Topic: Communication Systems
Shown signal space diagram is for
(Diagram shows two constellation points on the orthogonal axes $\phi_{1}$ and $\phi_{2}$, specifically at $(A\sqrt{T/2}, 0)$ and $(0, A\sqrt{T/2})$ with a distance of $A\sqrt{T}$ between them.)
- A. Quadrature QPSK
- B. Binary FSK
- C. Bi-Phase PSK
- D. MSK
Answer: B. Binary FSK
Explanation: The diagram displays two orthogonal signals located on the $\phi_{1}$ and $\phi_{2}$ axes. Orthogonal signaling is characteristic of a Binary FSK (BFSK) constellation.