But OFDM is very sensitive to frequency offset and phase noise, so synchronization is the key problem for OFDM system.
但是OFDM技术对频率偏移和相位噪声很敏感，所以同步是OFDM系统中的关键问题。
It is proved that UV channel is a minimum phase system and can use blind equalizer. Ber is not sensitive to the step size and tap number for CMA blind equalizer.
还证明了紫外信道是最小相位系统，可以进行盲均衡，结果指出，只要迭代次数足够，CMA盲均衡器输出误码率与滤波器阶数、迭代步长关系不是很明显。
This system combines a highly insulated cooler with a liquid nitrogen reservoir so to maintain temperature sensitive samples at vapor phase temperatures.
该冷却器高度绝缘，带有液氮容器，保持样品的气相温度。
After assembling laser ranging system, it would enhance the precision of the opening altitude and increases the attack precision of the terminal phase sensitive ammunition.
把激光测距系统装配于末敏弹母弹，可以提高母弹开仓起爆高度的精确性，提高打击精度。
After assembling laser ranging system, it would enhance the precision of the opening altitude and increases the attack precision of the terminal phase sensitive ammunition.
把激光测距系统装配于末敏弹母弹，可以提高母弹开仓起爆高度的精确性，提高打击精度。
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