Performance Analysis of MIMO-STBC Systems with Higher Coding Rate Using Adaptive Semiblind Channel Estimation Scheme
Figure 12
Received constellation for OSTBC MIMO antenna systems with code rate 3/4 with discriminating levels at SNR 40 dB and 30 dB for and antenna systems in (a) and (b), respectively, using QPSK modulation technique with angle 1.8° in (a) and 3.2° in (b).