학술논문

Minimum overhead burst synchronization for OFDM based broadband transmission
Document Type
Conference
Source
IEEE GLOBECOM 1998 (Cat. NO. 98CH36250) GLOBECOM 1998 Global Telecommunications Conference, 1998. GLOBECOM 1998. The Bridge to Global Integration. IEEE. 5:2777-2782 vol.5 1998
Subject
Communication, Networking and Broadcast Technologies
Computing and Processing
Components, Circuits, Devices and Systems
Aerospace
OFDM
Frequency synchronization
Training data
Transmitters
Gaussian noise
Signal processing
Performance analysis
Analytical models
Performance loss
Broadcast technology
Language
Abstract
In this paper the subject of training data overhead in burst oriented transmission systems using OFDM is addressed. Previous work has shown that burst synchronization for such scenarios is possible. However, the training data needed in some cases will significantly decrease the usable bandwidth. In order to minimize overhead we analyze the impact of synchronization errors on OFDM and derive a suitable optimization criterion. A novel training data format is introduced that allows to tailor the overhead according to the actual requirements. Using theoretical analysis and simulation the training data overhead can be decreased significantly without loss in performance.