function Phase = CalcPhase(BitVector)
switch BitVector(1)
case 0,
switch BitVector(2)
case 0, % [0,0] case
Phase = pi/4;
case 1, % [0,1] case
Phase = 3*pi/4;
end
case 1,
switch BitVector(2)
case 0, % [1,0] case
Phase = -pi/4;
case 1, %[1,1] case
Phase = -3*pi/4;
end
end