Secondly, the architecture of reader front end is determined based on the analysis of RFID protocols and wireless frequency regulations.
其次，在对射频识别系统的协议和无线电频谱规范进行分析的基础上，确定了阅读器射频前端的体系架构。
It spurs us to develop highly efficient coding, modulation and signal processing techniques to improve the wireless frequency spectrum efficiency.
这种挑战使得人们努力开发高效的编码、调制以及信号处理技术来提高无线频率的效率。
It is a quite important problem to employ limited frequency band resources effectively today, when the wireless frequency resources is more and more sparse day and day.
在无线频道资源日益紧张的今天，如何有效的利用有限的频段资源是一个比较重要的问题。
Any device that's built to receive a wireless signal at a specific frequency can be overwhelmed by a stronger signal coming in on the same frequency.
任何以特定频率接收无线信号的设备都可能被来自同一频率的更强的信号淹没。
Many of the TV frequency bands have been vacated by TV's move to digital, so, in a country hungry for wireless resources, it was proposed that this spectrum get redirected to mobile access use.
当电视信号变为数字信号后，许多电视的频率带宽都被闲置下来。因此，在一个渴望无线资源的国家，这些频带被引向移动接入应用可谓众望所归。
Wireless frequencies are a scarce resource, so wireless providers use multiplexing to send multiple calls over a single frequency.
无线频率是稀有的资源，因此无线频率提供商使用多路复用技术通过一个频率发送多个呼叫。
Consider a warehouse that's changing from a manual "print and select" method to an automated Radio Frequency Identification (RFID) or wireless barcode system.
请考虑一个从手动的“打印和选择”方法更改为自动无线频率识别(Radio Frequency Identification,RFID)或无线条形码系统的仓库。
Her 73 filed U.S. patents range from networking, Web, security, privacy, multimedia, wireless, pervasive devices, to radio frequency ID.
她申请的73项u.s.专利涵盖的范围从网络、Web、安全、保密、多媒体、无线、普遍设备到无线电频率ID。
NFC is a short-range, high-frequency wireless technology which lets devices, primarily mobile phones, communicate with other NFC devices in order to exchange data.
近场通信是一种近距离、高频率无限技术，可以允许手机等设备和其它近场通信设备进行数据交换。
The two companies offer high-frequency service between major U.S. cities and wireless Internet service on board.
这两家公司主要经营大城市间的客运业务，车次频繁，而且提供车内无线上网服务。
In wireless technology, collision occurs when two transmitters transmit at the same time with the same modulation scheme on the same frequency.
在无线技术中，冲突发生在两个发射器在相同的时间、相同的频率发送相同的调制方式。
It USES Radio Frequency technology, instead of old local area network with twisted-pair copper wire, and makes the wireless local area network use simple architecture which allows users to access.
它利用射频的技术，取代旧式的双绞铜线所构成的局域网络，使得无线局域网络能利用简单的存取架构让用户透过。
In addition, there will be frequency selective fading in the future broadband MIMO wireless communication systems, and the traditional high-performance equalizer will become extremely complicated.
另外在未来宽带MIMO无线通信系统中，通常面临频率选择性衰落信道，传统高性能均衡器就会变得异常复杂。
This paper proposes a novel channel estimation method for wireless Orthogonal Frequency Division Multiplexing systems.
该文提出了一种新的信道估计算法，用于无线移动信道下的正交频分复用系统。
For wireless digital communications, digital user signal is usually at first converted into analog domain and then modulated to radio frequency by one or two steps.
对于无线数字通信而言，通常将数字用户信号首先转换到模拟域中，然后通过一个或两个步骤将其调制到无线电频率。
A symbol timing algorithm for orthogonal frequency division multiplexing (OFDM) systems with the cyclic prefix under wireless channels is proposed.
提出了一种新的无线信道下基于循环前缀的正交频分复用系统符号定时同步算法。
The wireless technology, called radio frequency identification (RFID), has been used in thousands of stores for tracking inventory and in identification chips implanted in some pets.
这种无线技术称为无线电频率识别(RFID)，曾在成千的存储器运用追踪以及在正电子发射体层摄影的鉴定植入芯片中鉴定识别。
In wireless communication system, there is a large frequency bias between carrier frequency and local oscillating frequency. AFC is contributed to eliminate it.
在无线移动通信中，接收机的本地振荡频率和载波频率之间往往存在较大的频率偏差，AFC用于克服此频偏。
If you want to make phone calls while surfing the web, either use a wired telephone or cordless phone that operates at a different frequency than your wireless network.
如果在网上冲浪时想要打电话，请使用有线电话或工作频率与无线网络不同的无绳电话。
High data transmission rates and high mobility give rise to time - and frequency - selectivity in wireless communication channels.
高数据传输速率以及终端的高速移动，导致无线通信信道具有时间选择性与频率选择性两个特征。
RFID (Radio Frequency identification) is one of the identification technologies which can realize intercommunication by using wireless channel.
射频识别技术是利用无线信道实现双向通信的一种识别技术。
While the Digital Intermediate Frequency technology is one of the pivotal technology in the wireless base station system.
而数字中频技术是无线基站传输系统中的关键技术之一。
Frequency Synthesizer (FS) is a very important block, which is used in a wireless transceiver as a local oscillator for frequency translation and channel selection.
频率合成器是射频收发机中非常重要的模块，是用于频率转换和频道选择的本地振荡源。
Digital wireless transmit video frequency for max-range 87 kilometers.
最大距离达到87公里数字化无线传输音视频；
This paper proposes a novel channel estimation method for wireless Orthogonal Frequency Division Multiplexing (OFDM) systems.
该文提出了一种新的信道估计算法，用于无线移动信道下的正交频分复用(OFDM)系统。
However, for the wireless mobile communication systems, the radio channel is frequency selective and time-varying.
对于无线通信系统，无线信道不仅是频率选择性的，而且是时变的。
Based on the idea of frequency invariant, a wideband adaptive antenna array is proposed for wideband wireless communication system.
基于频率不变思想，提出一种适用于宽带无线通信系统下的，新的宽带自适应天线阵列。
As new standards emerge and data transmission rates increase, the frequency of using handheld wireless devices to make data transactions is expected to increase.
随着各种新标准和数据传输速率的提高，进行数据处理的无线手持设备的频率也会提高。
There are lots of disadvantages in wireless environment, such as multi-paths fading, Doppler frequency shift and fast time varying of channel.
无线环境中存在多径衰落、多谱勒频移和信道快速时变等许多不利因素。
This register sets the operating Rx frequency for the wireless link Select the desired channel from the frequency table.
这个寄存器设置无线连接的接收频率。从频率表中选择所需的通道。
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