Pilot-Aided Trellis-Based Demodulation

被引：17

作者：

Barletta, Luca ^{[1
]}

Bergamelli, Federico ^{[2
]}

Magarini, Maurizio ^{[2
]}

Carapellese, Nicola ^{[2
]}

Spalvieri, Arnaldo ^{[2
]}

机构：

[1] Tech Univ Munich, Inst Adv Study, D-80333 Munich, Germany

[2] Politecn Milan, Dipartimento Elettron Informaz & Bioingn, I-20133 Milan, Italy

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2013年 / 25卷 / 13期

关键词：

Coherent communication; phase noise; channel capacity; information rate; FEEDFORWARD CARRIER RECOVERY; COHERENT OPTICAL-SYSTEMS; M-QAM CONSTELLATIONS; PHASE NOISE; TRANSMISSION; MODULATION; IMPACT;

D O I：

10.1109/LPT.2013.2261290

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In optical transmission systems based on high-order modulations, the impact on system performance of Wiener phase noise affecting the received carrier phase can be relevant. To make less severe phase noise effects, solutions based on the use of known pilot symbols, that aid carrier phase recovery, have been recently introduced. This letter proposes a pilot-aided demodulation scheme where the memory of phase noise is dealt with by a trellis-based demodulation algorithm. The benefits in terms of achievable information rate and bit error rate compared to adversary schemes are demonstrated by computer simulations for strong phase noise with 4-ary quadrature amplitude modulation (4-QAM) and 16-QAM.

引用

页码：1234 / 1237

页数：4

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