Method for receiving radio signals in a receiving device, and receiving device
Radio signals are received in a receiving device having an internal radio receiver that is designed to carry out a channel estimation for error correction, in the course of a receiving process of the radio signals received in a radio channel. The internal radio receiver communicates with an external radio receiver, which receives the same radio signals as the internal radio receiver at the measuring time, carries out a channel estimation for error correction, and transmits the channel estimation to the internal radio receiver, wherein the internal radio receiver uses the channel estimation of the external radio receiver in order to improve its own channel estimation.
1. A method for receiving radio signals in a receiving device which has an internal radio receiver which is configured to perform as part of processing reception of the radio signals received in a radio channel, a channel estimation for error correction, the method comprising:
at the internal radio receiver, communicating with an external radio receiver;
at the external radio receiver:
at a measuring time, receiving the same radio signals as are received by the internal radio receiver,
performing a channel estimation for error correction, and
conveying the channel estimation to the internal radio receiver; and
at the internal radio receiver, utilizing the channel estimation of the external radio receiver for improving the internal radio receiver's own channel estimation.
2. The method as claimed in claim 1 , characterized in that the internal radio receiver multiplies an inverse transfer function which is obtained from the channel estimation of the external radio receiver and which has been conveyed by the external radio receiver, by a Fourier transform of its own input signal.
3. The method as claimed in claim 1 , characterized in that the internal radio receiver performs correlation calculations in order to harmonize the channel estimation of the external radio receiver with its channel estimation.
4. The method as claimed in claim 1 , characterized in that the internal radio receiver performs autonomous reception processing and checks whether by the autonomous reception processing a better received signal is obtained.
5. The method as claimed in claim 1 , characterized in that the internal radio receiver informs the external radio receiver of the result of a signal decoding performed by the internal radio receiver, the external radio receiver compares this result with the result of a signal decoding performed by the external radio receiver and determines corrections which are conveyed to the internal radio receiver by the external radio receiver.
6. The method as claimed in claim 1 , characterized in that the communication between the internal radio receiver and the external radio receiver only takes place temporarily.
7. The method as claimed in claim 1 , characterized in that the communication between the internal radio receiver and the external radio receiver takes place continuously.
8. The method as claimed in claim 1 , characterized in that the internal radio receiver is installed in a vehicle and determines a relatively long standing time, determines its position and stores an improved channel estimation in a database in a position-related manner.
9. The method as claimed in claim 1 , characterized in that the external radio receiver has access to program content at the measuring time and generates the transmit signal independently.
10. The method as claimed in claim 1 , characterized in that the external radio receiver predicts a transfer function on the basis of a radiowave propagation model on the basis of a terrain and building database at a location of the internal radio receiver.
11. A receiving device for radio reception via an internal radio receiver which is configured to perform a channel estimation for error correction as part of reception processing of the radio signals received in a radio channel and having an external radio receiver which is configured to perform a channel estimation for error correction as part of reception processing of the radio signals received in a radio channel, the receiving device comprising:
the external radio receiver and the internal radio receiver having a communication unit for communication between one another and having in each case a computing unit, the computing units of the internal radio receiver and of the external radio receiver being configured in each case for performing operations comprising:
at the internal radio receiver, communicating with the external radio receiver;
at the external radio receiver:
at a measuring time, receiving the same radio signals as are received by the internal radio receiver,
performing a channel estimation for error correction, and
conveying the channel estimation to the internal radio receiver; and
at the internal radio receiver, utilizing the channel estimation of the external radio receiver for improving the internal radio receiver's own channel estimation.
12. The receiving device as claimed in claim 11 , the internal radio receiver multiplies an inverse transfer function which is obtained from the channel estimation of the external radio receiver and which has been conveyed by the external radio receiver, by a Fourier transform of its own input signal.
13. The receiving device as claimed in claim 11 , the internal radio receiver performs correlation calculations in order to harmonize the channel estimation of the external radio receiver with its channel estimation.
14. The receiving device as claimed in claim 11 , the internal radio receiver performs autonomous reception processing and checks whether by the autonomous reception processing a better received signal is obtained.
15. The receiving device as claimed in claim 11 , the internal radio receiver informs the external radio receiver of the result of a signal decoding performed by the internal radio receiver, the external radio receiver compares this result with the result of a signal decoding performed by the external radio receiver and determines corrections which are conveyed to the internal radio receiver by the external radio receiver.
16. The receiving device as claimed in claim 11 , the communication between the internal radio receiver and the external radio receiver only takes place temporarily.
17. The receiving device as claimed in claim 11 , the communication between the internal radio receiver and the external radio receiver takes place continuously.
18. The receiving device as claimed in claim 11 , the internal radio receiver is installed in a vehicle and determines a relatively long standing time, determines its position and stores an improved channel estimation in a database in a position-related manner.
19. The receiving device as claimed in claim 11 , the external radio receiver has access to program content at the measuring time and generates the transmit signal independently.
20. The receiving device as claimed in claim 11 , the external radio receiver predicts a transfer function on the basis of a radiowave propagation model on the basis of a terrain and building database at a location of the internal radio receiver.