Title :
Adaptive algorithms for noise subspace estimation with application to MC-CDMA
Author_Institution :
Sch. of Electr. & Comput. Eng., Curtin Univ. of Technol., Perth, WA, Australia
Abstract :
In this paper, we propose two new adaptive algorithms for noise subspace estimation and tracking that are based on Rayleigh´s quotient. They have a low computational complexity, a fast convergence, an ensured orthogonality of the subspace vectors, and a good numerical stability. We also show how these algorithms can be used for blind channel estimation in a MC-CDMA system.
Keywords :
adaptive estimation; channel estimation; code division multiple access; computational complexity; noise; MC-CDMA; Rayleigh´s quotient; adaptive algorithm; blind channel estimation; code division multiple access; low computational complexity; noise subspace estimation; subspace vector orthogonality; Adaptive algorithm; Application software; Array signal processing; Australia; Blind equalizers; Convergence of numerical methods; Delay estimation; Iterative algorithms; Multicarrier code division multiple access; Sensor arrays;
Conference_Titel :
Signal Processing and Its Applications, 2003. Proceedings. Seventh International Symposium on
Print_ISBN :
0-7803-7946-2
DOI :
10.1109/ISSPA.2003.1224749
