Patent ID: 9608718
Date: 2017-03-28
CPC Classifications: H04B,H04J

Claim:
1. A receiving apparatus for use in a satellite ground terminal that generates in a source-transmitter a digital-data source signal that is modulated to a modulated-source signal and subsequently, filtered and converted to a bandpass signal and distorted in a nonlinear power amplifier to produce a bandpass distorted-interference signal, the receiving apparatus comprising: a receiver filter/sampler with a receiver-timing clock for filtering, with a matched filter, a received signal containing a bandpass desired signal, which has a modulation period of T a synchronizer/sampler for sampling at a rate of 1/T a vector power series generator that produces a power vector with components that depend on the magnitude of the synchronized-interference signal; a source multiplier that multiplies the synchronized-interference signal and the power vector to produce an interference vector; a matched filter that filters the interference vector with the waveform filter to produce a matched-interference vector; a weight generator that produces a vector of distortion weights that depend on the matched-interference vector; a vector processor that produces from the vector of distortion weights a distorted-interference signal that depends on the interference vector; a combiner that sums the distorted-interference signal and the discrete-time receiver signal to produce a residual-interference signal; and a desired-signal demodulator for demodulating the residual-interference signal to produce estimates of the desired-signal digital-data.