Systems and methods employing multiple input multiple output (MIMO) techniques
First Claim
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1. A system for supporting forward link multi input multi output (MIMO) communications, comprising:
- a plurality of antennas;
a Time Division Multiplexing (TDM) module configured to generate a plurality of TDM slots from a received data stream;
demultiplexing circuitry configured to insert within the plurality of TDM slots a plurality of Orthogonal Frequency Division Multiplexing (OFDM) symbols and associating the TDM slots with a plurality of data sub-streams; and
precoding circuitry configured to associate the plurality of data sub-streams with a plurality of tones, wherein each of the respective tones corresponds to a respective one of the antennas, the plurality of antennas transmitting the plurality of data sub-streams using the plurality of tones.
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Abstract
A system has multiple antennas, a Time Division Multiplexing (TDM) module creating TDM slots, and demultiplexing circuitry inserting within the TDM slots Orthogonal Frequency Division Multiplexing (OFDM) symbols and associating the TDM slots with data sub-streams. The system also includes precoding circuitry associating the data sub-streams with multiple tones. Each of the respective tones corresponds to a respective one of the antennas. The antennas transmit the data sub-streams using the multiple tones.
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Citations
29 Claims
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1. A system for supporting forward link multi input multi output (MIMO) communications, comprising:
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a plurality of antennas; a Time Division Multiplexing (TDM) module configured to generate a plurality of TDM slots from a received data stream; demultiplexing circuitry configured to insert within the plurality of TDM slots a plurality of Orthogonal Frequency Division Multiplexing (OFDM) symbols and associating the TDM slots with a plurality of data sub-streams; and precoding circuitry configured to associate the plurality of data sub-streams with a plurality of tones, wherein each of the respective tones corresponds to a respective one of the antennas, the plurality of antennas transmitting the plurality of data sub-streams using the plurality of tones. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for supporting forward link multi input multi output (MIMO) communications, comprising:
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generating a plurality of Time Division Multiplexing (TDM) slots from a received data stream; associating the plurality of TDM slots with a plurality of data sub-streams; inserting Orthogonal Frequency Division Multiplexing (OFDM) symbols into the TDM slots; processing the TDM slots with the OFDM symbols using a precoding matrix, thereby associating the data sub-streams with a plurality of tones, each of the tones corresponding to a respective one of a plurality of antennas; and transmitting the data sub-streams to a remote unit using the plurality of tones and the plurality of antennas. - View Dependent Claims (13, 14, 15, 16)
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17. A system for supporting forward link multi input multi output (MIMO) communications, comprising:
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a plurality of antennas; means for creating a plurality of TDM slots from a received data stream; means for inserting within the plurality of TDM slots a plurality of Orthogonal Frequency Division Multiplexing (OFDM) symbols and associating the TDM slots with a plurality of data sub-streams; and means for associating the plurality of data sub-streams with a plurality of tones, wherein each of the respective tones corresponds to a respective one of the antennas, the plurality of antennas transmitting the plurality of data sub-streams using the plurality of tones. - View Dependent Claims (18, 19, 20, 21)
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22. A computer program product for supporting forward link multi input multi output (MIMO) communications, tangibly embodying a computer readable medium having computer program logic recorded thereon, the computer program product comprising:
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code that generates a plurality of Time Division Multiplexing (TDM) slots from a received data stream; code that associates the plurality of TDM slots with a plurality of data sub-streams; code that inserts Orthogonal Frequency Division Multiplexing (OFDM) symbols into the TDM slots; and code that processes the TDM slots with the OFDM symbols using a precoding matrix, thereby associating the data sub-streams with a plurality of tones, each of the tones corresponding to a respective one of a plurality of antennas. - View Dependent Claims (23, 24, 25)
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26. A system for supporting forward link multi input multi output (MIMO) communications comprising:
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a plurality of antennas defined within a mobile device and configured to receive a plurality of data sub-streams on a plurality of tones, each of the data sub-streams including; a plurality of Time Division Multiplexing (TDM) slots with Orthogonal Frequency Division Multiplexing (OFDM) symbols therein; a plurality of first pilots possibly overlapping with data in data transmissions; and a plurality of second pilots embedded within the OFDM symbols; circuitry configured; to multiplex the data sub-streams; to decode the data in the data sub-streams; to derive precoding information, spatial multiplexing order information, and data rate information using the first pilots; to detect preambles of packets of the data sub-streams using the second pilots; to demodulate and decode the data sub-streams; and to feed back the precoding information, spatial multiplexing order information, and data rate information to a base station. - View Dependent Claims (27, 28, 29)
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Specification