Multi-length ZT DFT-s-OFDM transmission
First Claim
Patent Images
1. A method performed by a network device, the method comprising:
- selecting, by the network device, an allocation of frequency resources for transmission, wherein the allocated frequency resources include a plurality of sub-bands;
assigning, by the network device, one or more of the plurality of sub-bands to each of a plurality of wireless transmit/receive units (WTRUs);
assigning, by the network device, a zero head length and a zero tail length to each of the assigned one or more of the plurality of sub-bands based on one or more patterns;
generating, by the network device, a multi-length zero tail (ZT) discrete Fourier transform-spread orthogonal frequency division multiplexing (DFT-s-OFDM) signal for the assigned one or more of the plurality of sub-bands with a zero head based on the assigned zero head length and a zero tail based on the assigned zero tail length; and
transmitting, by the network device, the multi-length ZT DFT-s OFDM signal.
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Abstract
Techniques may be used to generate a multi-length Zero Tail (ZT) Discrete Fourier Transform-spread Orthogonal Frequency Domain Modulation (DFT-s-OFDM) signal for transmission. A selected allocation of frequency resources may include a plurality of subbands. Subbands may be assigned to wireless transmit/receive units (WTRUs) (i.e., users), and zero head length and zero tail length may be assigned to each of the assigned subbands according to a pattern to combat inter-symbol interference (ISI). The ZT DFT-s OFDM signal may generated for transmission over the assigned subbands in accordance with the assigned zero head length and the assigned zero tail length.
9 Citations
18 Claims
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1. A method performed by a network device, the method comprising:
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selecting, by the network device, an allocation of frequency resources for transmission, wherein the allocated frequency resources include a plurality of sub-bands; assigning, by the network device, one or more of the plurality of sub-bands to each of a plurality of wireless transmit/receive units (WTRUs); assigning, by the network device, a zero head length and a zero tail length to each of the assigned one or more of the plurality of sub-bands based on one or more patterns; generating, by the network device, a multi-length zero tail (ZT) discrete Fourier transform-spread orthogonal frequency division multiplexing (DFT-s-OFDM) signal for the assigned one or more of the plurality of sub-bands with a zero head based on the assigned zero head length and a zero tail based on the assigned zero tail length; and transmitting, by the network device, the multi-length ZT DFT-s OFDM signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A network device comprising:
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a transceiver coupled to a processor and at least one antenna; and the processor is configured to; select an allocation of frequency resources for transmission, wherein the allocated frequency resources include a plurality of sub-bands; assign one or more of the plurality of sub-bands to each of a plurality of wireless transmit/receive units (WTRUs); assign a zero head length and a zero tail length to each of the assigned one or more of the plurality of sub-bands based on one or more patterns; and generate a multi-length zero tail (ZT) discrete Fourier transform-spread orthogonal frequency division multiplexing (DFT-s-OFDM) signal for the assigned one or more of the plurality of sub-bands with a zero head based on the assigned zero head length and a zero tail based on the assigned zero tail length; the transceiver configured to transmit the multi-length ZT DFT-s OFDM signal. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A wireless transmit/receive unit (WTRU) comprising:
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a transceiver coupled to a processor and at least one antenna; the transceiver and the processor are configured to receive a multi-length zero tail (ZT) discrete Fourier transform-spread orthogonal frequency division multiplexing (DFT-s-OFDM) signal; and wherein the multi-length ZT DFT-s-OFDM signal is composed of one or more of a plurality of sub-bands assigned to the WTRU and is composed of a zero head and a zero tail for each of the assigned one or more of the plurality of sub-bands based on one or more patterns. - View Dependent Claims (18)
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Specification