2D Linear Precoded OFDM for future mobile Digital Video Broadcasting

TL;DR

This paper introduces a 2D spread pilot-based channel estimation method for OFDM in mobile digital video broadcasting, offering improved spectral efficiency and adaptability over traditional schemes.

Contribution

It presents a novel 2D spread pilot technique with analytical MSE expression, demonstrating its effectiveness for future mobile video broadcasting systems.

Findings

Spectral efficiency gain over classical pilot schemes

Effective channel estimation in realistic mobile channels

Analytical MSE expression based on channel autocorrelation

Abstract

In this paper, we propose a novel channel estimation technique based on 2D spread pilots. The merits of this technique are its simplicity, its flexibility regarding the transmission scenarios, and the spectral efficiency gain obtained compared to the classical pilot based estimation schemes used in DVB standards. We derive the analytical expression of the mean square error of the estimator and show it is a function of the autocorrelation of the channel in both time and frequency domains. The performance evaluated over a realistic channel model shows the efficiency of this technique which turns out to be a promising channel estimation for the future mobile video broadcasting systems.