Abstract
A method of transmitting a wireless signal (FIGS. 3A-3C) is disclosed. A data stream is divided (306) into a first data stream and a second data stream. The first data stream is encoded (300) at a first data rate. The second data stream is encoded (320) at a second data rate different from the first data rate. A first part of the encoded first data stream is transmitted from a first transmit antenna (308). A second part of the encoded first data stream is transmitted from a second transmit antenna (312).
Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
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Declaration Date | Declaration Reference | Declaring Company | Specification Information | ||||||
4G | 04/04/2008 | ISLD-200804-017 | TEXAS INSTRUMENTS INC | No | Family Member | ||||
Not Available | 25/04/2013 | ISLD-201304-018 | TEXAS INSTRUMENTS INC |
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No | Family Member |
Specification Information
Specification Information
Technologies
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US2006250941A1 | 4G | 04/04/2008 | ISLD-200804-017 | TEXAS INSTRUMENTS INC | Yes | Basis Patent | ||||
US2006250941A1 | Not Available | 25/04/2013 | ISLD-201304-018 | TEXAS INSTRUMENTS INC |
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No | Family Member | |||
US9270410B2 | 4G | 04/04/2008 | ISLD-200804-017 | TEXAS INSTRUMENTS INC | Yes | Basis Patent | ||||
US9270410B2 | Not Available | 25/04/2013 | ISLD-201304-018 | TEXAS INSTRUMENTS INC |
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No | Family Member | |||
US2016173391A1 | 4G | 04/04/2008 | ISLD-200804-017 | TEXAS INSTRUMENTS INC | No | Family Member | ||||
US2016173391A1 | Not Available | 25/04/2013 | ISLD-201304-018 | TEXAS INSTRUMENTS INC |
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No | Family Member |
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Claim
1. A method of transmitting a wireless signal from a wireless transmitter, comprising the steps of:
receiving two data streams;
encoding the first data stream in response to a first channel quality indication;
encoding the second data stream separately from the first data stream in response to a second channel quality indication;
converting a first part of the encoded first data stream to a first symbol;
converting a second part of the encoded first data stream to a second symbol;
multiplying the encoded first and second symbols by a linear basis matrix to produce first and second product symbols; and
transmitting the product symbols from at least two transmit antennas of the wireless transmitter.
2. The method of claim 1, comprising the steps of:
converting a first part of the encoded second data stream to a third symbol;
converting a second part of the encoded second data stream to a fourth symbol;
multiplying the encoded third and fourth symbols by the linear basis matrix to produce third and fourth product symbols; and
transmitting the third and fourth product symbols from the at least two transmit antennas.
3. The method of claim 1, wherein the linear basis matrix is unitary.
4. The method of claim 1, wherein the linear basis matrix is non-unitary.
5. The method of claim 1, wherein at least one of the encoded first and second data steams comprise orthogonal frequency division multiplex (OFDM) symbols.
6. The method of claim 1, wherein the data stream comprises data for at least two different wireless receivers.
7. The method of claim 1, wherein the data stream comprises data for a single wireless receiver.
8. A wireless transmitter, comprising:
a first circuit arranged to process two data streams;
a first encoder circuit arranged to encode the first data stream at a first data rate;
a second encoder circuit arranged to encode the second data stream at a second data rate greater than the first data rate;
a first symbol mapper arranged to produce a first and a second symbol from the first data stream;
a second symbol mapper arranged to produce a third and a fourth symbol from the second data stream; and
a circuit arranged to multiply the encoded first, second, third, and fourth symbols by a linear basis matrix to produce a plurality of product symbols.
9. The wireless transmitter of claim 8, comprising applying the plurality of product symbols to a plurality of transmit antennas.
10. The wireless transmitter of claim 9, wherein the data stream comprises data for at least two different wireless receivers.
11. The wireless transmitter of claim 9, comprising more than four transmit antennas.
12. The wireless transmitter of claim 8, wherein each of the first and second data rates is selected in response to a channel quality indication.
13. The wireless transmitter of claim 8, comprising:
a first interleaver circuit arranged to interleave the first data stream; and
a second interleaver circuit arranged to interleave the second data stream.
14. The wireless transmitter of claim 8, wherein the group circuit applies the plurality of product symbols to a plurality of transmit antennas.
15. The wireless transmitter of claim 8, wherein the linear basis matrix is unitary.
16. The wireless transmitter of claim 8, wherein the linear basis matrix is non-unitary.
17. The wireless transmitter of claim 8, wherein the symbols comprise orthogonal frequency division multiplex (OFDM) symbols.
