EE SEminar: Spatially Coupled LDLC: New Constructions

Speaker: Svetlana Reznikov

M.Sc. student under the supervision of Prof. Meir Feder

Wednesday, December 14th, 2016 at 15:00

Room 011, Kitot Bldg., Faculty of Engineering

Spatially Coupled LDLC: New Constructions

Low density lattice codes (LDLCs) are designed directly in the Euclidean space. These codes are shown by simulation to approach the Poltyrev capacity. The LDLC uses a lattice with a sparse inverse matrix, which allows a linear complexity decoding. A parametric decoding algorithm makes the memory usage efficient and lowers the computation complexity.

Spatially coupled low density lattice codes (SC-LDLCs) discussed in this talk provide a coded modulation scheme which has a smaller Symbol Error Rate (SER) then the LDLC scheme for every tested block length . These codes are built by coupling some LDLCs, so they also have sparse inverse matrices and the advantages of the LDLC apply to them as well.

In this talk, some new constructions of the spatially coupled low density lattice codes are introduced. All the constructions are decoded using the parametric decoder.