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We present an M-ary spectral amplitude code (SAC) modulation technique to improve the performance of free-space optical (FSO) communication systems. Although this approach can be used in any dispersive FSO system, in this paper we focus on non-line of sight (NLOS) ultraviolet (UV) systems relying on atmospheric scattering. Spectral amplitude encoding is applied on a broadband UV source using the same...
In this paper we develop receiver design techniques for shot noise limited multiple-input multiple-output (MIMO) systems, specifically 2×2 MIMO non-line-of-sight (NLOS) free space optical (FSO) or ultraviolet (UV) communication systems, to illustrate the spatial multiplexing advantage of using a MIMO technique. The receivers considered are the zero forcing receiver, the minimum mean square error (MMSE)...
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