Iterative orthogonal time-frequency-space waveform detection method based on element-by-element external information

• Main Authors: LIU RONGKE, YANG TAO, LI XU
• Format: Patent
• Language: Chinese; English
• Published: 04.11.2022
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

The invention provides an iterative orthogonal time-frequency-space waveform detection method based on element-by-element external information for an orthogonal time-frequency-space system for channel coding, which comprises the following steps of: 1, coding and modulating an orthogonal time-frequency-space signal; 2, demodulating the orthogonal time-frequency-space signals; 3, orthogonal time-frequency-space signal detection and decoding based on element-by-element external information; and 4, performing simulation verification and performance evaluation. According to the invention, the signal detection of the coding OTFS system can be effectively realized. By adopting element-by-element external information, the signal detection performance is close to ideal detection performance, common-mode switching of an OTFS and an OFDM system can be realized, better performance can be obtained in a high-speed mobile environment, and the complexity of the OTFS is not obviously increased compared with that of the OFDM.