STBC-VBLAST的QRD-<i>M</i>检测

STBC-VBLAST的QRD-M检测

基金项目:

江苏省科技成果转化专项资金(BA2006076)

详细信息

1.
Institute of Semiconductors of Chinese Academy of Sciences Haidian Beijing 100083;
2.
Institute of Microelectronics of Chinese Academy of Sciences Haidian Beijing 100029

摘要: 提出一种针对IEEE 802.11n中STBC-VBLAST结构的新型QRD-M检测算法，在存活路径拣选过程中，根据接收信号估计值确定备选节点的有限搜索范围，在16-QAM和64-QAM调制下，比常规算法分别减少约70%和90%的运算量，大大降低了VBLAST-STBC数据检测的复杂度，适合于VLSI硬件实现。仿真结果表明，该算法在性能上非常接近于传统QRD-M算法，能够在复杂度和检测性能之间实现折中。
- 检测器 /
- IEEE802.11n /
- 多入多出 /
- QRD-M /
- 空时分组码-垂直贝尔实验室分层空时码
Abstract: A simplified QRD-M algorithm for the IEEE 802.11n STBC-VBLAST is proposed. In order to carry out a limited tree search, each surviving path is expanded only to its partial branches according to the estimation of the symbol to be detected. The proposed scheme can reduce 70% and 90% fundamental operations for 16-QAM and 64-QAM respectively. So the computational complexity is reduced significantly and is more attractive to the VLSI implementation. Simulation results prove that the proposed scheme can achieve a performance very close to the conventional QRD-M algorithm, and yield a tradeoff between the complexity and performance.
- detector /
- IEEE802.11n /
- MIMO /
- QRD-M /
- STBC-VBLAST