2‐D DOA estimation for local scattered CDMA signals by modified Fastica in colored non‐Gaussian noise
Ann‐Chen Chang, Chih‐Wei Jen, Ing‐Jiunn Su · Journal of the Chinese Institute of Engineers · 2008
This paper deals with DOA estimation based on the modified fast independent component analysis (FastICA) technique with robust capabilities. The proposed method with linear generalized circular‐type array manifold model can mitigate estimate sensitivity to unknown additive colored non‐Gaussian noise for local scattered CDMA signals. ICA utilizes an approximation of negentropy based on the maximum entropy principle to measure non‐Gaussianity of the data sequences. Several computer simulation results demonstrate the proposed method significantly outperforms MUSIC and signal subspace‐based sequential one‐dimensional searching methods under the scenario of low signal‐to‐noise ratio and colored non‐Gaussian noise.