Patent ID: 7733945

Claim:
A method of compensating for induced doppler phase errors while communicating through a multiple access spread spectrum communication interface, the method comprising: receiving a first signal at a receiver, wherein the first signal is spread using a predetermined pseudo-noise (PN) code; dividing the first signal into a plurality of first smaller coherent units; summing across each of the plurality of first smaller coherent units to produce a plurality of first coherent sums; summing non-coherently the plurality of first coherent sums to detect a magnitude of the first signal; selecting a coherent integration length based on the magnitude of the first signal to configure a demodulation; receiving a second signal at the receiver, wherein the second signal is spread using the predetermined pseudo-noise (PN) code; dividing the second signal into a plurality of second smaller coherent units; and demodulating a first symbol from the plurality of first smaller coherent units and the plurality of second smaller coherent units comprises cross multiplying the complex conjugate of a unit of the first smaller coherent units with a unit of the second smaller coherent units.