function x = BitToSymbolStream(B,Nbits);
% x = BitToSymbolStream(B,Nbits);
%
% MSB first

Lb = length(B);
if mod(Lb,Nbits)~=0,
   error('Bitstream length is incompatible with symbol length');
end;

Lx = Lb/Nbits;

x = zeros(1,Lx);
for n = 1:Nbits,
   x = x + 2^(Nbits-n)*B(n:Nbits:Lb);
end;