mmWave/THz Channel Estimation Using Frequency-Selective Atomic Norm Minimization

TL;DR

This paper introduces a novel channel estimation method for mmWave and THz systems that leverages frequency-selective atomic norm minimization and prior knowledge of AoD/AoA ranges to enhance accuracy.

Contribution

It proposes a new FS-ANM based channel estimator that utilizes prior AoD/AoA range knowledge for improved mmWave/THz channel estimation.

Findings

Significant performance improvement over existing methods.

Effective utilization of line-of-sight property.

Enhanced estimation accuracy in high-frequency bands.

Abstract

We propose a MIMO channel estimation method for millimeter-wave (mmWave) and terahertz (THz) systems based on frequency-selective atomic norm minimization (FS-ANM). For the strong line-of-sight property of the channel in such high-frequency bands, prior knowledge on the ranges of angles of departure/arrival (AoD/AoA) can be obtained as the prior knowledge, which can be exploited by the proposed channel estimator to improve the estimation accuracy. Simulation results show that the proposed method can achieve considerable performance gain when compared with the existing approaches without incorporating the the strong line-of-sight property.