Patent ID: 11916719
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 17:
18. A wireless communication method for a wireless reception device to receive a multiplexed signal from a plurality of wireless transmission devices, wherein
the wireless communication method includes, by each of the plurality of wireless transmission devices:
generating a repetition waveform by repeating a basic waveform of a data frame a plurality of times, the repetition waveform having a length greater than or equal to a frequency conversion length of the wireless reception device, the basic waveform having a length less than the frequency conversion length;
adjusting a symbol at a predetermined position of each basic waveform included in the repetition waveform such that a differentially coded sequence maintains the repetition waveform;
generating a data frame including the repetition waveform and a known signal; and
transmitting a signal including the data frame, and
the wireless communication method includes, by the wireless reception device:
receiving a reception signal transmitted by the plurality of wireless transmission devices, the reception signal being the multiplexed signal;
converting the reception signal multiplexed into a frequency domain signal;
separating the reception signal after frequency conversion into a plurality of signals corresponding one-to-one to the wireless transmission devices;
converting each of the signals separated into a time domain signal; and
decoding a repetition waveform included in the time domain signal obtained through conversion.