Rate-Adaptive Coded Modulation for Fiber-Optic Communications

Rate-adaptive optical transceivers can play an important role in exploiting the available resources in dynamic optical networks, in which different links yield different signal qualities. We study rate-adaptive joint coding and modulation, often called coded modulation (CM), addressing non-dispersio...

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Vydáno v:	Journal of lightwave technology Ročník 32; číslo 2; s. 333 - 343
Hlavní autoři:	Beygi, Lotfollah, Agrell, Erik, Kahn, Joseph M., Karlsson, Magnus
Médium:	Journal Article
Jazyk:	angličtina
Vydáno:	New York, NY IEEE 15.01.2014 Institute of Electrical and Electronics Engineers
Témata:	Applied sciences Circuit properties Complexity theory Electric, optical and optoelectronic circuits Electronics Exact sciences and technology Fiber-optic communications four-dimensional set partitioning Information, signal and communications theory Integrated optics. Optical fibers and wave guides Labeling Modulation Modulation, demodulation non-dispersion managed links nonlinear channel model Optical and optoelectronic circuits Optical fiber communications Optical telecommunications Optoelectronic devices Parity check codes Probabilistic logic probabilistic shaping rate-adaptive coded modulation Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices Signal and communications theory Signal to noise ratio Telecommunications Telecommunications and information theory Performance evaluation Integrated optics Parameter estimation four-dimensional set partitioning Fiber-optic communications Digital processing Adaptive method Addressing nonlinear channel model Fiber optics Optical fiber network Channel estimation Optical receiver Traffic control Parity check codes Optical fiber communication Electronic dispersion compensation Adaptive modulation Optical fiber Probabilistic approach Flow rate regulation Teletraffic Electrooptical device non-dispersion managed links Optical transmitters Adaptive coding Integrated circuit Signal processing probabilistic shaping Optical dispersion compensation Long distance transmission Digital signal processor rate-adaptive coded modulation
ISSN:	0733-8724, 1558-2213, 1558-2213
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Popis
Shrnutí:	Rate-adaptive optical transceivers can play an important role in exploiting the available resources in dynamic optical networks, in which different links yield different signal qualities. We study rate-adaptive joint coding and modulation, often called coded modulation (CM), addressing non-dispersion-managed (non-DM) links, exploiting recent advances in channel modeling of these links. We introduce a four-dimensional CM scheme, which shows a better tradeoff between digital signal processing complexity and transparent reach than existing methods. We construct a rate-adaptive CM scheme combining a single low-density parity-check code with a family of three signal constellations and using probabilistic signal shaping. We evaluate the performance of the proposed CM scheme for single-channel transmission through long-haul non-DM fiber-optic systems with electronic chromatic-dispersion compensation. The numerical results demonstrate improvement of spectral efficiency over a wide range of transparent reaches, an improvement over 1 dB compared to existing methods.
ISSN:	0733-8724 1558-2213 1558-2213
DOI:	10.1109/JLT.2013.2285672