Array Interference IA0 Array Interference IA1 In order to select the most aligned interference, the gain block performs ‘array maximization’ The gain block at the TX directly sends to the vector m ‘array maximization’ collocated ‘transmit selector’ while the gain block at the receiver sends to the collocated For the following m ‘array maximization’ ‘combiner block’. implementation examples co nsider that is represented by 3 bits. m Transmit Vector Selector Block Transmit if is m ‘000’; Transmit if is m ‘001’; Combiner Block Let and denotes transpose operation and the zero-mean additive white Gaussian noise (AWGN). n, If the block receives from the gain block, the received signal is m = 000 ‘combiner’ ‘array maximization’ . The combiner, then, utilizes for the combination. However, for the specific case of m = 000, multiplying vector is not necessary and left wm here for illustration purposes only. The block performs the following combination, ‘combiner’ , which is, then, passed to the MML detector to perform the symbol estimation. If the block receives m = 001, then, ‘combiner’ The combiner, then, utilizes yielding, This is, then, passed to the MML detector to perform the symbol estimation. X.2.1.1.2.2. Transmit Diversity with Array-Interference Gain for 4 antennas
Array Interference IA0 Array Interference IA1 In order to select the most aligned interference, the ‘array gain maximization’ block performs The ‘array gain maximization’ block at the TX directly sends m to the collocated ‘transmit vector selector’ while the ‘array gain maximization’ block at the receiver sends m to the collocated ‘combiner block’. For the following implementation examples co nsider that m is represented by 3 bits. Transmit Vector Selector Block Transmit if m is ‘000’; Transmit if m is ‘001’; Combiner Block Let and denotes transpose operation and n, the zero-mean additive white Gaussian noise (AWGN). If the ‘combiner’ block receives m = 000 from the ‘array gain maximization’ block, the received signal is . The combiner, then, utilizes for the combination. However, for the specific case of m = 000, multiplying vector wm is not necessary and left here for illustration purposes only. The ‘combiner’ block performs the following combination, , which is, then, passed to the MML detector to perform the symbol estimation. If the ‘combiner’ block receives m = 001, then, The combiner, then, utilizes yielding, This is, then, passed to the MML detector to perform the symbol estimation. X.2.1.1.2.2. Transmit Diversity with Array-Interference Gain for 4 antennas