US Patent 7167508 Apparatus and method for estimating angle-of-arrival

An apparatus and method for estimating the angle-of-arrival. The apparatus includes a de-spreading unit, a multipath suppressor, an AOA estimator. The de-spreading unit receives and de-spreads the first and the second spread signals, and outputs the first and the second despread signals. The multipath suppressor receives the first and the second despread signals, suppresses the multipath effects and accordingly outputs the first and the second de-noise signals. The AOA estimator receives the first and the second de-noise signals and outputs the angle-of-arrival accordingly.