The traditional differential space-time block code (DSTBC) suffers from the signal constellation expansion for QPSK modulation.
传统的差分空时分组编码(DSTBC)在QPSK调制时存在着信号星座扩展。
2
The BFD is based on SI modular block, the generalized differentiator(GD) proposed in this paper. Various differential functions can be performed by the GD.
这种BFD是用本文提出的SI模块，通用差分器（GD）构成的，此GD具有多种差分功能。
3
Conclusions An accurate assessment of isthmus block or persistent isthmus conduction is possible with this technique of differential pacing.