| CPC H04L 27/2636 (2013.01) [H03M 13/27 (2013.01)] | 14 Claims |
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1. A method comprising:
generating, by an electronic device, a first user signal comprising a plurality of first samples in the time domain, the plurality of first samples are generated based on a first discrete-time baseband signal and a first predetermined guard period;
performing, by the electronic device, a first discrete Fourier transform (DFT) operation on the plurality of first samples to obtain a plurality of second samples in the frequency domain;
performing, by the electronic device, a first interleaving operation on the plurality of second samples to obtain a plurality of third samples in the frequency domain;
performing, by the electronic device, a first inverse-DFT (IDFT) operation on the plurality of third samples to obtain a plurality of fourth samples in the time domain;
performing, by the electronic device, a first time shifting on the plurality of fourth samples to obtain a plurality of shifted fourth samples;
sending a block transmission using the plurality of shifted fourth samples;
generating a second user signal comprising a plurality of fifth samples in the time domain, the plurality of fifth samples are generated based on a second discrete-time baseband signal and a second predetermined guard period;
performing a second DFT operation on the plurality of fifth samples to obtain a plurality of sixth samples in the frequency domain;
performing a second interleaving operation on the plurality of sixth samples to obtain a plurality of seventh samples in the frequency domain;
performing a second IDFT operation on the plurality of seventh samples to obtain a plurality of eighth samples in the time domain;
performing a second time shifting on the plurality of eighth samples to obtain a plurality of shifted eighth samples; and
generating a multi-user signal based on the plurality of shifted fourth samples and the plurality of shifted eighth samples,
wherein the performing the first time shifting on the plurality of fourth samples comprises:
applying a first time offset to the plurality of fourth samples, and wherein performing the second time shifting on the plurality of eighth samples comprises:
applying a second time offset to the plurality of eighth samples, and wherein the first time offset is different from the second time offset.
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