An adaptive signal processing system utilizes a pseudo-median cascaded canceller
to compute a set of complex adaptive weights and generate a filtered output signal.
The system includes a plurality of building blocks arranged in a Gram-Schmidt cascaded
canceller-type configuration for sequentially decorrelating input signals from
each other to thereby yield a single filtered output signal. Each building block
includes a local main input channel which receives a local main input signal, a
local auxiliary input channel which receives a local auxiliary input signal, and
a local output channel which sends a local filtered output signal. Each building
block generates a complex adaptive weight which is the sample median value of the
real and imaginary parts of the ratio of local main input weight training data
to local auxiliary input weight training data, and each building block generates
a local output signal utilizing the complex adaptive weight. The effect of non-Gaussian
noise contamination on the convergence MOE of the system is negligible. In addition,
when desired signal components are included in weight training data they cause
little loss of noise cancellation.
