WCDMA DPCH/EDCH功率计算

DPDCH/DPCCH

(BetaD_cal/BetaC_cal)^2*L_cal/k_cal = (BetaD_ref/BetaC_ref)^2*L_ref/k_ref

BetaD_cal/Beta = (BetaD_ref/BetaC_ref)*sqrt((L_ref/L_cal)*(k_cal/k_ref))

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EDPDCH/DPCCH

Extrapolation

--保证计算的ETFCI和参考ETFCI（ref-ETFCI）的EbNo相等(另外考虑不同的deltaHARQ):

(BetaEd_cal^2*L_cal)/k_cal = (BetaEd_ref^2*L_ref)/k_ref

=>得到协议的公式：

BetaEd_cal = BetaEd_ref*sqrt((L_ref*k_cal)/(k_ref*L_cal))

 

Interpolation

--根据两个参考的ETFCI的总能量计算出相应ETFCI的能量(线形关系)；

建立一个坐标系，横坐标ｘ为ETFCI对应的bits数目，纵坐标ｙ为ETFCI对应的总的发送能量；(不考虑delta_harq的影响) 

以两个reference ETFCI得到的直线：y1=(betaEd_ref1^2)*L_ref1，y2=(betaEd_ref2^2)*L_ref2

在(x1,y1),(x2,y2)连线上;

计算的相应(x,y)，x\x1\x2通过ETFCI table查表得到；

y=(
aeb4
betaEd_cal^2)*L_cal

y=((x-x1)/(x2-x1))*(y2-y1)+y1

x=k_cal,x1=k_ref1,x2=k_ref2;

y=((k_cal-k_ref1)/(k_ref2-k_ref1))*((betaEd_ref2^2)*L_ref2-(betaEd_ref1^2)*L_ref1)+ (betaEd_ref1^2)*L_ref1

(betaEd_cal^2)*L_cal = ((k_cal-k_ref1)/(k_ref2-k_ref1))*((betaEd_ref2^2)*L_ref2-(betaEd_ref1^2)*L_ref1)+ (betaEd_ref1^2)*L_ref1

(betaEd_cal^2)*L_cal = L_ref1*(((k_cal-k_ref1)/(k_ref2-k_ref1))*((betaEd_ref2^2)*L_ref2/ L_ref1-betaEd_ref1^2)+ (betaEd_ref1^2))

(betaEd_cal^2)*L_cal = L_ref1*(((k_cal-k_ref1)/(k_ref2-k_ref1))*((betaEd_ref2^2)*L_ref2/ L_ref1-betaEd_ref1^2)+ (betaEd_ref1^2))

BetaEd_cal = sqrt(L_ref1/L_cal)*sqrt(((k_cal-k_ref1)/(k_ref2-k_ref1))*((betaEd_ref2^2)*L_ref2/ L_ref1-betaEd_ref1^2)+ (betaEd_ref1^2))

BetaEd_cal = sqrt(L_ref1/L_cal)*sqrt(((k_cal-k_ref1)/(k_ref2-k_ref1))*((betaEd_ref2^2)*L_ref2/ L_ref1-betaEd_ref1^2)+ (betaEd_ref1^2))

BetaEd_cal = sqrt(L_ref1/L_cal)*sqrt(((betaEd_ref2^2)*L_ref2/L_ref1-betaEd_ref1^2)/(k_ref2-k_ref1)*(k_cal-k_ref1)+ betaEd_ref1^2)