Transmitting and receiving method, device and system for frequency hopping transmission of transform domain modulation system

CN122179283APending Publication Date: 2026-06-09SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
Filing Date
2024-12-06
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Traditional orthogonal frequency division multiplexing (OFDM) technology based on time-frequency domain modulation is difficult to cope with the time-frequency dual-selection fading characteristics of high-speed mobile devices. In-band frequency hopping transmission in OTFS systems leads to a significant reduction in effective transmission bandwidth or transmission rate.

Method used

A transform domain modulation system is adopted, which performs resource mapping in the time-delay Doppler domain and realizes frequency hopping transmission in the Doppler domain. Combined with constellation modulation, time-delay time-domain symbol generation, zero suffix addition, data subframe symbol generation, time-domain pilot symbol sequence and digital baseband subframe symbol generation, radio frequency hopping signal is generated.

Benefits of technology

Achieve broadband frequency hopping anti-interference communication in channel environments with high Doppler spread and long delay spread, effectively estimate the frequency hopping channel, and meet the needs of practical application scenarios.

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Abstract

The application provides a transmitting and receiving method, device and system for frequency hopping transmission of a transform domain modulation system, the transmitting method comprising: generating constellation modulation symbols based on input information bits; generating time-delay time domain symbols based on the constellation modulation symbols; adding a zero postfix to the tail of a column vector of the time-delay time domain symbols to generate extended time-delay time domain symbols; generating data subframe symbols based on the extended time-delay time domain symbols; generating time domain pilot symbol sequences; generating digital baseband subframe symbols based on the data subframe symbols and the time domain pilot symbol sequences; performing up-sampling filtering on the digital baseband subframe symbols to generate digital transmitting subframe symbols; generating radio frequency hopping signals based on the digital transmitting subframe symbols, and transmitting the radio frequency hopping signals. The transmitting and receiving method, device and system for frequency hopping transmission of the transform domain modulation system can realize wideband frequency hopping anti-interference communication in a high Doppler spread and long time-delay spread channel environment.
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