Configurable correlator bank for a non-coherent DSSS demodulator

A method for demodulating one or more received signals comprising:

• configuring a correlator bank into a plurality of configurations to correlate function transformations of one or more received symbols, the plurality of configurations including a signal arrival configuration, a coarse timing configuration, and a despreading configuration;
• receiving phase information in a function transformations block;
• generating the function transformations in the function transformations block, the function transformations including a one chip differential, additional transformations that include respective multi-chip differentials, an average transformation that includes an average of a one-chip phase difference between two adjacent samples of a signal, and a second order phase differentiation used for frequency deviation correlation;
• and
• supplying the function transformations to the correlator bank.

A demodulator comprising:

• a correlator bank including a plurality of correlators, the correlator bank configurable into a plurality of configurations including a signal arrival configuration, a coarse timing configuration, and a despreading configuration, to correlate function transformations of one or more respective received symbols to template signals;
• wherein each of the correlators includes a plurality of elements, and each of the plurality of elements includes a plurality of delay blocks corresponding to a number of chips in a symbol, a multiply function coupled to multiply an output of each of the delay blocks by one bit of a template signal, and a summation block to sum an output of the multiply function and supply an element output;
• and
• a function transformations block coupled to receive phase information from a Cordic and to generate the function transformations and supply the function transformations to the correlator bank, the function transformations block to generate a first transformation that includes a one chip differential, additional transformations that include respective multi-chip differentials, an average transformation that includes an average of a one-chip phase difference between two adjacent samples, and a second order phase differentiation used for frequency deviation correlation.