在考察了无线信道特性之后，提出了OFDM技术应用的特点，并对OFDM技术的基本原理给出了说明。
After an introduction of the characteristics of wireless access channels, we give out the application traits of OFDM and its basic principles.
该方式的基本思想是利用专用的窄带ALOHA预约信道进行预约；
The fundamental idea of the method is to use the private narrow band ALOHA channel or reservation.
误码仪是评估信道性能的基本测量仪器。
Error code instrument is a basic test instrument to estimate channel performances.
文章首先简要介绍了OFDM的基本原理，建立了系统仿真模型，对系统的同步和信道估计进行了分析。
Beginning with brief introduction for the basic principle of OFDM, this paper establishes the system simulation model and thereafter analyzes the synchronization and channel estimation.
防精确打击信息作战的基本程序可由消除信息，切断信道，干扰信宿和末端防御组成。
The basic procedure of anti-precision strike information campaign consists of eliminating information, cutting off channel, disturbing useful information and end defense.
分析了CDMA2000中前向导频信道的结构和搜索窗的基本原理。
The structure of the forward pilot channel and the basic principle of search window in CDMA2000 system is analyzed.
接着介绍了无线信道的相关知识、OFDM的系统模型和基本原理，并分析了OFDM信号的设计规则。
Secondly, we introduce the relational knowledge of wireless channel, the system model and basic theory of OFDM, also analyze OFDM signal's design rules.
文中介绍了作为基本通信系统的水印、作为边信息的水印、利用脏纸编码的水印及安全水印的信道容量。
The capacity of watermarking as a basic communication system, the capacity as side information, the capacity using dirty paper encoding and the capacity of security watermarking are introduced.
接收信噪比较大时，平均信道容量上下限基本接近其实际值。
And at high SNR, the upper and lower bounds on the ergodic capacity are close to its true value.
简要地介绍了LDPC码的基本概念，重点讨论了LDPC码在压缩图像传输和磁记录信道中的应用。
This paper briefly introduces the basic concepts of LDPC codes , a nd then discusses the applications of LDPC codes for compressed image transmission and for magnetic recording channels.
论文首先介绍OFDM的基本结构和OFDM 技术的应用领域，然后论述了移动通信中的多径信道成因对信号传播的影响。
Firstly, the basic structure and the application fields of OFDM is introduced, and then the reason of the mobile multipath channel's forming and its influence on signals is elaborated.
地波传播受天气的影响较小，比较稳定，信道参数基本上不随时间的变化而变化，是恒参信道。
The transmission of the earth wave is stable, hardly influenced by climate and its channel parameter does not change with time basically, it is Constant Parameter Channel.
通过对声光信道化接收机基本原理的分析，讨论了积分时间与接收机信噪比改善的关系。
Through the basic principle analyses of acoustooptic channelized receiver, how to improve the SNR by increasing integrating time is discussed.
最后，介绍TD - SCDMA系统的物理信道的基本格式，建立了系统的传输模型，并对模型中的各个环节进行详细介绍和分析。
Finally, introducing the basic formats of physical channel in TD-SCDMA, establishing the system's transmission model, and introducing and analyzing all aspects of model in detail.
本文首先简要介绍了无线信道的特点，OFDM系统的基本原理及其矩阵简化模型。
The thesis first briefly introduces the characteristics of wireless channels, the basic principles and matrix model of OFDM system.
在理论分析的基础上，结合对大量试验数据的分析，给出了空基型导弹图像传输系统无线窄带信道的基本模型。
Based on the analysis of theory data, this paper brings the base model of wireless narrow-band channel for air-based missile image transmission system.
误码检测器是评估通信信道性能的基本测量仪器。
Most of error code checking instruments sold in the present market can only survey the standard communication channel of telecommunication section.
讨论了基于多相滤波器组的高速高效信道化接收机基本原理以及FPGA具体实现方案。
This paper discusses the basic principle of channelized receiver with high speed and efficiency based on polyphase filter and the actual implementation scheme of FPGA.
然后介绍了无线信道的传播机制基本概念以及井下巷道电波传播特性；
Then, the paper introduced the basic concepts of wireless channel transmission mechanism as well as the characteristics of radio wave propagation in underground tunnels;
实验结果表明，该实验模型基本上反映了短波信道的特点。
The experimental results show that the model responses illustrate basically the characteristics of a HF link.
本文首先介绍了移动通信系统的信道特性以及信道模型，并详细描述了OFDM系统的基本原理、结构以及特点。
Firstly, the characteristics and model of wireless channel and the basic principle, structure and characteristics of OFDM systems are introduced.
介绍了WCDMA的同步信道和匹配滤波器实现同步的基本原理，提出了基于匹配滤波器的WCDMA同步捕获方法，并进行了计算机仿真。
This article introduces the SCH in WCDMA and the rationale of synchronization based on marching filter. Then it proposes a capture method of SCH based on marching filter and simulates it by computer.
然后介绍了信道模型和信道均衡的基本原理。
Then, in this paper, channel model and equalization theory are described.
该算法的基本思想是通过读取成功发送的MAC帧中的源MAC地址，来获取当前网络中参与信道竞争的节点数目。
The main idea of S-DCF is to count the number of different source MAC addresses contained in the header of successfully transmitted MAC frames.
主要介绍了发射分集技术中用于抗信道衰落和提高系统容量的空时分组码和分层空时码的原理和基本特点，并对这些空时编码技术进行了性能分析。
To overcome the bad performance in combating fading of BLAST and low code rate of STBC, a layered structure STBC is introduced in this article by combining BLAST and STBC.
主要介绍了发射分集技术中用于抗信道衰落和提高系统容量的空时分组码和分层空时码的原理和基本特点，并对这些空时编码技术进行了性能分析。
To overcome the bad performance in combating fading of BLAST and low code rate of STBC, a layered structure STBC is introduced in this article by combining BLAST and STBC.
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