The use of discrete references in a random reference correlator (Corresp.)

The performance of a random reference correlator (RRC) having discretely distributed references is examined in terms of its precision. The numerical calculations for Gaussian inputs disclose that a sufficient precision can be achieved with a small number of the reference levels m provided the ratio of the maximum amplitude of the references to the root-mean-square amplitude of the inputs
\eta
is chosen such that
\eta < \sim m
.