Symbol Rate and Carries Estimation in OFDM Framework: A high Accuracy Technique under Low SNR

TL;DR

This paper introduces a high-accuracy technique for estimating symbol rate and carrier count in OFDM systems operating under low SNR conditions, addressing limitations of existing algorithms.

Contribution

It proposes a novel algorithm that enhances carrier and symbol rate estimation accuracy in low SNR environments by using correlation and FFT methods.

Findings

Reduced error rate in carrier estimation under low SNR

Improved OFDM symbol time estimation accuracy

Enhanced performance over existing algorithms

Abstract

Under a low Signal-to-Noise Ratio (SNR), the Orthogonal Frequency-Division Multiplexing (OFDM) signal symbol rate is limited. Existing carrier number estimation algorithms lack adequate methods to deal with low SNR. This paper proposes an algorithm with a low error rate under low SNR by correlating the signal and applying a Fast Fourier Transform (FFT) operation. By improving existing algorithms, we improve the performance of the OFDM carrier count algorithm. The performance of the OFDM's useful symbol time estimation algorithm is improved by estimating the number of carriers and symbol rate.