A Near-Optimum Multiuser Receiver for STBC MC-CDMA Systems Based on Minimum Conditional BER Criterion and Genetic Algorithm-Assisted Channel Estimation

Performance of MIMO MC-CDMA for STBC Communication System Using OKHA Based Optimal Channel Estimation

“…In figure 1, we can see the proposed OKHA-based MCBER detection and without oppositional KHA based MCBER detection approach and Leandro et al [16] clearly outperform without optimization based MCBER detection. Moreover, the proposed MCBER detection approach is slightly better than the KHA based MCBER detection and Leandro et al [16] method. In figure 3, OKHA minimizes the bit error rate compare to other approach and the bit error rate is lower than 0.2.…”

“…The configuration of the system has two transmitting antennas, one receiver antenna, and two users. In this figure 1, Bit error Probability versus SNR dB, yield by the without optimization based MCBER detection, with krill herd algorithm based MCBER detection, Leandro et al [16] and with OLB krill herd algorithm based MCBER detection. The optimization algorithm is used to optimize the channel matrix.…”

“…To encoding the transmitting signals, here we used Alamouti's spacetime block coding. In this section, we compare our proposed work with different approaches such as KHA based MC-CDMA system, without optimization based MC-CDMA system and Leandro et al [16]. In [16], the author used Genetic Algorithm for channel estimation.…”

“…In this section, we compare our proposed work with different approaches such as KHA based MC-CDMA system, without optimization based MC-CDMA system and Leandro et al [16]. In [16], the author used Genetic Algorithm for channel estimation. But using GA, the author cannot find the optimal solution because using GA No guarantee of finding global maxima and its takes the maximum time for convergence.…”

“…Here, the SNR, [dB] varies from 0 to 20. In this work, we compare our proposed OKHA based MCBER detection with KHA based MCBER detection, Leandro et al [16] and without optimization based MCBER detection. Here, we obtain the symbol error rate is lower than 0.2 thus we can consider the OKHA minimize the SER.…”