Research Article
Performance Analysis of MIMO-STBC Systems with Higher Coding Rate Using Adaptive Semiblind Channel Estimation Scheme
Table 3
Comparison of received constellation for different transmitting antennas with their code rates and required rotation angle.
| Modulation type | Antenna configuration | Code rate | Discriminating SNR level | Required angle | Remarks |
| 16-QAM | | 1 | 23 dB | | Figure 10(a) | QPSK | | 1 | 23 dB | | Figure 10(b) | QPSK | | 1/2 | 35 dB | | Figure 11(a) | QPSK | | 1/2 | 25 dB | | Figure 11(b) | QPSK | | 3/4 | 40 dB | | Figure 12(a) | QPSK | | 3/4 | 30 dB | | Figure 12(b) | QPSK | | 2 | 40 dB | | Figure 13(a) | QPSK | | 2 | 30 dB | | Figure 13(b) |
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