查询词典 antennas

An efficient Sphere Decoding algorithm is proposed for uncoded Multi-Input Multi-Output systems with a large number of antennas and higher modulation constellations. This method utilizes a channel-based group detection strategy.

摘要该文针对无编码的多输入多输出无线通信系统中的最大似然检测接收机在发端天线数较多、调制阶数较高时计算复杂度过高的问题，提出了一种低复杂度的球形译码算法。

The effect of superstrate on characteristics of dual-band microstrip antennas with bilithic reactive loading is studied firstly.

首次研究了多层介质覆盖对电感加载双频微带天线特性的影响，得到一些有意义的结论。

The capacity of MIMO system is increased linearly with the number of the antennas in multi-path fading environments, and transmit/receive antenna selection barters little lost of system performance for great decreasing of RF cost, making MIMO system not fully limited by RF cost.

摘要在多径衰落环境中， MIMO系统的信道容量随天线数的增加呈线性增加，发射/接收天线选择方法能以很小的性能损失换取射频成本的大幅度降低，使MIMO系统不完全受射频成本的限制。

Based on the fact that the interferences after dispreading have been suppressed and the additive noises on different antennas were uncorrelated.

基于智能天线阵的波达方向估计不仅可以用于空间滤波和波束赋形，而且可以用于对目标的测向、定位与跟踪。

Totally different from the traditional algorithms for CDMA smart antennas, the new algorithm exploited the spreading codes directly within the iterative weight updating procedure instead of indirectly through the dispreading procedure.

与CDMA移动通信系统中的传统算法完全不同，新波束控制算法直接在权重迭代过程中利用了扩频码，而不是间接地通过解扩频等环节使用扩频码。

Take a look at where their antennas used to be and how they're engineered now.

看看他们的天线用来将和他们是如何设计的现在。

Next, I had to figure out how to shape the teardrop profiled high frequency antennas.

接下来，我要弄清楚如何形成泪滴异型高频天线。

Should I have twin rear antennas and dual spotlights or would one of each do.

我应该有双后方天线和双焦点或会之一，每做。

Adaptive array antennas have become one of the spotlights of the Third Generation mobile communication.

自适应阵列天线已经成为第三代移动通信研究的热点之一。

Because the aircraft can tightly hold a station, the end-user's antennas do not need to be continuously adjustable.

因为该飞行器可以坚固的保持在一个位置，该终端用户的天线没有必要是连续可调的。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。