Search for: [Description = "Multiple\-input multiple\-output \(MIMO\) systems will play an important role in future generations of wireless networks. Space\-time block code \(STBC\) and space\-time trellis code \(STTC\) are two techniques that may be used in multi\-antenna radio systems. This paper aims, most importantly, to study the performance of STBC systems at different values of such parameters as spectral efficiency, matrix codes and constellations. A performance comparison between STBC and STTC schemes is performed. In order to show the efficiency of the system’s ability to communicate with uncoded and coded transmission structures over AWGN and Rayleigh channels, the trellis\-coded modulation \(TCM\) is introduced. The results obtained show that the proposed TCM\-STBC system model, using one and two receiving antennas, improves the performance of Rayleigh channel communication systems at 9.5 dB and 11.5 dB for a BER of 10−5."]

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