Performance of Multi-User Wireless System over QO-STFBC OFDMA
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With brisk growth of wireless communication system Multi Input Multi Output (MIMO) technology emerging as promising solution to the increment of system demand capacity. So, the MIMO give a solution to increase the data rate with out increment of transiting power or the channel bandwidth.Several method are conducting with the MIMO to increase the channel capacity such as; Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA) and Code Division Multiple Access (CDMA). In this work, the Orthogonal Space Time Block Code (O-STBC) MIMO Orthogonal Frequency Division Multiplex...
With brisk growth of wireless communication system Multi Input Multi Output (MIMO) technology emerging as promising solution to the increment of system demand capacity. So, the MIMO give a solution to increase the data rate with out increment of transiting power or the channel bandwidth.Several method are conducting with the MIMO to increase the channel capacity such as; Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA) and Code Division Multiple Access (CDMA). In this work, the Orthogonal Space Time Block Code (O-STBC) MIMO Orthogonal Frequency Division Multiplexing (OFDM) system over flat fading channel is presented as the litterateur work.The QO-STFBC over OFDMA proposed to solve the incapability of O-STBC over selective frequency channel and to exployed the frequency diversity. The obtained results by using Matlab program showed the enhancement of the capacity.The QO-STFBC system examined over frequency selective channel,with 4 Tx and 4 Rx where are the SNR equal to 7dB and the obtained BER is 10-6.
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