Constellation point meaning

Each symbol is encoded as a different combination of amplitude and phase of the carrier, so each symbol is represented by a point on the constellation diagram, called a constellation point. The constellation diagram shows all the possible symbols that can be transmitted by the system as a collection of points.

1. What is constellation in BPSK?
2. Why do we use constellation diagram?
3. What is a constellation modulation?
4. What is Euclidean distance in the constellation diagram?

What is constellation in BPSK?

Constellation Diagram of BPSK The simplest form of PSK is binary phase-shift keying (BPSK), where N = 1 and M = 2. Therefore, with BPSK, two phases (21 = 2) are possible for the carrier. One phase represents a logic 1, and the other phase represents a logic 0.

Why do we use constellation diagram?

The constellation diagram is useful because it displays both the ideal (reference) signal and the actual measured signal on the same plot. The ideal signal locations of a constellation diagram are pre-defined generically depending on the modulation format chosen.

What is a constellation modulation?

Constellation modulation is the art of encoding information not only in the symbols within a constellation but also by encoding information by selecting a constellation from a set of constellations that are switched from time to time.

What is Euclidean distance in the constellation diagram?

The symbols denoted in Figure 1.5 are for a 8-PSK constellation, which means that it will have 8 signal points, labeled from S0 to S7. The Euclidean distance for this sequence is the distance between each symbol in this sequence and a reference sequence.