Author:
Al-Qadhi Osamah,Semenov E.,Talib Jaber,Almufti Ali,Al-Ghazali Maha
Abstract
Using different precoding matrices, a new blind channel estimation in OFDM systems with cyclic prefix is presented in this paper. The proposed method employs one column of the correlation matrix directly, unlike the traditional precoding techniques where the elements of precoding matrix is been removed. Results show the impact of this method specially when using the type of precoding matrices which include the circulant property in its design. Since channel order estimation is an important task in blind methods, a new and simple algorithm is also investigated with no additional complexity been added to the system. A proof of diagonalizability property is mentioned which can be implemented for other investigations concerning this type of matrices.
Reference16 articles.
1. A Semiblind Channel Estimation Approach for MIMO–OFDM Systems
2. Approach for determining the optimum pilot placement in orthogonal frequency division multiplexing systems
3. Muquet B., Courville M., Duhamel P., IEEE Transactions on Signal Processing 50(7), (2002)
4. Fan W., Gao F., Xue Y., A New Blind Channel Estimation Algorithm for OFDM Systems, International Congress on Image and Signal Processing (IEEE, 2009)
5. Xuejun H., Houjie B., Songyu Yu., A new subspace algorithm of blind channel estimation for OFDM systems, IEEE Proceedings on Personal, Indoor and Mobile Radio Communications, 2003. PIMRC 2003 (IEEE, 2003)