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TCOM
2008

Lattice codes for amplified direct-detection optical systems

13 years 3 months ago
Lattice codes for amplified direct-detection optical systems
Theories of shaping for lattice codes have been developed for systems (optical or non-optical) using coherent detection with additive white Gaussian noise (AWGN) and for direct-detection optical systems with AWGN. This paper considers shaping for amplified direct-detection optical systems in which signal-spontaneous beat noise, a form of signal-dependent noise, is dominant. An N-dimensional (N-D) signal is formed by modulating the intensities (squares of field magnitudes) of a sequence of N time-disjoint pulses. In field magnitude coordinates, signal energy is represented by a L2 norm, and the optimal constellation bounding region is the nonnegative orthant bounded by an N-sphere. Under a continuous approximation, as N ,
Wei Mao, Joseph M. Kahn
Added 15 Dec 2010
Updated 15 Dec 2010
Type Journal
Year 2008
Where TCOM
Authors Wei Mao, Joseph M. Kahn
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