Multiplexing uplink transmissions with transmit diversity with single carrier waveform
First Claim
1. A method for wireless communication, comprising:
- identifying, at a second user equipment (UE), a first space time block code (STBC) to be used for a first uplink transmission of a first UE;
applying, at the second UE, an orthogonal covering code (OCC) to the first STBC to generate a second STBC to be used for a second uplink transmission of the second UE;
applying the second STBC to at least a portion of an orthogonal frequency division multiplexing (OFDM) symbol to be transmitted in the second uplink transmission; and
transmitting the second uplink transmission concurrently with the first uplink transmission.
1 Assignment
0 Petitions
Accused Products
Abstract
Methods, systems, and devices for wireless communication are described that support multiplexing uplink transmissions with transmit diversity with a single carrier waveform. Two or more UEs may be configured to use space time block codes (STBC) for transmissions using multiple uplink antennas. A first UE may be configured to use a first STBC for a first uplink transmission. An orthogonal cover code (OCC), such as a Walsh code, may be applied to the first STBC to generate a second STBC, and a second UE may use the second STBC for a second uplink transmission. The first UE and the second UE may concurrently transmit the first uplink transmission and the second uplink transmission. The first STBC and the second STBC may be applied across multiple OFDM symbols, or may be applied within an OFDM symbol on a modulated symbol level.
7 Citations
30 Claims
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1. A method for wireless communication, comprising:
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identifying, at a second user equipment (UE), a first space time block code (STBC) to be used for a first uplink transmission of a first UE; applying, at the second UE, an orthogonal covering code (OCC) to the first STBC to generate a second STBC to be used for a second uplink transmission of the second UE; applying the second STBC to at least a portion of an orthogonal frequency division multiplexing (OFDM) symbol to be transmitted in the second uplink transmission; and transmitting the second uplink transmission concurrently with the first uplink transmission. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for wireless communication, comprising:
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identifying a first user equipment (UE) and a second UE that are to transmit concurrent uplink transmissions; configuring the first UE to use a first space time block coding (STBC) for a first uplink transmission; configuring the second UE to use a second STBC for a second uplink transmission, the second STBC generated by applying an orthogonal covering code (OCC) to the first STBC; receiving the first uplink transmission and the second uplink transmission; and decoding the received first uplink transmission and second uplink transmission according to the OCC to produce a first STBC coded portion of the first uplink transmission from the first UE and a second STBC coded portion of the second uplink transmission from the second UE; and space-time block decoding the first STBC coded portion and the second STBC coded portion of the second uplink transmission. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. An apparatus for wireless communication, in a system comprising:
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a processor; memory in electronic communication with the processor; and instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to; identify, at a second UE, a first STBC to be used for a first uplink transmission of a first UE; apply, at the second UE, an OCC to the first STBC to generate a second STBC to be used for a second uplink transmission of the second UE; apply the second STBC to at least a portion of an OFDM symbol to be transmitted in the second uplink transmission; and transmit the second uplink transmission concurrently with the first uplink transmission. - View Dependent Claims (27, 28)
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26. An apparatus for wireless communication, in a system comprising:
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a processor; memory in electronic communication with the processor; and instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to; identify a first UE and a second UE that are to transmit concurrent uplink transmissions; configure the first UE to use a first STBC for a first uplink transmission; configure the second UE to use a second STBC for a second uplink transmission, the second STBC generated by applying an OCC to the first STBC; receive the first uplink transmission and the second uplink transmission; decode the received first uplink transmission and second uplink transmission according to the OCC to produce a first STBC coded portion of the first uplink transmission from the first UE and a second STBC coded portion of the second uplink transmission from the second UE; and space-time block decode the first STBC coded portion and the second STBC coded portion of the second uplink transmission. - View Dependent Claims (29, 30)
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Specification