Patent ID: 11909572
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 7:
8. A symbol generation method of generating a preamble symbol, the method comprising:
providing a vector having a front part, a center part and a back part, the center part being arranged in a plurality of consecutive blocks each including a first part and a second part,
inserting in a time domain,
front pilot samples into the front part,
a plurality of consecutive blocks of samples into the center part,
back pilot samples into the back part,

wherein the front pilot samples and the back pilot samples are configured to carry a similar correlation sequence, and
wherein each of the plurality of consecutive blocks of samples is arranged in a first portion and a second portion which are configured to respectively match the first part and the second part of the center part, where each first portion includes pilot samples which are configured to carry a predetermined reference information and where at least one of the second portion includes data samples which are configured to carry signaling data, and
performing a DFT-spread-OFDM modulation of the vector according to a predetermined oversampling rate, wherein
time-domain samples of the vector are converted into the frequency domain by a discrete Fourier transform, DFT, operation, thereby creating frequency-domain samples, and
the frequency-domain samples are converted into the time domain by an inverse discrete Fourier transform, IDFT, operation, thereby creating oversampled time-domain samples.