主权项 |
1. A power-allocation method for transmitting scalable video over MIMO system includes:
encoding a video sequence into L layers; performing modulation and coding schemes (MCSs) to the layers and generating a bit error rate or a symbol error rate respectively for each of the layers after MCSs procedure; decomposing a original problem into L sub-problems and obtaining a candidate power allocation solution by solving each of the sub-problems respectively based on the bit error rate or the symbol error rate of each of the layers and derivative of the bit error rate or the symbol error rate of each of the layers, wherein each of the sub-problems allows up to l (l=1, 2, . . . , L) layers to proceed transmission respectively; and selecting the candidate power allocation solution with the largest quality of experiences as a final power allocation solution of the scalable video transmission over MIMO system, wherein the expression of the optimal power allocation of the scalable video transmission over MIMO system is:p*=argmax{p1*,…,pl*,…pL*}∑k=1Lukf~k(pl*), wherein p* is the optimized power allocation of the scalable video transmission over MIMO system, uk is utility of the kth layer, {tilde over (f)}k(•) is the frame correction rate of the kth layer, and pl* is the optimized power allocation candidate solution of the lth sub-problem. |