Title :
Performance of Regular Low Density Parity Check Codes over Hybrid Optical/RF Channels
Author :
Tapse, Hrishikesh ; Borah, Deva K.
Author_Institution :
Klipsch Sch. of Electr. & Comput. Eng., New Mexico State Univ., Las Cruces, NM
Abstract :
A hybrid channel, consisting of a free space optical (FSO) link and a parallel radio frequency (RF) link, is considered. Information bits are first encoded by a low density parity check (LDPC) code and the coded bits are transmitted through both the FSO and the RF links. A density evolution (DE) technique to analyze the convergence of the message passing algorithm at the detector is described for the hybrid channel, and a Gaussian approximation (GA) technique is presented. Numerical results showing the benefits of the hybrid channel are discussed.
Keywords :
Gaussian processes; microwave links; optical links; parity check codes; Gaussian approximation technique; density evolution technique; free space optical link; hybrid optical/RF channels; parallel radio frequency link; regular low density parity check codes; Atmospheric modeling; Decoding; Gaussian approximation; Message passing; Optical fiber communication; Optical refraction; Optical scattering; Optical variables control; Parity check codes; Radio frequency;
Conference_Titel :
Global Telecommunications Conference, 2008. IEEE GLOBECOM 2008. IEEE
Conference_Location :
New Orleans, LO
Print_ISBN :
978-1-4244-2324-8
DOI :
10.1109/GLOCOM.2008.ECP.771
