Abstract
A method and apparatus for generating and transmitting modulation signals includes generating a plurality of modulation signals each of which is to be transmitted from a different one of a plurality of antennas. Each modulation signal includes a pilot symbol sequence and/or a pilot subcarrier including a plurality of pilot symbols used for demodulation. Each of the pilot symbol sequences and/or pilot subcarriers is inserted at the same temporal point in each modulation signal. The pilot symbol sequences and/or pilot subcarriers are orthogonal to each other each pilot symbol having a non-zero amplitude. The quantity of the plurality of pilot symbols in each pilot symbol sequence and/or pilot subcarrier is greater than a quantity of the plurality of modulation signals to be transmitted. The plural modulation signals are transmitted from the plurality of antennas in an identical frequency band. Each modulation signal includes different transmission data and one of the pilot symbol sequences and/or pilot subcarriers.
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| Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
|---|---|---|---|---|---|---|---|---|---|
| Declaration Date | Declaration Reference | Declaring Company | Specification Information | ||||||
| 4G | 16/07/2009 | ISLD-200907-006 | PANASONIC CORP | No | Family Member | ||||
| 4G | 16/03/2010 | ISLD-201004-003 | PANASONIC CORP | No | Family Member | ||||
| 4G | 21/07/2014 | ISLD-201410-007 | WI-FI ONE LLC | No | Family Member | ||||
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|---|---|---|---|---|---|---|---|---|---|---|
| Declaration Date | Declaration Reference | Declaring Company | Specification Information | |||||||
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| Publication No | Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | Status | National Phase Entries | |||||
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S1
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Technologies
Measurement
Product
Not Available
Use Cases
Wireless communication
Services
Not Available
Claim
1. A method of transmitting modulation signals, the method comprising:
generating a plurality of modulation signals each of which is to be transmitted from a different one of a plurality of antennas,
wherein each modulation signal includes a pilot symbol sequence and/or a pilot subcarrier including a plurality of pilot symbols used for demodulation;
inserting each of the pilot symbol sequences and/or pilot subcarriers at a same temporal point in each modulation signal,
wherein the pilot symbol sequences and/or pilot subcarriers are orthogonal to each other, each pilot symbol having a non-zero amplitude,
a quantity of the plurality of pilot symbols in each pilot symbol sequence and/or pilot subcarrier being greater than a quantity of the plurality of modulation signals to be transmitted; and
transmitting in an identical frequency band the plurality of modulation signals, each including different transmission data and one of the pilot symbol sequences and/or pilot subcarriers, from the plurality of antennas.
2. The method of claim 1, further comprising using the plurality of pilot symbols for estimating a frequency offset and/or for synchronization.
3. The method of claim 1, wherein the plurality of pilot symbols used for demodulation each include real or complex numbers.
4. The method of claim 1, wherein each of the plurality of modulation signals comprises a frame.
5. The method of claim 1, further comprising transmitting the plurality of modulation signals by a transmitting apparatus that includes the plurality of antennas.
6. The method of claim 1, wherein the plurality of modulation signals comprise data symbols.
7. The method of claim 1, wherein a quantity of pilot symbol sequences and/or pilot subcarriers used for demodulation is at least four.
8. A signal generation apparatus configured to generate modulation signals, the apparatus comprising one or more processing devices configured to:
generate a plurality of modulation signals each of which is to be transmitted from a different one of a plurality of antennas,
wherein each modulation signal includes a pilot symbol sequence and/or a pilot subcarrier including a plurality of pilot symbols used for demodulation;
insert each of the pilot symbol sequences and/or pilot subcarriers at a same temporal point in each modulation signal,
where the pilot symbol sequences and/or pilot subcarriers are orthogonal to each other, each pilot symbol having a non-zero amplitude, a quantity of the plurality of pilot symbols in each pilot symbol sequence and/or pilot subcarrier being greater than a quantity of the plurality of modulation signals to be transmitted; and
output the plurality of modulation signals, each comprising different transmission data and one of the pilot symbol sequences and/or pilot subcarriers, to the plurality of antennas.
9. The signal generation apparatus in claim 8, further comprising a transmitter configured to transmit the output modulation signals from the plurality of antennas.
10. The signal generation apparatus in claim 8, wherein the plurality of pilot symbols used for demodulation each include real or complex numbers.
11. The signal generation apparatus in claim 8, wherein each of the plurality of modulation signals comprises a frame.
12. The signal generation apparatus in claim 8, wherein the plurality of modulation signals comprise data symbols.
13. The signal generation apparatus in claim 8, wherein a quantity of pilot symbol sequences and/or pilot subcarriers used for demodulation is at least four.
Associated Portfolios
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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.
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