Abstract: Disclosed are a signal transmitting method, device and system, and a storage medium. The method includes: transmitting a first signal, the first signal includes at least one of: at least one first structure or at least one second structure. Each first structure includes at least one symbol group, each symbol group in the each first structure includes a cyclic prefix and at least one symbol, or a cyclic prefix, at least one symbol and guard time, and symbols of each symbol group occupy a same subcarrier or a same frequency resource in frequency domain. Each second structure includes at least one symbol group, each symbol group includes a cyclic prefix and at least one symbol, or a cyclic prefix, at least one symbol and guard time, and symbols of each symbol group in the each second structure occupy a same subcarrier or a same frequency resource in frequency domain.

Abstract: The invention provides a microprocessor controlled kiosk printer with a communication interface to a remote host for printing documents, such as receipts and tickets. The printer includes a printer mechanism and an idler roller and a drive roller in engagement for gripping the document. The drive roller is under the control of the microprocessor. Guide plates are provided which, together with the controlled drive roller, prevent access to the document during printing. The controlled drive roller also provides for retracting the document.