Patent ID: 8693525

Claim:
An apparatus comprising: at least one processor configured to generate output chips for each of multiple frequency channels, to scale the output chips for a given frequency channel with a gain selected based on a transmit power for the given frequency channel, to digitally upconvert the output chips for each frequency channel to a different frequency and obtain upconverted samples for the frequency channel, and to combine the upconverted samples for the multiple frequency channels to obtain composite samples comprising signals for the multiple frequency channels; and a memory coupled to the at least one processor; wherein digital upconversion of the output chips for each frequency channel comprises digitally filtering and upsampling output chips for each frequency channel using a digital local oscillator signal to obtain filtered samples having a sample rate based on a number of signals simultaneously transmittable, and digitally upconverting the filtered samples for each frequency to obtain the upconverted samples for the frequency channel; and further wherein the at least one processor generates at least one long code, performs spreading of multiple sets of physical layer channels for each of the multiple frequency channels based on the at least one long code, and for each frequency channel, combines spread chips for the multiple sets of physical layer channels to obtain output chips for each frequency channel.