Multicarrier transmitter and method for transmitting multiple data streams with cyclic delay diversity
AssigneeIntel Corporation
InventorsSumeet Sandhu, Minnie Ho
Life of this patent
Estimating the term…
Abstract
A multicarrier transmitter may transmit cyclically delayed linear combinations of two or more data streams with three or more antennas. In some embodiments, the multicarrier transmitter may transmit cyclically delayed linear combinations of three data streams with four antennas.
Claims46
A multicarrier transmitter comprising:
- inverse fast Fourier transformation (IFFT) circuitry to generate first and second time-domain samples;
- and
- cyclic shifting and combining circuitry to cyclically shift and combine the first and second time-domain samples for subsequent transmission.
A method for transmitting multicarrier communication signals comprising:
- cyclically shifting first time-domain samples;
- and
- combining the cyclically-shifted first time-domain samples with second time-domain samples for subsequent transmission.
A method comprising transmitting multicarrier communication signals comprising cyclically shifted linear combinations of two or more data streams using two or more antennas.
A method comprising:
- transmitting time-domain samples without a cyclical shift on a first antenna;
- transmitting a first cyclically shifted version of the time-domain samples on a second transmit antenna;
- and
- transmitting a second cyclically shifted version of the time-domain samples on a third transmit antenna,
- wherein the first cyclically shifted version of the time-domain sample are cyclically shifted by a first cyclical delay, and wherein the second cyclically shifted version of the time-domain samples are cyclically shifted by a second cyclical delay.
A method comprising concurrently transmitting:
- first time-domain samples without a cyclical shift on a first antenna;
- a cyclically shifted version of the first time-domain samples on a second transmit antenna;
- second time-domain samples without a cyclical shift on a third antenna;
- and
- a cyclically shifted version of the second time-domain samples on a fourth transmit antenna.
A system comprising:
- a plurality of omnidirectional antennas;
- inverse fast Fourier transformation (IFFT) circuitry to generate first and second time-domain samples;
- and
- cyclic shifting and combining circuitry to cyclically shift and combine the first and second time-domain samples for subsequent transmission by the antennas.
A machine-readable medium that provides instructions, which when executed by one or more processors, cause the processors to perform operations comprising transmitting multicarrier communication signals comprising cyclically shifted linear combinations of two or more data streams using two or more antennas.
A method comprising:
- transmitting a plurality of data streams on a plurality of antennas,
- wherein the number of data streams is less than the number of antennas, and
- wherein at least one of the data streams is cyclically shifted for transmission on at least one of the antennas.
Dependencies are inferred from the claim text.