Abstract
A wireless receiver ( 74) for receiving signals from a transmitter (72). The transmitter comprises a plurality of transmit antennas (TAT1? TAT2?) for transmitting the signals which comprise respective independent streams of symbols. Additionally interference occurs between the respective streams. The receiver comprises a plurality of receive antennas (RAT1? RAT2?) for receiving the signals as influenced by a channel effect between the receiver and the transmitter. The receiver also comprises circuitry (80) for multiplying the signals times a conjugate transpose of an estimate of the channel effect and times a conjugate transpose of a linear basis transformation matrix. The receiver also comprises circuitry (84) for selecting the linear basis transformation matrix from a finite set of linear basis transformation matrices. Lastly the receiver comprises circuitry (88) for removing the interference between the respective streams.
Technologies
Resource configuration Multiple-Input Multiple-Output(MIMO)/Massive MIMO
Product
User Equipment (UE/Terminal)Base Station (eNB/gNB)
Use Cases
Wireless communication
Services
Multi Antenna Communication System
Claim
1. A method of processing signals in a communication circuit, comprising:
receiving a plurality of signal streams on a plurality of receive antennas from a plurality of transmit antennas coupled to a transmitter;
producing a channel estimate in response to a predetermined signal on the plurality of received signal streams;
selecting a matrix from a finite set of matrices in response to the produced channel estimate; and
multiplying the plurality of received signal streams by a conjugate of a transpose of the produced channel estimate and by a conjugate of a transpose of the selected matrix.
2. A method as in claim 1, further comprising despreading the plurality of received signal streams in response to a code.
3. A method as in claim 1, further comprising removing interference from the plurality of received signal stems.
4. A method as in claim CO, further comprising;
identifying the selected matrix to a remote receiver; and
calculating a product of the produced channel estimate and the selected matrix prior to the multiplying of the plurality of received signal streams by the conjugate of the transpose of the produced channel estimate and by the conjugate of the transpose of the selected matrix.
5. A method as in claim 1, further comprising:
converting a group of the multiplied plurality of signal streams to a serial signal stream;
demodulating the serial signal stream;
deinterleaving the demodulated serial signal stream; and
decoding the deinterleaved serial signal stream.
6. A method as in claim 1, wherein the plurality of received signal streams comprise at least one pilot symbol.
7. A method as in claim 1, wherein the selected matrix is a linear basis transformation matrix.
8. A method as in claim 1, further comprising receiving the plurality of signal streams from a plurality of remote transmit antennas, wherein the plurality of signal streams are encoded differently for each respective antenna of the plurality of transmit antennas.
9. An apparatus, comprising;
circuitry for receiving a plurality of signal streams on a plurality of receive antennas from a plurality of transmit antennas coupled to a transmitter;
circuitry for producing a channel estimate in response to a predetermined signal on the plurality of received signal streams;
circuitry for selecting a matrix from a finite set of matrices in response to the produced channel estimate; and
circuitry for multiplying the plurality of received signal streams by a conjugate of a transpose of the produced channel estimate and by a conjugate of a transpose of the selected matrix.
10. The apparatus as in claim 9, further comprising circuitry for despreading the plurality of received signal streams in response to a code.
11. The apparatus as in claim 9, further comprising circuitry for removing interference from the plurality of received signal streams.
12. The apparatus as in claim 9, further comprising:
circuitry for identifying the selected matrix to a remote receiver; and
circuitry for calculating a product of the produced channel estimate and the selected matrix prior to the multiplying of the plurality of received signal streams by the conjugate of the transpose of the produced channel estimate and by the conjugate of the transpose of the selected matrix.
13. The apparatus as in claim 9, further comprising:
circuitry for converting a group of the multiplied plurality of received signal streams to a serial signal stream;
circuitry for demodulating the serial signal stream;
circuitry for deinterleaving the demodulated serial signal stream; and
circuitry for decoding the deinterleaved serial signal stream.
14. The apparatus as in claim 9, wherein the predetermined signal stream comprises at least one pilot symbol.
15. The apparatus as in claim 9, wherein the selected matrix is a linear basis transformation matrix.
16. The apparatus as in claim 9, further comprising receiving the plurality of signal streams from a plurality of remote transmit antennas, wherein the plurality of signal streams are encoded differently for each respective antenna of the plurality of transmit antennas.
17. An apparatus, comprising:
circuitry for receiving a plurality of signal streams on a plurality of receive antennas;
circuitry for producing a channel estimate in response to a predetermined signal on the plurality of received signal streams;
circuitry for selecting a matrix from a finite set of matrices in response to the produced channel estimate; and
circuitry for multiplying the plurality of received signal streams by a conjugate of a transpose of the produced channel estimate and by a conjugate of a transpose of the selected matrix.
Associated Portfolios
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Note:
The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)
The information in grey was provided by the patent holder
The information in purple was extracted from the FrandAvenue
Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.
Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.
Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.
Family member:related patents or applications that share a common priority or original filing.