This paper gives the COFDM transmission principle and DVB-T COFDM scheme.
本文介绍了COFDM传输原理和数字电视地面广播系统的COFDM实现方案。
The transporting part, mainly adopting COFDM, is in charge of transporting service and the content of application.
服务、应用部分主要是系统所承载的商业化服务内容，主要提供音频、视频和其他增值数据服务。
The article introduced the design method of the baseband which is made up of COFDM channel coder and COFDM modulator of DAB transmitter.
介绍DAB发射机系统的基带部分即COFDM信道编码和COFDM调制的设计方法，对相关过程做了阐述。
In DVB satellite transmission system used QPSK, using QAM cable transmission, terrestrial transmission using COFDM (coded orthogonal frequency division multiplexing) way.
在DVB系统中卫星传输采用QPSK，有线传输采用QAM方式，地面传输采用COFDM(编码正交频分复用)方式。
The COFDM modulation part is made up of blocks partition, COFDM symbol forming, DQPSK symbol mapping, frequency interleaving, difference modulation and COFDM modulation and so on.
实现不同帧之间的比特交织等。COFDM调制部分包括块划分及COFDM符号形成、DQPSK符号映射、频率交织、差分调制及COFDM调制等环节。
Base on the analysis of terrestrial transfer channel, the paper introduces the DVB-T standard, and discuss the core COFDM technology as well as front-end transmit system structure.
文章在分析地面传输信道特性的基础上，介绍了地面广播数字电视的DVB - T标准，探讨了其核心的正交编码频分多路复用COFDM技术、前端发射设备的系统结构及其优缺点。
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.
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。
This paper investigates the soft decision of de-mapping technique in COFDM de-modulation scheme. It proposes a new method suitable for the scheme for extracting CSI from communication channel.
深入研究了数字电视地面广播COFDM解调方案中的解映射软判决技术，提出了适用于该系统的信道状态信息CSI提取方法。
This paper investigates the soft decision of de-mapping technique in COFDM de-modulation scheme. It proposes a new method suitable for the scheme for extracting CSI from communication channel.
深入研究了数字电视地面广播COFDM解调方案中的解映射软判决技术，提出了适用于该系统的信道状态信息CSI提取方法。
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