Study of Timing Synchronization in MIMO-OFDM Systems Using DVB-T

TL;DR

This paper investigates timing synchronization challenges in DVB-T based OFDM systems, proposing a modified Schmidl and Cox algorithm using Cyclic Prefix to improve synchronization accuracy and system performance.

Contribution

It introduces a modified synchronization algorithm tailored for DVB-T OFDM systems and compares its effectiveness through simulations against existing methods.

Findings

The proposed method improves timing synchronization accuracy.

Simulation results show reduced bit error rates.

Cyclic Prefix enhances synchronization robustness.

Abstract

OFDM (Orthogonal Frequency Division Multiplexing)provides the promising physical layer for 4G and 3GPP LTE Systems in terms of efficient use of bandwidth and data rates. This paper highlights the implementation of OFDM in Digital Video Broadcasting-Terrestrial (DVB-T). It mainly focuses on the timing offset problem present in OFDM systems and its proposed solution using Cyclic Prefix (CP) as a modified SC (Schmidl and COX) algorithm. It also highlights the timing synchronization as well as performance comparison through bit error rate. Synchronization issues in OFDM are important and can lead to information loss if not properly addressed. Simulations were performed to implement DVB-T system and to compare different synchronization methods under certain distribution model.