quasi-particle spectrum

Then the different channel models for multiplex antenna systems are given. And the system capacities for single user and multiuser multi-antenna systems are analyzed. A new improved quasi-orthogonal inserted Walsh codes method is proposed, which makes the code number for spreading spectrum system greatly increased.

介绍了多天线信道不同建模方法，给出了单用户和多用户的多天线系统容量。

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In another way, by using pressure broadening effect of the spectrum and the quasi-continuously tunable SMMW signal can also be obtained by increase the operating gas pressure of the laser and adjusting the length of the cavity.

利用谱线的压力增宽，调节激光的腔长，改变其纵模频率，也可以获得准连续可调的亚毫米波信号。

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