We consider four puncturing schemes for performance studies:
(1) S1 (proposed scheme)—the optimized recoverable pattern
in Table II with the selection of the punctured VNs from
GR (2) S2—the optimized recoverable pattern in Table II with
random selection of the punctured VNs (3) S3—the optimized
distribution without any constraints [3], [4] with the selection of
as many punctured VNs as possible fromGR