论文在第一章对MIMO系统和空时编码技术坐了概述，并且分析了无线信道的特性。
Chapter 1 reviews MIMO system and space-time coding, besides some analysis on wireless channel characteristics.
本文第一章绪论首先分析了无线信道的特性，介绍了小尺度衰落模型，多径衰落模型以及WSSUS信道模型。
The first chapter introduced the characteristics of the wireless channel, the small-scale fading model, multi-path fading model and WSSUS channel model.
由于无线信道的高误码率和突发错误的特性，在无线at M中必须使用有效的差错控制机制。
In wireless ATM network, an efficient error control mechanism has to be used because of the high bit error rate and burst nature of bit errors.
根据电磁波在无线信道中传播的随机特性，使用随机射线建模电磁波传播。
According to stochastic characteristics of electromagnetic wave propagating in wireless channels, stochastic rays are employed to model electromagnetic wave propagation.
由多径色散及多普勒频移造成的频率—时间选择性衰落是城市移动无线信道的一个重要特性。
The frequency time selective fading resulted from multipath dispersion and Doppler frequency shift is an important characteristic of urban mobile radio channel.
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.
多普勒效应体现了无线信道的时变特性。
Doppler effect reflects the time-varying characteristics of wireless channel.
无线信道是移动通信的传输媒体，研究其特性并建立一个与实际传输环境相符合的无线信道仿真模型都有着十分重要的现实意义。
Researching its characteristics and establishing a simulation model which conforms to the actual transmission environment of the radio channel have a very important practical significance.
无线通信信道的空间特性十分复杂，通信信道的精细仿真对无线通信网络的设计和开发有着重要的作用。
The spatial characteristic of wireless communication channel is very complex. The fine simulation of the channel is helpful to design and develop wireless communication net.
在研究红外信道特性的基础上，给出了一种用于提高红外无线互联网接入速率的HHH(1,13)码的编解码方案。
At last, it gives out a coding and decoding scheme of HHH (1, 13) code, which can advance the connection speed of infrared wireless Internet.
本文研究多径衰落信号的多重分形性质，分析并指出了信号多重分形维数是描述无线信道传播特性的重要参数；
Fractal characteristic of multipath fading signal is studied in the paper which shows that multifractal dimension is a key parameter for describing the signal propagation in wireless channels.
在无线体域网环境中，人体作为各种传感器节点的承载体影响着整个网络中的信道特性，使得环境中的信道具有快速时变的特性。
In WBAN, human body which is considered as the carrier of all kinds of sensor nodes will influence the channel characteristic, and this makes the channel time varying.
由于无线信道的时变、高误码等特性，码率可变的RCPT码是比较理想的信道编码方式。
For the characteristics of wireless channel such as time-variety and high BER, the rate adjustable RCPT code is good for channel coding.
本文首先分析了1xev - DO前向业务信道的链路特性和今后将面临的新业务特性，然后着重对1xev - DO的无线资源分配和平均业务流量作了研究。
This paper first analyzes the forward link of 1xev-do and new traffic speciality, then pays more attention to the study of the radio resource allocation and the average throughput?
通过研究几种发射脉冲的一次反射和二次反射的接收波形以及它们的误码率特性，研究了信道多径失真对室内无线光通信的影响。
The paper researches the received waveform and the characteristic of BER in one refection and twice refection, studies the influence of multipath distortion on the transmitted pulse.
该策略利用无线信道的广播特性，能提高网络吞吐率、节约无线网络资源。
This scheme makes use of the broadcast nature of wireless channel, which can provide higher throughput and decrease the waste network resources.
有效的设计、评估和安装室内无线网络需要准确地描述室内无线信道特性。
The effective design, assessment, and installation of a radio network in an indoor environment require an accurate characterization of the radio propagation channel.
MIMO系统的容量增长与无线信道的空间相关特性紧密联系。
Capacity increases promised by MIMO systems mostly depend on the spatial correlation properties of the radio channels.
基于分级调制的中继协作技术可以很好地利用无线信道的广播特性和中继节点的位置优势来对抗信道衰落。
Cooperation with hierarchical modulation can employ broadcasting characteristics of wireless channel and location advantage of relay node to confront fading.
在分析AWGN信道特性的基础上，通过研究典型调制方式下的超宽带冲激无线电信号(IR -UWB)的接收机结构，找到了一种IR - UWB最佳接收机。
The structure of receiver in typical modulation Impulse Radio Ultra Wide Band (IR-UWB) is discussed, and the best IR-UWB receiver on AWGN cannels is given.
在无线通信系统中，信号在传输过程中由于多径效应和信道带宽的有限性以及信道特性的不完善性导致不可避免地产生码间串扰。
In radio communication system, because of multipath effect and the finity of channel bandwidth and incomplete channel, intersymbol interference (ISI) is inescapability during the data transfer.
论文主要工作有：1。通过分析信号在无线信道的传播特性，建立了无线信道模型。
The main contents of the thesis are displayed as follows: 1. Wireless channel model has been established by analyzing the signal propagation characteristics in wireless channel.
详细研究了无线at M交换机的信道特性，提出了对AT M信元进行保护的RS码编码方案，并且论证了该方案的可行性。
The channel characters of wireless ATM switcher have been discussed in detail, the rs coding scheme to protect ATM cells is put forward and the feasibility of this scheme is proved.
针对认知无线电网络中多信道特性，提出了一种基于链路质量的多信道路由协议。
Considering the characteristics of cognitive radio networks, this paper proposes a new routing protocol based on link quality for multi-channel cognitive radio networks.
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;
首先，文章分析了无线信道的传输特性，对几种常见的衰落进行了具体的介绍。分析了无线信道的传播模型。
First of all, analyze the transmission characteristic of wireless channel, describe in detail several types of common attenuation and give the transmission model of wireless channel.
时延特征参数作为反应无线信道宽带特性的关键参数，对多载波系统的设计具有重要的指导意义。
As the key parameters to reflect the wideband channel characteristics, the parameters involved delay propagation play an important role in the design of multiple carries systems.
自组织网络中无线信道的时变特性和网络拓扑的不断变化导致了链路的频繁断续，使得数据包大量丢失。
In AdHoc network, the pause of chain-lines is caused by the continuous change of wireless channel and the expanding of network, which leads to the loss of the data package.
自组织网络中无线信道的时变特性和网络拓扑的不断变化导致了链路的频繁断续，使得数据包大量丢失。
In AdHoc network, the pause of chain-lines is caused by the continuous change of wireless channel and the expanding of network, which leads to the loss of the data package.
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