deconvolution in frequency domain

hi please help me on this
x(t)=sin(2*pi*10*t);
w(t)-->awgn noise
y(t)=x(t)*e(j*w(t));
here x is multiplied with e(j*w) in time domain. that is equivalent
to
convolution if frequency domain
how to estimate e(j*w(t))  using deconvolution in frequency domain?