Patent ID: 7729666

Claim:
A communication system of dynamic space-frequency-division multiple-access for uplink from terminals to a base-station, comprising a base-station and multiple terminals, wherein, the base-station, according to a spatial mapping mode, performs an optimization computation using an optimization function in order to obtain control information for controlling terminals; the user terminal, after receiving the control information, controls the transmitting mode using the control information, wherein, when the spatial mapping mode is the direct mapping, the following equation is used to perform optimization computation: { T [ k , i ] , R [ i ] , C k , p [ k , i ] } = arg ⁢ max { T [ k , i ] , R [ i ] , C k , p [ k , i ] } ⁢ ∑ j = 1 N ⁢ γ j ⁢ ζ j , T [k,i] represents the set of the transmitting antennas used by the K th terminal on the i th subcarrier; R [i] represents the set of the receiving antennas used by the base-station on the i th subcarrier; C k represents the set of the subcarriers used by the K th terminal; p [k,i] represents the transmitting power of the K th terminal on the i th subcarrier; γ k is the priority coefficient the K th user, ζ k ≅ ∑ i ∈ C k ⁢ ( log ⁢ ⁢ det ( K ~ z [ i ] + ∑ j ∈ U i ⁢ ( p [ k , i ]  T [ k , i ]  ⁢ K ~ z ⁡ ( i ) ⁢ H ~ [ k , i ] ⁢ H ~ [ k , i ] H ) ) det ⁡ ( K ~ z [ i ] + ∑ j ∈ U i , j ≠ k ⁢ ( p [ j , i ]  T [ j , i ]  ⁢ H ~ [ j , i ] ⁢ H ~ [ j , i ] H ) ) ) , the constraints are: ∑ i ∈ C k ⁢ p [ k , i ] ≤ P k  C k  ≤ F  R i  ≥ ∑ k ∈ U i ⁢  T [ k , i ]  , where P k represents the overall power of each subcarrier of the K th user; F represents the constraint value of the number of subcarriers; I |R [i] | represents the unit matrix (square matrix) and the size of the matrix is |R [i] |; {tilde over (H)} [k,i] is the submatrix corresponding to the antenna selection according to the channel matrix; K z [i] is the covariance matrix of the noise on the i th subcarrier; {tilde over (H)} [j,i] H is the conjugate transpose of the {tilde over (H)} [j,i] .