Nt1310 Unit 4 Test Paper

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et us assume that $A_{ij}$ is the power received (expressed in dBm)by the frequency band $F_{i}$ at the time $T_{j}$. We have represented the data collected during our spectrum measurement by using a N $ imes$ M matrix designed by L. The matrix L is defined as: %%%%%%%%%%%%%%%%%%%%%%%%%% [ L = [A(F_i,T_j)]= egin{bmatrix} A_{F_1T_1} & A_{F_2T_1} & cdots & A_{F_nT_1} \ A_{F_1T_2} & A_{F_2T_2} & cdots & A_{F_nT_2}\ vdots & vdots & ddots & vdots \ A_{F_1T_m} & A_{F_2T_m} & cdots & A_{F_nT_m} end{bmatrix} ] Where i=1,2, $cdots$, n and j=1,2, $cdots$, m. %$F_{start} leg F_{i} leg F_{stop}; i=1,2, cdots, n$ %$T_start leg T_{j} leg T_stop; j=1,2, cdots, m$ In order to determine the occupancy of a spectrum $F_i$, we have first to …show more content…

C is the matrix of classification and it is defined as follows. $C=[A_c(F_i,T_j)]$ where $A_c(F_i,T_j)$ is obtained by applying the hypothesis test described in equation ef{eq:hypothesistest}. egin{equation} label{eq:hypothesistest} A_c(F_i,T_j)= egin{cases} 1 & quad ext{if} quad A(F_i,T_j) geq lambda \ 0 & quad ext{if} quad A(F_i,T_j)

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