= Polyphase sequence
{wiki=Polyphase_sequence}
A polyphase sequence is a method used in signal processing and communication systems for efficiently representing and processing signals. Specifically, it refers to the representation of a signal using multiple phase-shifted components, which are often used in contexts like multirate signal processing, digital filters, and modulation schemes. \#\#\# Key Concepts: 1. **Phases**: In a polyphase representation, a signal is decomposed into several sub-signals (or components) that correspond to different phase shifts.
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