doi: 10.7763/IJCTE.2009.V1.42
Low -Complex ICI Reduction Due to Channel Estimation Error in OFDM Systems Using VSB-VBL Technique for High Mobility Applications
- 1Department of ECE, SVCET, Chittoor, India
- 2School of Electrical Sciences, Vellore Institute of Technology, Vellore, India.
Abstract
OFDM based wireless systems are spectrally efficient but they are vulnerable to Inter carrier interference(ICI). The rapid variation of the channel can induce ICI. ICI will significantly increase the difficulty of OFDM channel estimation. ICI due to carrier frequency offset can be mitigated by accurate frequency synchronization but ICI due to fast fading channel is more difficult to handle. This kind of ICI can be easily reduced by increasing the sub carrier spacing. In this paper we proposed an OFDM system which will use Variable Sub carrier Bandwidth (VSB) with Variable Bit Loading (VBL)to minimize the effect of ICI due to channel estimation error. We investigate the performance of such VSB-VBL OFDM system with Fixed Sub carrier Bandwidth (FSB-OFDM) system based on Signal Interference to Noise Ratio (SINR) and Symbol Error Rate (SER).
Keywords
- Channel Estimation Error
- FSB-OFDM
- ICI
- VSB-VBL OFDM
How to Cite
K. Vinoth Babu, K. V. N. Kavitha, and K. Murali Babu, "Low -Complex ICI Reduction Due to Channel Estimation Error in OFDM Systems Using VSB-VBL Technique for High Mobility Applications," International Journal of Computer Theory and Engineering, vol. 1, no. 3, pp. 262-266, 2009. https://doi.org/10.7763/IJCTE.2009.V1.42
Copyright & License
Copyright © 2009 by the authors. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).