Power allocation method for transmitting scalable video over MIMO system

摘要

A power-allocation method for scalable video transmission over MIMO system includes: encoding a video sequence into L layers; performing MCSs to the layers and estimating bit error rate or symbol error rate respectively for each of the layers after MCSs procedure based on channel quality feedbacks from the receiver side; performing power allocations of L sub-problems and obtaining candidate power allocation solution of each of the sub-problems respectively based on bit error rate or symbol error rate of each of the layers and derivative of bit error rate or symbol error rate of each of the layers; and choosing one of the candidate power allocation solution with the largest quality of experiences as the power allocation of the scalable video transmission over MIMO system. This invention considers transmission-error-rate of PHY layer and video coding structure of APP layer and optimizes quality of experiences at user end with cross-layer design.

主权项

1. A power-allocation method for transmitting scalable video over a 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 an optimized power allocation problem into L sub-power allocation problems and obtaining a candidate power allocation solution set by solving each of the sub-power allocation 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-power allocation problems allows up to l(l=1, 2, . . . , L) layers to proceed transmission respectively; and selecting the candidate power allocation solution set with a largest quality of experiences as the optimized power allocation solution of the scalable video transmission over the MIMO system, wherein the expression of the optimized power allocation of the scalable video transmission over the MIMO system is:p*=argmax{p1*,…⁢,pl*,…⁢⁢pL*}⁢∑k=1L⁢uk⁢f~k⁡(pl*),wherein p* is the optimized power allocation of the scalable video transmission over the 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 candidate power allocation solution set of the lth sub-power allocation problem.