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Multiple antenna aided OFDM employing genetic algorithm assisted minimum bit error rate multiuser detection

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Figure

Fig. 1.Schematic of an antenna-array-aided OFDM uplink scenario, where each of theis assisted by a L users is equipped with a single transmit antenna and the BS’s receiver P -element antenna front-end.
Fig. 2.An example of the BER cost function surface for subcarrier 62 in theinvariant dispersive Gaussian channel given in Table I at SNRP = 2, L = 2 OFDM SDMA system employing 128-subcarrier in the symbol- = 10 dB.
Fig. 3.Flowchart for the probability error optimization using GA.
Fig. 4.An example of an individual in the GA system represented by the two-is the real part of the weight, anddimensional binary arrays where P is the number of antennas at the receiver, R I is the imaginary part of the weight.
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