设计并实现了利用较先进的电力线通信系统构成的公用数据采集网。
The design and realization of the network are based on an advanced electric wire communication system.
为了建立节能控制系统，本文首先分析了几种常见的住宅内的网络结构，从中选用了以电力线为通信介质的通讯网络，并介绍了一种基于DTMF编码方式的电力线通信系统。
To establish a house saving energy system, this text first analyses several net structures, and chooses power line as the correspondence medium, and also USES DTMF coding mode.
该改进方案改善了电力线载波通信系统的传输性能。
It can improve the transmission performances of power line carrier wave communication systems.
文中分析比较了OFDM系统信道估计算法，并根据低压电力线信道的特点，选择了适合于电力线通信的信道估计方法。
In this paper, some algorithms for estimating channel in OFDM system are analyzed and compared, and the most appropriate one is selected according to power line channel's characteristics.
目的：介绍一种基于低压电力线通信的病房呼叫系统。
Objective To introduce ward calling system based on power line communication.
通过对扩频通信和电力线载波通信特点的分析，设计实现了一套远程抄表系统。
Through the analysis of the spread spectrum and power line carrier spectrum, the authors design a set of remote reading system.
集中器和通信器是本系统的通信节点，它们使控制网络的信息和命令可以通过电力线传输。
The collector and the communicator are communication nodes of the system. They enable the control network to pass the information and commands through power line.
系统还需要在两个方面进行改进：(1)抵抗低压电力线恶劣通信状况的能力；(2)适合于音乐信号的传送。
The system requires two improvements: (1) the ability to counter the severe communication condition of low-voltage power line and (2) the ability to transmit music signal.
本文就是根据澳大利亚STA公司的电力线载波通信芯片STALON3000A进行系统的设计。
This system base on power line communication chip STALON3000A which manufactured by STA company in Australian.
结果表明，该低压电力线扩谱通信系统具有较强的抗干扰能力。
The experiment results indicate that the system has rather strong anti-jamming ability.
低压电力线信道特性是设计低压电力线载波通信系统的基础。
The characteristics of power line channel are the foundation of designing the low voltage power line carrier communication system.
电力线载波通信系统中，对接收信号的处理是非常重要的。
In PLC system, it is very important to process the received signal.
在电力线为通信介质的前提下，探讨了家庭智能网络的一部分应用——小区自动抄表系统。
On the premise of taking power line as the communication media, an application of smart home system is explored, that is, the automatic metering system in the community.
为了设计基于电力线通信（ PLC）的高速可靠通信系统，必须了解衰耗、阻抗、噪声等电力线信道特性。
The design of reliable high speed communication systems for power line communication (PLC) requires an accurate knowledge of such channel specific characteristics as attenuation, impedance and noise.
理论推导和仿真结果表明，COFDM调制技术适合在高压电力线载波通信中使用，在明显的提高数据传输率的同时降低误码率并增强系统可靠性。
Proved by the theoretic deriving and simulation result, the COFDM modulation technology is well suitable for high voltage PLC with a high transmission speed, low BER and high reliability.
OFDM技术以其抗干扰性强，传输速率高成为低压电力线高速通信的主流技术。 信道估计算法是OFDM系统接收端的关键技术之一。
OFDM technique has been the mainstream in low-voltage power line communication because of its good capability against interference and high transmission rate.
最后，在现有的分析及论证的基础上，建立了一个车间级分布式电力线载波通信控制子系统硬件组成模型。
Finally, with analysis and argumentation, this thesis attempts to construct a model of the hardware compositions of the workshop-level distributed power line carrier communication control subsystem.
该通信系统包括在一个电力系统的电力线部分上用于在两个保护继电器之间交换保护和控制信息的两个通信信道。
The communication system includes two communication channels for communication of protection and control information between two protective relays on a power line portion of an electric power system.
试验证明，该系统充分发挥了DTMF的优良性，是一套低成本的电力线载波数据通信系统。
Experiments proves that the system brings the excellent characteristic of DTMF into full play and it is a credible data communication system with lower cost.
主要探讨了高速电力线通信(PLC)与无线业务，以及不同plc系统间的电磁兼容问题。
The EMC problem between PLC and wireless service, and different PLC systems are discussed.
基于该模型，研制了低压电力线的MSK双路扩谱通信电路系统。
The communication system model is set up with MSK and double-pathway spread spectrum for low voltage power line.
本文就通信节点的电力线通信性能做了测试和分析，实验结果表明该智能建筑控制网络通信系统是可行的。
The PLC performance of the communication nodes is tested and analyzed. The results show the communication system of the control network of intelligent building is feasible.
该系统具有成本低、易实现等特点，是一种可以用于实现自动抄表的经济可靠的低压电力线载波通信系统。
This system is easily to achieve by using low cost hardware and an economical communication scheme to realize AMR on low-voltage power line.
因此，该低压电力线扩谱通信系统能较好地抑制低压电力线通信信道的干扰，提高了通信的可靠性，可广泛应用于低压电力线通信领域。
Thus, the system can restrain the noise from low voltage power line and improve communication reliability. It may be widely applied to the communication field using low voltage power line.
这篇文章介绍了一种基于OFDM的低压电力线载波通信系统。
这篇文章介绍了一种基于OFDM的低压电力线载波通信系统。
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