Blind Joint Estimation of Channel and Direction of Arrival using Antenna Arrays in DS-CDMA Systems
Rodrigo C. de Lamare, Raimundo Sampaio‐Neto · 2006
A blind space-time joint channel and direction of arrival (DOA) estimation method is proposed for DS-CDMA systems. The new method employs a linear antenna array and requires only the signature sequence and timing of the desired user to blindly estimate the channel pa- rameters and the DOA. Two blind algorithms that exploit antenna arrays are also proposed for enhancing the channel estimates. Simulations show the improvements for channel estimation of our method and algorithms over existing techniques and the accuracy achieved for DOA computation.