Optimized Geometric Constellation Shaping for Wiener Phase Noise Channels with Viterbi-Viterbi Carrier Phase Estimation
Andrej Rode, Wintana Araya Gebrehiwot, Shrinivas Chimmalgi, Laurent, Schmalen
TL;DR
This paper proposes an optimized geometric constellation shaping method combined with a modified Viterbi-Viterbi algorithm to improve carrier phase estimation in Wiener phase noise channels for higher-order modulation formats.
Contribution
It introduces a novel constellation shaping technique tailored for higher-order modulations to enhance phase noise mitigation with the V&V algorithm.
Findings
Improved phase noise estimation accuracy
Enhanced performance for higher-order modulations
Effective integration of constellation shaping with V&V algorithm
Abstract
The Viterbi & Viterbi (V&V) algorithm is well understood for QPSK and 16-QAM, but modifications are required for higher-order modulation formats. We present an approach to extend the standard V&V algorithm for higher-order modulation formats by modifying the transmit constellation with geometric constellation shaping.
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Taxonomy
TopicsOptical Network Technologies · Advanced Wireless Communication Techniques · Advancements in PLL and VCO Technologies