Linear Equalizer for CPM Modulation with Viterbi Decision

A linear equalizer designed for Continuous Phase Modulation (CPM) systems, utilizing a Viterbi decoder for signal decision-making. In this implementation, the linear equalizer employs adaptive filtering algorithms (such as LMS or RLS) to mitigate intersymbol interference and channel distortions, ensuring accurate signal transmission through compensation of amplitude and phase distortions. The Viterbi decoder implements maximum likelihood sequence estimation (MLSE) to reconstruct the original modulated signal from the received waveform by calculating path metrics through a trellis diagram representation of the CPM signal's phase states. This modulation technique plays a critical role in modern communication systems by enhancing signal reliability through improved error correction capabilities and increasing transmission efficiency through superior spectral efficiency. The equalizer typically involves tap-weight adaptation using error feedback mechanisms, while the Viterbi algorithm processes the equalized output by comparing cumulative metrics across potential state transitions to determine the most probable transmitted sequence.