Reconstruction of the layered multimedia at the receiver is based on the consecutive correctly recovered layers until the first unrecovered one.
We note that the two phases may overlap in time, i.e., the BS may start broadcasting a subset of (already recovered) layers of x BS before the upload phase of all users is completed.
From the set of recovered layers, the BS creates its own message x BS) which is broadcasted back to the users over the broadcast downlink channel during the broadcast phase of duration T dl.
Lastly the message blocks are recovered layer-by-layer at the decoders.
Therefore, to recover layered data stream progressively from Layer 1 to Layer L, we can make k 1 ∗ ≤ k 2 ∗ ≤ ⋯ ≤ k L ∗. From Equation (1), we know that it can be also represented by r1≤r2≤⋯≤r L. So we can protect Layer i by assigning suitable r i, expecting to recover it after receiving r i ratio of output symbols.
By assigning unequal redundant packets to each layer with their importance, the PRC can recover layered multimedia at designated received ratio of output symbols, which outperforms the other unequal protected rateless codes such as SP-FEC and LA-FEC in [21] with much lower overhead.
The virus fraction was recovered, layered on a 30-60% (w/v) CsCl gradient and centrifuged at 40,000 rpm for 18 h in a Beckman SW41 rotor.
For reconstruction, LDHs are pretreated in mild temperature to produce mixed metal oxide, M II 1− x M III) x O(2+ x )/2, which then recovers layered LDH structure upon addition of water and intended anions.
As determined by immunohistochemistry, higher expression levels of Itga5 and Sirt1 were also detected in the recovering endothelial layer of the Tie2-Cre;miR-92a(fl/fl -mice fl/fl -miceascular injury.
As all diagnostic intrusions were of a recent Holocene chronology, the original study of the site assumed that all the lithics recovered in layers 1 and 2D related to the human occupation documented by the assemblage recovered in situ in layer 2 of rows 11 12 (no lithics were found in squares M13-14).
