| 摘要: |
| 分集技术是对抗多径衰落的一种有效方法，而空时分组码(Space Time Block Code,S
TBC)和最大比合并算法(Maximum Ratio Combining, MRC)是两种常用的分集技术。提出了一
种采用STBC和MRC相结合的算法，在已知信道矩阵〖WTHX〗H〖WTBZ〗的前提下，计算出两种
算法可达到的信噪比，动态选择信噪比较高的方法进行传输，从而提高整个系统的接收信噪
比。通过仿真可以得到，当误比特率为10-3时，混合算法的性能比两种独立算法提高
了3～4 dB。 |
| 关键词: MIMO 最大比合并 正交空时分组码 多天线分集 |
| DOI： |
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| 基金项目: |
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| Performance analysis of multi-antenna communication system based on STBC and MRC |
| XU Lin |
| () |
| Abstract: |
| Diversity technology is widely used since it is efficient in combating
multi-path fading. Space time block codes(STBC) and maximum ratio combining (
MRC) are two efficient diversity technologies. In this paper, an impr
oved algorithm combining STBC and MRC is proposed. The signal-to-noise ratios(
SNR) of the
two technologies are calculated respectively based on the exact channel informa
tion. Then the method with higher SNR is adopted in the transmission to improve
the receiving SNR of the system. Simulation results show that the new algorithm
outperforms STBC and MRC by approximately 3～4 dB at BER 10-3. |
| Key words: MIMO MRC OSTBC multi-antenna diversity |
