% -*- texinfo -*-
% @deftypefn {Function File} {@var{y} = } pskmod (@var{x}, @var{m})
% @deftypefnx {Function File} {@var{y} = } pskmod (@var{x}, @var{m}, @var{phi})
% @deftypefnx {Function File} {@var{y} = } pskmod (@var{x}, @var{m}, @var{phi}, @var{type})
%
% Modulates an information sequence of integers @var{x} in the range
% @code{[0 @dots{} M-1]} onto a complex baseband phase shift keying
% modulated signal @var{y}. @var{phi} controls the initial phase and
% @var{type} controls the constellation mapping. If @var{type} is set
% to 'Bin' will result in binary encoding, in contrast, if set to 'Gray'
% will give Gray encoding. An example of Gray-encoded QPSK is
%
% @example
% @group
% d = randint(1,5e3,4);
% y = pskmod(d,4,0,'Gray');
% z = awgn(y,30);
% plot(z,'rx')
%
% @end group
% @end example
% @end deftypefn
% @seealso{pskdemod}