Patent ID: 7050483

Claim:
A method for receiving a DS-CDMA signal having in-phase and quadrature component waveforms each modulated by a pseudo-noise code of length M chips so that M chips, with each chip of the M chips having one or more data samples that are each comprised of one or more quantized bits, represent one information bit, said method comprising; converting said in-phase component waveform into a first sequence of data samples; converting said quadrature component waveform into a second sequence data samples; selecting one or more data samples of each of the M chips and one or more quantized bits from each selected data sample from the first or second sequence of data samples to obtain a data sequence; processing said data sequence to determine if a signal is present in the DS-CDMA signal; and if a signal is present: collecting a predetermined number of samples from said first and second sequences of data samples; and decoding a predetermined number of samples from said first and second sequences of data samples to recover information from the DS-CDMA signal; wherein said first and second sequences of data samples are stored continuously in a circular buffer until a signal is detected in the DS-CDMA signal and a predetermined number of samples from said first and second sequences of data samples have been collected.