A joint channel and Direction of Arrival (DOA) estimation apparatus and
method simplified to efficiently estimate a channel impulse response
associated with a spatially selective transmission channel occurring in a
mobile radio channel are provided. To uniformly process all directions,
angles associated with a beam are predetermined according to a preset
method. This selection calculates a linear system model with regular
spatial sampling using regular spatial separation of beam angles. The
novel beam forming compensates for a difference between an adaptive array
antenna and a sector type antenna using appropriate beam steering
according to the calculated linear system model, thereby improving
performance and facilitating implementation.