Method for a multi-antenna receiver arrangement, a computer program product, a multi-antenna receiver arrangement, and a wireless device
A method for a multi-antenna receiver arrangement, the multi-antenna receiver arrangement being comprisable in a wireless device, WD, the method comprising: receiving a first plurality of analog radio signals; converting the first plurality of analog radio signals into a first plurality of digital signals; extracting reference signals from each of the first plurality of digital signals; determining characteristics for each of the first plurality of digital signals based on the extracted reference signals; processing the first plurality of digital signals with a second plurality of spatial-temporal filters to obtain a second plurality of combined signals, wherein the first plurality is larger than the second plurality. Corresponding computer program product, multi-antenna receiver arrangement, and wireless device are also disclosed.
1 . A method for a multi-antenna receiver arrangement, the multi-antenna receiver arrangement being comprisable in a wireless device (WD) the method comprising:
receiving a first plurality of analog radio signals; converting the first plurality of analog radio signals into a first plurality of digital signals;
extracting reference signals from each of the first plurality of digital signals;
determining characteristics for each of the first plurality of digital signals based on the extracted reference signals;
utilizing the determined characteristics to determine parameters for a second plurality of spatio-temporal filters; and
processing the first plurality of digital signals with the second plurality of spatio-temporal filters to obtain a second plurality of combined signals, wherein the first plurality is larger than the second plurality.
2 . The method of claim 1 , further comprising:
transforming each of the second plurality of combined signals into a frequency domain; post-processing the transformed signals in the frequency domain to obtain a third plurality of frequency domain processed signals; and
decoding the third plurality of frequency domain processed signals; and wherein the second plurality is larger than the third plurality.
3 . The method of claim 1 , wherein the second plurality of spatio-temporal filters are prefilters.
4 . The method of claim 1 , wherein the second plurality of spatio-temporal filters are combining filters.
5 . The method of claim 4 , wherein the first plurality of analog radio signals are received by a first plurality of receivers/transceivers via a first plurality of antenna units, and wherein each of the combining filters is a one tap filter and wherein each of the one tap filters is associated with the determined characteristics of one of the first plurality of digital signals.
6 . The method of claim 4 , wherein the determined characteristics is one or more of a coefficient, a phase shift, and a delay.
7 . A non-transitory computer-readable storage medium storing one or more programs configured to be executed by one or more processors of a processing device, the one or more programs comprising instructions which, when executed by the processing device, causes the processing device to carry out the method according to claim 1 .
8 . A multi-antenna receiver arrangement, comprising controlling circuitry configured to cause:
reception of a first plurality of analog radio signals;
conversion of the first plurality of analog radio signals into a first plurality of digital signals;
extraction of reference signals from each of the first plurality of digital signals;
determination of characteristics for each of the first plurality of digital signals based on the extracted reference signals;
utilization of the determined characteristics to determine parameters for a second plurality of spatio-temporal filters; and
processing of the first plurality of digital signals with the second plurality of spatio-temporal filters to obtain a second plurality of combined signals, wherein the first plurality is larger than the second plurality.
9 . The multi-antenna receiver arrangement of claim 8 , comprising:
a first plurality of receivers/transceivers configured to receive the first plurality of analog radio signals via a first plurality of antenna units;
a fourth plurality of analog to digital converters configured to convert the first plurality of analog radio signals into the first plurality of digital signals;
an extraction unit configured to extract reference signals from each of the first plurality of digital signals;
a channel analyzer configured to determine characteristics for each of the first plurality of digital signals based on the extracted reference signals; and
the second plurality of spatio-temporal filters configured to process the first plurality of digital signals to obtain a second plurality of combined signals, wherein the first plurality is larger than the second plurality.
10 . The multi-antenna receiver arrangement of claim 9 , further comprising a transform unit configured to transform each of the second plurality of combined signals into a frequency domain.
11 . The multi-antenna receiver arrangement of claim 10 , further comprising a post-processing unit configured to post-process the transformed signals in the frequency domain to obtain a third plurality of frequency domain processed signals.
12 . The multi-antenna receiver arrangement of claim 11 , further comprising a decoder configured to decode the third plurality of frequency domain processed signals.
13 . The multi-antenna receiver arrangement of claim 11 , wherein the second plurality is larger than the third plurality.
14 . The multi-antenna receiver arrangement of claim 10 comprising a chip, the chip comprising the extraction unit, the channel analyzer, the second plurality of spatio-temporal filters and the transform unit.
15 . The multi-antenna receiver arrangement of claim 10 , comprising a first chip, the first chip comprising the channel analyzer, and the transform unit; a second chip, the second chip comprising the extraction unit and the second plurality of spatio-temporal filters; and a digital interface (DI) configured to interface the first and second chips.
16 . The multi-antenna receiver arrangement of claim 11 , comprising a first chip, the first chip comprising the channel analyzer, the transform unit and the post-processing unit; a second chip, the second chip comprising the extraction unit and the second plurality of spatio-temporal filters; and a digital interface (DI) configured to interface the first and second chips.
17 . The multi-antenna receiver arrangement of claim 12 , comprising a first chip, the first chip comprising the channel analyzer, the transform unit, the post-processing unit and the decoder; a second chip, the second chip comprising the extraction unit and the second plurality of spatio-temporal filters; and a digital interface (DI) configured to interface the first and second chips.
18 . The multi-antenna receiver arrangement of claim 10 , further comprising:
a first chip, the first chip comprising the transform unit;
a second chip, the second chip comprising the extraction unit, the channel analyzer, and the second plurality of spatio-temporal filters; and
a digital interface (DI) configured to interface the first and second chips.
19 . The multi-antenna receiver arrangement of claim 10 , further comprising a baseband chip, the baseband chip comprising:
the extraction unit;
the channel analyzer;
the second plurality of spatio-temporal filters; and
the transform unit.
20 . The multi-antenna receiver arrangement of claim 19 , wherein the baseband chip further comprises:
a post-processing unit configured to post-process the transformed signals in the frequency domain to obtain a third plurality of frequency domain processed signals;
a decoder configured to decode the third plurality of frequency domain processed signals; and/or
the fourth plurality of analog to digital converters.