurality of Nc subcarriers modulated with a respective modulation symbol;
- and
- a processor configured to:
- process each of the plurality of Nc×NDS receive samples by division with its respective modulation symbol to generate a number of NDS processed OFDM symbols;
- perform a first type discrete Fourier transform of the number of NDS processed OFDM symbols to generate a number of NDS respective transformed vectors;
- decimate the number of NDS transformed vectors to generate at least one decimated transformed vector.
An orthogonal frequency-division multiplexing (OFDM) radar transceiver, comprising:
- a receiver configured to receive a plurality of Nc×NDS receive samples corresponding to a number of NDS consecutive OFDM symbols, each OFDM symbol comprising a plurality of Nc subcarriers modulated with a respective modulation symbol;
- and
- a processor configured to:
- process each of the plurality of Nc×NDS receive samples by division with its respective modulation symbol to generate a number of NDS processed OFDM symbols;
- decimate the number of NDS processed OFDM symbols to generate at least one decimated OFDM symbol;
- and
- perform a first type discrete Fourier transform of the at least one decimated OFDM symbol to generate at least one first transformed vector.
An orthogonal frequency-division multiplexing (OFDM) radar transceiver, comprising:
- a receiver configured to receive a plurality of Nc×NDS receive samples corresponding to a number of NDS consecutive OFDM symbols, each OFDM symbol comprising a plurality of Nc subcarriers modulated with a respective modulation symbol;
- and
- a processor configured to:
- process each of the plurality of Ne×NDS receive samples by division with its respective modulation symbol to generate a number of NDS processed OFDM symbols;
- perform a first type discrete Fourier transform of the number of NDS processed OFDM symbols to generate a number of NDS respective transformed vectors;
- decimate the number of NDS transformed vectors to generate at least one decimated transformed vector.
Dependencies are inferred from the claim text.