Spectrum shaping method for non-orthogonal waveform and electronic device
AssigneeNtt Docomo, Inc.
InventorsJuan Liu, Wenjia Liu, Xiaolin Hou
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Abstract
The present disclosure provides a spectrum shaping method for non-orthogonal waveforms and an electronic device. The electronic device includes: a processing unit configured to perform discrete Fourier transform spreading on data to be transmitted to obtain a spread signal, perform subcarrier mapping on the spread signal, perform spectrum shaping on subcarriers by using a spectrum shaping factor to obtain a shaped signal, and obtain a non-orthogonal Faster-Than-Nyquist signal according to the shaped signal; and a transmitting unit configured to transmit the non-orthogonal Faster-Than-Nyquist signal.
Claims8
An electronic device, comprising:
- a processing unit configured to perform discrete Fourier transform spreading on data to be transmitted to obtain a spread signal, perform subcarrier mapping on the spread signal, perform spectrum shaping on subcarriers by using a spectrum shaping factor to obtain a shaped signal, and obtain a non-orthogonal Faster-Than-Nyquist signal according to the shaped signal;
- and
- a transmitting unit configured to transmit the non-orthogonal Faster-Than-Nyquist signal,
- wherein
- the spectrum shaping factor includes an amplitude shaping factor,
- the processing unit performs spectrum shaping on the subcarriers by using the amplitude shaping factor, to reduce power of subcarriers truncated due to non-orthogonal Faster-Than-Nyquist modulation.
A spectrum shaping method for non-orthogonal waveforms, comprising:
- performing discrete Fourier transform spreading on data to be transmitted to obtain a spread signal;
- performing subcarrier mapping on the spread signal;
- performing spectrum shaping on subcarriers by using a spectrum shaping factor to obtain a shaped signal;
- obtaining a non-orthogonal Faster-Than-Nyquist signal according to the shaped signal;
- and
- transmitting the non-orthogonal Faster-Than-Nyquist signal,
- wherein
- the spectrum shaping factor includes an amplitude shaping factor,
- performing spectrum shaping on subcarriers by using the spectrum shaping factor to obtain the shaped signal comprises:
- performing spectrum shaping on the subcarriers by using the amplitude shaping factor, to reduce power of subcarriers truncated due to non-orthogonal Faster-Than-Nyquist modulation.
Dependencies are inferred from the claim text.