Optimized Geometric Constellation Shaping for Wiener Phase Noise Channels with Viterbi-Viterbi Carrier Phase Estimation
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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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