Received signal equalization of wireless transmissions

1. A method comprising:

obtaining a first received signal of a first wireless transmission by a transmitting device of a wireless signal received at a receiving device;

obtaining a second received signal of a second wireless transmission by the transmitting device that is a retransmission of the wireless signal also received at the receiving device;

determining, based on the first received signal and the second received signal, an equalization of distortion of propagation of the wireless signal between the transmitting device and the receiving device; and

generating an equalized signal based on the determined signal equalization, wherein the equalized signal is an estimate of the wireless signal as transmitted by the transmitting device.

2. The method of claim 1 , wherein determining the equalization based on the first received signal and the second received signal includes:

determining a first channel estimate based on a first training signal of the first received signal;

determining a second channel estimate based on a second training signal of the second received signal;

determining a mixed channel estimate based on the first channel estimate and the second channel estimate; and

determining the equalization based on the mixed channel estimate.

3. The method of claim 2 , wherein determining the mixed channel estimate is in response to a correlation between the first channel estimate and the second channel estimate being within a particular threshold of each other.

4. The method of claim 2 , wherein determining the mixed channel estimate includes averaging the first channel estimate and the second channel estimate.

5. The method of claim 2 , wherein:

determining the mixed channel estimate based on the first channel estimate and the second channel estimate includes combining the first channel estimate and the second channel estimate such that the mixed channel estimate is configured as if the first received signal and the second received signal were received at the same time by different antennas; and

wherein generating the equalized signal includes:

combining the first received signal and the second received signal to obtain a combined received signal that is configured as if the first received signal and the second received signal were received at the same time by the different antennas; and

performing the equalization, using the mixed channel estimate, with respect to the combined received signal to generate the equalized signal.

6. The method of claim 5 , wherein:

combining the first channel estimate and the second channel estimate includes concatenating, to obtain a combined channel matrix, a first channel matrix that indicates the first channel estimate with a second channel matrix that indicates the second channel estimate;

combining the first received signal and the second received signal includes concatenating, to obtain a combined signal vector, a first signal vector that indicates the first received signal and a second signal vector that indicates the second received signal; and

performing the equalization includes applying the combined channel matrix to the combined signal matrix.

7. The method of claim 1 , wherein determining the equalization based on the first received signal and the second received signal includes:

determining a mixed channel estimate based on a first training signal of the first received signal and a second training signal of the second received signal; and

determining the equalization based on the mixed channel estimate.

8. The method of claim 1 , wherein:

determining the equalization based on the first received signal and the second received signal includes:

determining a channel estimate based on a training signal of the second received signal; and

determining a preliminary equalization of the equalization based on the channel estimate;

performing error decoding with respect to the first received signal to obtain first data of the wireless signal; and

determining an enhanced equalization based on the first data; and

wherein generating the equalized signal includes:

performing the preliminary equalization with respect to the second received signal to generate a preliminary equalized signal; and

modifying the preliminary equalized signal based on the enhanced equalization to generate the equalized signal.

9. A method comprising:

obtaining a first received signal of a first wireless transmission by a transmitting device of a wireless signal received at a receiving device;

obtaining a second received signal of a second wireless transmission by the transmitting device that is a retransmission of the wireless signal also received at the receiving device;

determining a mixed channel estimate based on the first received signal and the second received signal;

determining, based on the mixed channel estimate, an equalization of distortion of propagation of the wireless signal between the transmitting device and the receiving device; and

generating an equalized signal based on the determined signal equalization, wherein the equalized signal is an estimate of the wireless signal as transmitted by the transmitting device.

10. The method of claim 9 , wherein determining the mixed channel estimate includes:

determining a first channel estimate based on a first training signal of the first received signal;

determining a second channel estimate based on a second training signal of the second received signal; and

determining the mixed channel estimate based on the first channel estimate and the second channel estimate; and

determining the equalization based on the mixed channel estimate.

11. The method of claim 10 , wherein determining the mixed channel estimate is in response to a correlation between the first channel estimate and the second channel estimate being within a particular threshold of each other.

12. The method of claim 10 , wherein determining the mixed channel estimate includes averaging the first channel estimate and the second channel estimate.

13. The method of claim 10 , wherein:

determining the mixed channel estimate based on the first channel estimate and the second channel estimate includes combining the first channel estimate and the second channel estimate such that the mixed channel estimate is configured as if the first received signal and the second received signal were received at the same time by different antennas; and

wherein generating the equalized signal includes:

combining the first received signal and the second received signal to obtain a combined received signal that is configured as if the first received signal and the second received signal were received at the same time by the different antennas; and

performing the equalization, using the mixed channel estimate, with respect to the combined received signal to generate the equalized signal.

14. The method of claim 13 , wherein:

combining the first channel estimate and the second channel estimate includes concatenating, to obtain a combined channel matrix, a first channel matrix that indicates the first channel estimate with a second channel matrix that indicates the second channel estimate;

combining the first received signal and the second received signal includes concatenating, to obtain a combined signal vector, a first signal vector that indicates the first received signal and a second signal vector that indicates the second received signal; and

performing the equalization includes applying the combined channel matrix to the combined signal matrix.

15. The method of claim 9 , wherein determining the mixed channel estimate includes determining an average channel estimate based on an average of a first training signal of the first received signal and a second training signal of the second received signal.

16. A system comprising:

hardware configured to perform operations, the operations comprising:

obtaining a first received signal of a first wireless transmission by a transmitting device of a wireless signal received at a receiving device;

obtaining a second received signal of a second wireless transmission by the transmitting device that is a retransmission of the wireless signal also received at the receiving device;

determining a channel estimate based on one or more of the first received signal or the second received signal;

determining, based on the channel estimate, an equalization of distortion of propagation of the wireless signal between the transmitting device and the receiving device; and

generating an equalized signal based on the determined signal equalization, wherein the equalized signal is an estimate of the wireless signal as transmitted by the transmitting device.

17. The system of claim 16 , wherein determining the channel estimate includes:

determining a first channel estimate based on a first training signal of the first received signal;

determining a second channel estimate based on a second training signal of the second received signal; and

determining the channel estimate based on the first channel estimate and the second channel estimate.

18. The system of claim 17 , wherein determining the channel estimate includes averaging the first channel estimate and the second channel estimate.

19. The system of claim 17 , wherein:

determining the channel estimate based on the first channel estimate and the second channel estimate includes combining the first channel estimate and the second channel estimate such that the channel estimate is configured as if the first received signal and the second received signal were received at the same time by different antennas; and

wherein generating the equalized signal includes:

combining the first received signal and the second received signal to obtain a combined received signal that is configured as if the first received signal and the second received signal were received at the same time by the different antennas; and

performing the equalization, using the channel estimate, with respect to the combined received signal to generate the equalized signal.

20. The system of claim 16 , wherein:

determining the equalization includes:

determining a preliminary equalization of the equalization based on the channel estimate;

determining error correction information associated with the first received signal based on data decoded from the first received signal; and

determining an enhanced equalization based on the determined error correction information; and

wherein determining the equalized signal includes:

performing the preliminary equalization with respect to the second received signal to generate a preliminary equalized signal; and

modifying the preliminary equalized signal based on the enhanced equalization to generate the equalized signal.