Provided are a data modulation method and apparatus, and a storage medium. The method includes: modulating a first data sequence to obtain a second data sequence; inserting a third data sequence into the second data sequence to obtain a fourth data sequence, where each of data, except for a first one and a last one in the fourth data sequence, of the third data sequence in the fourth data sequence satisfies that power of the each datum is equal to average power of two data adjacent to the each datum, and a phase of the each datum is within an angle between the two data adjacent to the each datum; and transmitting the fourth data sequence.

This disclosure describes systems, methods, and devices related to 60 GHz operation. A device may utilize a legacy baseband data for a generation of a plurality of orthogonal frequency-division multiplexing (OFDM) symbols for a 60 GHz communication. The device may select a number of subcarriers based on a bandwidth selection. The device may generate an upclock of the legacy baseband data by an upclocking factor that aligns a first bandwidth with a legacy bandwidth. The device may assign a first subcarrier spacing for a first group of bandwidths. The device may assign a second subcarrier spacing for a second group of bandwidths. The device may generate the plurality of OFDM symbols using an upclocking mechanism based on a bandwidth for the 60 GHz communication. The device may cause to send a plurality of OFDM symbols to a station device.

Aspects of the present application provide methods and devices for time domain implementation of a single carrier waveform such as single carrier quadrature amplitude modulation (QAM) DFT-s-OFDM and single carrier Offset QAM (OQAM). A time domain implementation allows flexible symbol lengths, lower implementation complexity as a large IDFT operation is not required in the time domain and support for variable cyclic prefix (CP) length. An OQAM implementation utilizes a pre-processing step to convert a K complex QAM symbol sequence into a 2K OQAM symbol sequence and generates a sequence for transmission in the time domain as opposed to the frequency domain.

A transmitter includes a mapping circuit and a framing circuit. The mapping circuit is configured to combine and map a first data sequence and a second data sequence onto orthogonal frequency division multiplexing (OFDM) subcarriers which include first subcarriers and second subcarriers. The framing circuit is configured to generate an OFDM signal from the OFDM subcarriers. The mapping circuit is configured to: map first data included in the first data sequence and second data included in the second data sequence onto the first subcarriers; and map the second data onto the second subcarriers. The first data are not mapped on the second subcarriers.

A transmitter includes a mapping circuit and a framing circuit. The mapping circuit is configured to combine and map a first data sequence and a second data sequence onto orthogonal frequency division multiplexing (OFDM) subcarriers which include first subcarriers and second subcarriers. The framing circuit is configured to generate an OFDM signal from the OFDM subcarriers. The mapping circuit is configured to: map first data included in the first data sequence and second data included in the second data sequence onto the first subcarriers; and map the second data onto the second subcarriers. The first data are not mapped on the second subcarriers.

Provided are a data modulation method and apparatus, and a storage medium. The method includes: modulating a data sequence [b(i)] to obtain a data sequence [s(k)]; wherein [s(k)] has the following characteristics: in a case where

[00001]$k=2i,s\left(k\right)=\frac{e^{j\left(\frac{\pi }{2}\left(i\mathrm{mod}2\right)+\theta \right)}}{\sqrt{2}}\left[\left(1-2b\left(i\right)\right)+j\left(1-2b\left(i\right)\right)\right],\mathrm{or}s\left(k\right)=\frac{e^{j\left(\frac{\pi }{2}i+\theta \right)}}{\sqrt{2}}\left[\left(1-2b\left(i\right)\right)+j\left(1-2b\left(i\right)\right)\right];$

in a case where

[00002]