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Joint Range and Doppler Estimation Using Spectrally Efficient FDM
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DOI：10.1109/TWC.2026.3658942.png)
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Abstract
En 中文
This paper explores the use of data modulated by a spectrally efficient frequency division multiplexing (SEFDM) waveform for sensing. We first show that, if the presence of a cyclic prefix is assumed in the transmitted signal, the problem of multiple target sensing is tantamount to the detection and estimation of an unknown number of complex two-dimensional complex tones. Then, a novel iterative estimation method, based on a maximum likelihood approach, is developed to solve the last problem. Our simulation results evidence that SEFDM represents a valid technical option over static or slowly varying channels, and that the proposed method achieves a better accuracy-complexity trade-off than other estimation techniques available in the technical literature. In particular, our numerical results show that, in various scenarios, the proposed method achieves a 15%–50% improvement in estimation accuracy with respect to other techniques with a limited computational complexity.
Keywords:
Cyclic prefix
maximum likelihood estimation
orthogonal frequency division multiplexing
spectral efficiency
radar processing
Journal
IF:
10.7
Papers:
1.3W
Citations:
5.3W