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US 7,443,818 B2Granted
Method, apparatus and system of multiple-input-multiple-output wireless communication
AssigneeIntel Corporation
InventorsBoris Ginzburg, Shmuel Levy
Life of this patent
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Abstract
Embodiments of the present invention provide a method, apparatus and system for selectively modulating a data frame of a signal using either a frequency-multiplexing modulation method or a spatial-multiplexing modulation method based on a predetermined criterion.
Claims18
An apparatus comprising:
- a multi-channel modem implementing a frequency-multiplexing modulation method;
- a spatial-multiplexing modem implementing a spatial-multiplexing modulation method;
- and
- a controller to select either said multi-channel modem or said spatial-multiplexing modem to modulate a data-frame of a signal based on a predetermined criterion,
- wherein said multi-channel modem comprises;
- a plurality of channel access control modules able to be assigned to a plurality of individual frequent channels, respectively;
- a plurality of single-input-signal-output encoding modules able to modulate data provided by said plurality of channel access control modules, respectively;
- and
- a plurality of single-input-single-output decoding modules associated with said plurality of access control modules, respectively, and able to demodulate data received from a plurality of radio frequency paths, respectively.
6 more elements
An apparatus comprising:
- a frequency-multiplexing modem implementing a frequency-multiplexing modulation method;
- a space-time coding modem implementing a spatial-multiplexing modulation method;
- and
- a controller to select either said multi-channel modem or said spatial-multiplexing modem to modulate a data-frame of a signal based on a predetermined criterion,
- wherein said space-time coding modem comprises:
- a multiple-input-multiple-output channel access control module able to multiplex the data-frame of said signal to be transmitted into a plurality of parallel sequences;
- and
- a multiple-input-multiple-output encoding module able to encode said parallel sequences and transmit the encoded sequence via a plurality of radio frequency paths.
5 more elements
A wireless device comprising:
- two or more omni-directional antennas able to send and receive signals;
- a frequency-multiplexing modem implementing a frequency-multiplexing modulation method;
- a space-time coding modem implementing a spatial-multiplexing modulation method;
- and
- a controller to select either said frequency-multiplexing modem or said spatial-multiplexing modem to modulate a data-frame of a signal to be transmitted via one or more of said antennas, based on a predetermined criterion,
- wherein said space-time coding modem comprises:
- a multiple-input-multiple-output channel access control module able to multiplex the data-frame of said signal to be transmitted into a plurality of parallel sequences;
- and
- a multiple-input-multiple-output encoding module able to encode said parallel sequences and transmit the encoded sequences via a plurality of radio frequency paths.
6 more elements
A system comprising:
- a first communication device comprising:
- two or more antennas to transmit and receive signals;
- a frequency-multiplexing modem implementing a frequency multiplexing modulation method;
- a space-time coding modem implementing a spatial-multiplexing modulation method;
- a controller to select said frequency-multiplexing modem or said spatial-multiplexing modem to modulate a data-frame of a signal to be transmitted via one or more of said antennas, based on a predetermined criterion;
- wherein, said space-time coding modem comprises:
- a multiple-input-multiple-output channel access control module able to multiplex the data-frame of said signal to be transmitted into a plurality of parallel sequences;
- and
- a multiple-input-multiple-output encoding module able to encode said parallel sequences and transmit the encoded sequences via a plurality of radio frequency paths;
- and
- a second communication device able to receive one or more signals transmitted by said first device.
8 more elements
Dependencies are inferred from the claim text.