Receive path

Abstract

A receive path comprising a processing module configured to receive a first portion of a data packet of a received signaling from a first antenna, receive a carrier estimate signal, adjust the first portion based on the carrier estimate signal and correlate the signal with an expected code sequence to provide a first correlation signal, a tracking module configured to receive the first correlation signal and update the carrier estimate signal, wherein the processing module is further configured to receive a second portion of the data packet from a second antenna, adjust the second portion based on the carrier estimate signal and correlate the signal to provide a second correlation signal, and wherein the receive path further comprises a phase computation module configured to receive the first and second correlation signals and determine a respective first and second carrier phase and an angle of arrival of the received signaling.

Claims

1. A receiving path for calculating the angle of arrival of received signaling, characterized in that, The receiving path includes: The processing module is configured to: Receive the first portion of the data packet containing the received signaling from the first antenna; Receive carrier estimation signal; The frequency and / or phase of the first portion are adjusted based on the carrier estimation signal to provide a first corrected signal; and The first corrected signal is correlated with the expected code sequence to provide a first correlation signal; The tracking module is configured to: Receive the first related signal; and The carrier estimation signal is updated based on the first correlation signal. The processing module is further configured to: Receive the second part of the data packet from the second antenna; The carrier estimation signal is received based on the first correlation signal; The frequency and / or phase of the second portion are adjusted based on the carrier estimation signal to provide a second corrected signal; and The second corrected signal is correlated with the expected code sequence to provide a second correlation signal, and The receiving path further includes a phase calculation module, which is configured to: Receive the first correlation signal and determine the first carrier phase based on the first correlation signal; Receive the second correlation signal and determine the second carrier phase based on the second correlation signal; and The arrival angle of the data packet of the received signaling is determined based on the first carrier phase and the second carrier phase; The tracking module is enabled during the reception of the first portion, such that the tracking module is configured to update the carrier estimation signal; and The tracking module is deactivated before receiving the second part, so that the carrier estimation signal remains constant during the reception of the second part.

2. The receiving path according to claim 1, characterized in that, The phase calculation module is configured to: The first channel impulse response (CIR) is determined based on the first correlation signal, and the second CIR is determined based on the second correlation signal; A first path sample is determined based on the first CIR, and a second path sample is determined based on the second CIR; as well as The first carrier phase is determined based on the first path sample, and the second carrier phase is determined based on the second path sample.

3. The receiving path according to claim 1 or 2, characterized in that, The phase calculation module is configured to apply a correction factor to the second carrier phase based on the residual frequency offset error of the tracking module.

4. The receiving path according to claim 3, characterized in that, The receiving path is configured as follows: A reference data packet is received before the data packet of the received signaling; The reference carrier frequency offset is determined based on the reference data packet; as well as The residual frequency offset error is determined based on the reference carrier frequency offset.

5. The receiving path according to claim 3, characterized in that, The receiving path is configured as follows: Receive the transmitter carrier frequency offset from the transmitter; Determine the receiver carrier frequency offset; A reference carrier frequency offset is determined based on the transmitter carrier frequency offset and the receiver carrier frequency offset; as well as The residual frequency error is determined based on the reference carrier frequency offset.

6. The receiving path according to claim 4 or claim 5, characterized in that: The receiving path is configured to adjust the frequency of the analog front-end based on the reference carrier frequency offset; and The tracking module is configured to determine the residual frequency offset error as the carrier frequency offset of the first correlated signal.

7. A receiver, characterized in that, Including the receiving path as described in any of the preceding claims.

8. A receiver system, characterized in that, It includes multiple receiving paths according to any one of claims 1 to 6.

9. A method for calculating the angle of arrival of received signaling, characterized in that, include: Receive the first portion of the data packet containing the received signaling from the first antenna; Receive carrier estimation signal; The frequency and / or phase of the first portion are adjusted based on the carrier estimation signal to provide a first corrected signal; The first corrected signal is correlated with the expected code sequence to provide a first correlation signal; The carrier estimation signal is updated based on the first correlation signal. Receive the second part of the data packet from the second antenna; The carrier estimation signal is received based on the first correlation signal; The frequency and / or phase of the second portion are adjusted based on the carrier estimation signal to provide a second corrected signal; The second corrected signal is correlated with the expected code sequence to provide a second correlation signal; Receive the first correlation signal and determine the first carrier phase based on the first correlation signal; Receive the second correlation signal and determine the second carrier phase based on the second correlation signal; as well as The arrival angle of the data packet of the received signaling is determined based on the first carrier phase and the second carrier phase; During the reception of the first portion, the tracking module is enabled, such that the tracking module is configured to update the carrier estimation signal; as well as The tracking module is deactivated before receiving the second part, so that the carrier estimation signal remains constant during the reception of the second part.

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