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’; where is a symbol taken from a complex constellation s C. 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 ML 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 ML detector to perform the symbol estimation. 13.2.2.2. Transmit Diversity with Array-Interference Gain for 4 antennas Array Gain Maximization Block In the case of 4 TX antennas, there are eight unique Gm together with their respective IAm as well as m wm, {0,1,2,3,4,5,6,7}.
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’; where s is a symbol taken from a complex constellation C. 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 ML 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 ML detector to perform the symbol estimation. 13.2.2.2. Transmit Diversity with Array-Interference Gain for 4 antennas Array Gain Maximization Block In the case of 4 TX antennas, there are eight unique Gm together with their respective IAm as well as wm, m {0,1,2,3,4,5,6,7}.
22-14-0040-01-000b-mimo-full-text-for-the-std-802-22b-standard.docx