一种基于OFDM系统的发射机参数联合估计方法
By employing training sequences and joint separation algorithms in OFDM systems, the IQ imbalance, nonlinearity, and multipath channel parameters of the transmitter are independently estimated, solving the problem of insufficient accuracy in existing technologies and achieving high-precision transmitter identification and authentication.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- JIANGSU UNIV OF SCI & TECH
- Filing Date
- 2023-02-22
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies cannot accurately and independently estimate the IQ imbalance, nonlinearity, and multipath channel parameters of the transmitter in an OFDM system, thus failing to effectively serve as radio frequency fingerprints for transmitter identification and authentication.
A joint estimation method for transmitter parameters based on OFDM system is adopted. By setting up a transmitter structure with IQ imbalance and nonlinearity, a joint separation algorithm is used with training sequence to independently output the IQ imbalance coefficient, nonlinearity coefficient and multipath coefficient, and use them as radio frequency fingerprint for transmitter identification and authentication.
It achieves high-precision transmitter parameter estimation, which can be effectively used for transmitter identification and authentication, improving estimation accuracy and identification robustness.
Smart Images
Figure CN116389209B_ABST