Häger, Christian; Graell i Amat, Alexandre; Alvarado, Alex; Agrell, Erik: Design of APSK Constellations for Coherent Optical Channels with Nonlinear Phase Noise. IEEE Transactions on Communication, 61 (8) pp. 3362-3373.

Alvarado, Alex; Brännström, Fredrik; Agrell, Erik; Koch, Tobias: High-SNR Asymptotics of Mutual Information for Discrete Constellations. IEEE International Symposium on Information Theory (ISIT) 2013, Istanbul, Turkey.

Agrell, Erik; Alvarado, Alex: Signal Shaping for BICM at Low SNR. IEEE Transactions on Information Theory, 59 (4) pp. 2396-2410.

Ivanov, Mikhail; Brännström, Fredrik; Alvarado, Alex; Agrell, Erik: On the Exact BER of Bit-Wise Demodulators for One-Dimensional Constellations. IEEE Transactions on Communication, 61 (4) pp. 1450-1459.

Alvarado, Alex; Graell i Amat, Alexandre; Brännström, Fredrik; Agrell, Erik: On Optimal TCM Encoders. IEEE Transactions on Communication, 61 (6) pp. 2178-2189.

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