实际速度会根据lte的频带宽度、通信标准和使用环境有所不同。
The actual speed may differ according to the LTE bandwidth, communications standard, and usage environment.
国际移动卫星通信系统为用户提供广泛的和日益增加的语音频带数据和传真业务。
The Inmarst system offers the user a large and growing range of voice band data and facsimile services.
超宽带是高速无线通信的新技术，然而其较大的带宽会落入GPS频带范围内，造成对GPS信号的干扰。
Ultrawideband is a new technology in high speed wireless communication, but the band′s width will fall into the frequence range of GPS, cause interference to GPS signal.
在DS- CDMA系统中，许多用户占用同一个频带进行通信。
In DS - CDMA system, a number of users share a common frequency band.
QPSK调制方式频带利用率高，因而在通信系统中被广泛采用。
QPSK is commonly used in communication because of its bandwidth efficiency.
移动通信的迅猛发展，对应用于无线通信系统的天线提出了小型化、宽频带、多频段工作等要求。
With the great development of wireless communication, there comes great demand of multi-frequency and broadband antennas of compact size.
当进行高速水下通信时，由于水下信道的频带有限，扩频和MFSK调制方式无法解决高速率信息传输和可利用信道频带窄的矛盾。
Because of limited frequency band of channel, spread spectrum and MFSK modulations can not resolve that high speed transmission is in contradiction with limited frequency band.
扩频通信是指在发送端将信号的频谱扩展到一个很宽的频带上，在接收端通过相关接收，将信号恢复到信息带宽的一种系统。
The SS communication is a system that the spectrum of signal is spreaded in a wide frequency band when transmitted, and is recovered by the correlation reception when received.
允许在数百上千公里的确定区域内通信的无线电话，使用800 ~ 900兆赫(MHz)频带的无线电波。
Wireless telephone that permits telecommunication within a defined area that may include hundreds of square miles, using radio waves in the 800-900 megahertz (MHz) band.
随着现代移动通信的蓬勃发展，频带利用率与通信质量成为目前该领域两个突出的问题。
With the rapid development of modern mobile communication, the bandwidth utilization and speech quality have been the crucial problems.
具有节约频带、节约功率、受信道条件影响小等特点的单边带通信方式是很好的选择。
The Single Side band (SSB) which can save the frequency bandwidth, save the power and receive little effect from the channel condition is a pretty choice.
部分频带噪声干扰和多音干扰对常规跳频通信系统危害较大，自适应跳频系统能够改善跳频通信系统的抗干扰性能。
Partial-band noise jamming and multi-tone jamming are two worse cases jamming for conventional FH, and the AFH can approve the performance of AH for anti-jamming.
平面单极天线以其结构尺寸小、工作频带宽、全向性能好、生产制作工艺简单等优点，广泛地应用于无线通信系统中。
The planar monopole antennas not only have these merits but also have the properties of wideband, low profile, and easily connecting to microstrip line feeding network.
扩频通信的射频信号频带宽度，可扩展到信息信号频带宽度的数倍乃至数千倍。
The band width of the radio-frequency signal for the spread spectrum communication can be spreaded to several times or even thousands of times the band width of the information signal.
双臂半球面螺旋天线具有较宽的阻抗带宽和方向图带宽，工作频带内增益变化不大，该天线在军事卫星通信领域具有广阔的应用前景。
The two-arm hemispherical helical antenna has very wide impedance and pattern bandwidth, and its gain in the whole band is larger and wave mildly, which show that it is of great applicat…
双臂半球面螺旋天线具有较宽的阻抗带宽和方向图带宽，工作频带内增益变化不大，该天线在军事卫星通信领域具有广阔的应用前景。
The two-arm hemispherical helical antenna has very wide impedance and pattern bandwidth, and its gain in the whole band is larger and wave mildly, which show that…
针对跳频通信系统，提出一种非相干的，高频带利用率的调制方案。
This paper introduces a multipurpose digital demodulation method based on SDR, which is one kind of non-coherent demodulation types.
针对跳频通信系统，提出一种非相干的，高频带利用率的调制方案。
This paper introduces a multipurpose digital demodulation method based on SDR, which is one kind of non-coherent demodulation types.
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