doi: 10.7763/IJCTE.2010.V2.202
The Effect of Subcarrier-Based Channel Estimation on the BER Bound of Turbo Coded OFDM/SDMA System
Y. Taghinia1
,
G. Dadashzadeh1 ,
E. Jedari2 ,
A. R. Enayati2
- 1Faculty of Engineering, Shahed University, Tehran, Iran.
- 2Communications Technology Institute, Iran Telecom. Research Center (ITRC), Tehran, Iran.
Abstract
In this paper, we study the performance of the channel estimation in a Turbo coded, orthogonal frequency division multiplexing (OFDM) with multiple antennas at the receiver. We survey the accuracy of the channel estimation for different number of users and different number of pilot subcarriers. Moreover, since there is not a closed form solution to the BER of the Turbo coded system for different number ofconstellation size. We develop an equation to obtain the BER bound of the Turbo coded OFDM/SDMA system with M-ary quadrature amplitude modulation (MQAM) in the Rayleigh flat fading channel as a function of the signal constellation and characteristic of the Turbo code with a curve fitting and then propose a method for selecting switching threshold in adaptive modulation case.
Keywords
- component; channel estimation
- OFDM/SDMA systems
- Turbo coding
- BER bound
- adaptive modulation
How to Cite
Y. Taghinia, G. Dadashzadeh, E. Jedari, and A. R. Enayati, "The Effect of Subcarrier-Based Channel Estimation on the BER Bound of Turbo Coded OFDM/SDMA System," International Journal of Computer Theory and Engineering, vol. 2, no. 4, pp. 564-568, 2010. https://doi.org/10.7763/IJCTE.2010.V2.202
Copyright & License
Copyright © 2010 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).