Temporal Orthogonality

1. What is orthogonality in signal?
2. What is orthogonality in digital communication?

What is orthogonality in signal?

In general, a signal set is said to be an orthogonal set if (s_k,s_j) = 0 for all k ≠ j. A binary signal set is antipodal if s₀(t) = −s₁ (t) for all t in the interval [0,T]. Antipodal signals have equal energy E, and their inner product is (s₀,s₁) = −E.

What is orthogonality in digital communication?

Orthogonal signals are used extensively in the communications industry. They range from a simple sine/cosine quadrature signals to multiple signals whose inner product is equal to zero. Orthogonal signals can be used for several different applications.