HART protocol which is the transitional protocol of field-bus allows transferring both digital signal and analog signal simultaneously in order to actualize bidirectional communication.
HART协议是现场总线的一种过渡性协议，可使数字与模拟信号同时传送且互不干扰，实现双向通讯。
It is proved that this system automatically steers the direction of a receiver antenna and locks a synchronous satellite in order to acquire best communication signal.
经实践验证，该系统实现了自动控制接收天线转向并锁定某一个同步通信卫星，以获得最佳的通信信号。
The local controller sends steering order to field signal-acquisition equipments and receives test data from RS485 bus, thereby communication control of RS485 bus was realized.
本地主控机通过RS485总线向现场信号采集设备发送控制指令并接收采集的测试数据，从而实现对rs485总线通信的控制。
In order to realize subway mobile communication signal coverage, specialized radio communication system was established.
为了实现地铁移动通信信号的覆盖，建立了专用无线通信系统。
It adopts two-direction CATV tech and combines with multiplex public exchanging tech, computer processing and on-line, and digital signal and order tech, composing public communication network.
本发明采用双向CAT V技术结合多信道共用交换技术，计算机处理，联网及数字信令技术组成有线公用通信交换网。
In order to improve digital signal processing speed, dedicated algorithm to achieve some of the DSP and communication interface module also realized by the CPLD or FPGA.
为了提高数字信号处理速度，现在一些实现专用算法的DSP模块和通信接口也由FPGA或者CPLD实现。
In the mobile communication system, we usually use power amplifier to enlarge the pow of the transmited signal in order to assure the Coverage in some range.
在移动通信系统中，为了保证一定范围的信号覆盖，通常使用功率放大器来对信号放大。
In the mobile communication system, we usually use power amplifier to enlarge the pow of the transmited signal in order to assure the Coverage in some range.
在移动通信系统中，为了保证一定范围的信号覆盖，通常使用功率放大器来对信号放大。
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