18. The wireless transmitter of claim 8, wherein the data stream comprises data for a single wireless receiver.
19. A method of receiving a signal at a wireless receiver, comprising the steps of:
receiving at the wireless receiver a plurality of symbols from a plurality of remote transmit antennas;
detecting the plurality of symbols;
receiving a plurality of pilot signals from the remote transmit antennas;
computing an effective channel matrix in response to the received pilot signals;
using the effective channel matrix to process a plurality of product symbols; and
decoding the plurality of product symbols.
20. The method of claim 19, wherein the step of receiving a plurality of symbols comprises receiving a plurality of symbols at a plurality of receive antennas.
21. The method of claim 20, wherein the plurality of receive antennas comprises at least four receive antennas.
22. The method of claim 20, wherein the plurality of receive antennas comprises more than four receive antennas.
23. The method of claim 19, wherein the step of detecting comprises Mean Minimum Square Error (MMSE) detection.
24. The method of claim 19, comprising producing a channel quality indication.
25. The method of claim 19, comprising the steps of:
producing a channel rotation estimate; and
transmitting the channel quality indication and the channel rotation estimate to a remote transmitter.
26. The method of claim 19, wherein the plurality of symbols comprises orthogonal frequency division multiplex (OFDM) symbols.
27. The method of claim 19, wherein the plurality of symbols comprises data for at least two different users.
28. The method of claim 19, wherein the plurality of symbols comprises data for a single user.
29. A wireless transmitter apparatus, comprising:
circuitry for receiving two data streams;
circuitry for encoding the first data stream in response to a first channel quality indication;
circuitry for encoding the second data stream separately from the first data stream in response to a second channel quality indication;
circuitry for converting a first part of the encoded first data stream to a first symbol;
circuitry for converting a second part of the encoded first data stream to a second symbol;
circuitry for multiplying the encoded first and second symbols by a linear basis matrix to produce first and second product symbols; and
circuitry for transmitting the product symbols from at least two transmit antennas of the wireless transmitter.
30. The apparatus of claim 29, comprising:
circuitry for converting a first part of the encoded second data stream to a third symbol;
circuitry for converting a second part of the encoded second data stream to a fourth symbol;
circuitry for multiplying the encoded third and fourth symbols by the linear basis matrix to produce third and fourth product symbols; and
circuitry for transmitting the third and fourth product symbols from the at least two transmit antennas.
31. The apparatus of claim 29, wherein the linear basis matrix is unitary.
32. The apparatus of claim 29, wherein the linear basis matrix is non-unitary.
33. The apparatus of claim 29, wherein at least one of the encoded first and second data steams comprise orthogonal frequency division multiplex (OFDM) symbols.
34. The apparatus of claim 29, wherein the data stream comprises data for at least two different wireless receivers.
35. The apparatus of claim 29, wherein the data stream comprises data for a single wireless receiver.
36. A method of transmitting a wireless signal from a wireless transmitter, comprising the steps of:
receiving at least two transport channels;
encoding the first transport channel to produce a first codeword in response to a first channel quality indicator;
encoding the second transport channel to produce a second codeword in response to a second channel quality indicator, wherein the second encoding is done separately from the first encoding;
mapping the two codewords to two or more layers;
multiplying the layers by a linear basis matrix to produce two or more product symbols; and
transmitting the product symbols from at least two transmit antennas of the wireless transmitter.
37. The method of claim 36, wherein the linear basis matrix is unitary.
38. The method of claim 36, wherein the linear basis matrix is non-unitary.
39. The method of claim 36, wherein at least one of the encoded first and second data steams comprise orthogonal frequency division multiplex (OFDM) symbols.
40. The method of claim 36, wherein the data stream comprises data for at least two different wireless receivers.
41. The method of claim 36, wherein the data stream comprises data for a single wireless receiver.
42. A wireless transmitter apparatus, comprising:
circuitry for receiving at least two transport channels;
circuitry for encoding the first transport channel to produce a first codeword in response to a first channel quality indicator;
circuitry for encoding the second transport channel to produce a second codeword in response to a second channel quality indicator, wherein the second encoding is done separately from the first encoding;
circuitry for mapping the two codewords to two or more layers;
circuitry for multiplying the layers by a linear basis matrix to produce two or more product symbols; and
circuitry for transmitting the product symbols from at least two transmit antennas of the wireless transmitter.
43. The apparatus of claim 42, wherein the linear basis matrix is unitary.
44. The apparatus of claim 42, wherein the linear basis matrix is non-unitary.
45. The apparatus of claim 42, wherein at least one of the encoded first and second data steams comprise orthogonal frequency division multiplex (OFDM) symbols.
46. The apparatus of claim 42, wherein the data stream comprises data for at least two different wireless receivers.
47. The apparatus of claim 42, wherein the data stream comprises data for a single wireless receiver.
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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.