Research Article

Performance Analysis of MIMO-STBC Systems with Higher Coding Rate Using Adaptive Semiblind Channel Estimation Scheme

Figure 10

Received constellation for Alamouti’s antenna system with code rate 1 with discriminating levels at SNR 23 dB for 16-QAM modulation with angle 36.89° in (a) and QPSK modulation with angle 8.92° in (b).
304901.fig.0010a
(a)
304901.fig.0010b
(b)