Abstract
In this article, a novel majorization-minimization (MM)-based time domain pulse compression method (MM-based TDPCM) is proposed for offset quadrature amplitude modulation-based orthogonal frequency division multiplexing (OQAM-OFDM) radar system. We first propose a TDPCM by constructing a general linear model from the time domain with the estimated weights of the OQAM-OFDM signal and solving the model with a whitening operation to complete the pulse compression. The proposed TDPCM greatly reduces the required number of subcarriers for the given range cells and achieves inter range cell interference (IRCI)-free pulse compression. Furthermore, the MM-based TDPCM is proposed to maximize the signal-to-noise ratio (SNR) of the TDPCM. By theoretically analyzing the SNR performance of the TDPCM, we develop an optimization model to design the transmitted weights of the OQAM-OFDM signal. Then, the MM algorithm is proposed to solve the optimization model, realizing the maximum SNR output. Finally, numerical simulation results verify the superior performance of the proposed MM-based TDPCM.
| Original language | English |
|---|---|
| Pages (from-to) | 6480-6489 |
| Number of pages | 10 |
| Journal | IEEE Systems Journal |
| Volume | 16 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 2022 Dec 1 |
Keywords
- Inter-range-cell interference (IRCI)-free
- majorization-minimization (MM)
- offset quadrature amplitude modulation-based orthogonal frequency division multiplexing (OQAM-OFDM) radar system
- time domain pulse compression method (TDPCM)
ASJC Scopus subject areas
- Control and Systems Engineering
- Information Systems
- Computer Science Applications
- Computer Networks and Communications
- Electrical and Electronic Engineering