Patent ID: 7110435
Filing Date: 2006-09-19
Classification: H03D,H04B

Abstract:
1. A method for down-converting and de-spreading a received spread spectrum signal, comprising the steps of: (1) receiving the spread spectrum signal having a center frequency that is above baseband; and (2) sampling the received spread spectrum signal according to a control signal resulting in a de-spread baseband signal, wherein said control signal includes a spreading code corresponding to said received spread spectrum signal, said control signal having a center frequency that is selected so as to down-convert said received spread spectrum signal to baseband during said sampling step, wherein step (2) comprises (a) sampling the received spread spectrum signal at a rate that is a sub-harmonic of the received spread spectrum signal, resulting in under-samples; and (b) storing said under-samples in a storage module, wherein successive undersamples form the de-spread baseband signal.