最后还给出了最佳帧结构设计方法。并对信道效率与捕获概率之间的关系作了简单说明。
Finally the method of design about optimal frame format is given and the relation between efficiency of channel and acquisition probability is described.
因此，在数据通信系统中不必发送训练序列，可以提高信道效率，同时盲均衡技术还可以获得更好的均衡性能。
So in the digital communication system a training sequence isn't transmitted, which can raise the channel's efficiency.
其编码数据格式能够很好地应用于图像和视频的统计编码中，在保持编码效率的同时，很大程度地提高编码在信道传输中的纠错能力。
The pdfs to which these codes correspond are well matched to statistics of image and video data, thus enabling an increase in robustness to channel errors with no penalty in coding efficiency.
提出了一种改进的安全信道建立算法，新的算法能够承受已知明文攻击，同时还提高了加、解密运算的效率。
A improved algorithm that builds security channel is provided, the new algorithm not only against known-plaintext attack, but also enhance efficiency of operation for encryption and decryption.
为提高产品生产质量和生产效率，降低生产成本，本文研究了基于无线信道的设备状态监测系统。
To improve products quality, production efficiency and reduce production cost, this paper designed a machinery equipment condition monitoring system based on wireless channel.
传统的CDMA技术存在严重的多址干扰现象，使得信道的频谱效率不能达到最佳状态。
The traditional CDMA technology has serious multi address interference phenomenon, so the frequency spectrum efficiency of the channel can′t reach the optimal state.
在未来的宽带无线通信系统中，存在着两个严峻的挑战：无线信道的多径衰落和频谱效率。
There are two serious challenges in the future broadband wireless communication systems: multi-path fading in the wireless channel and spectral efficiency.
路由协议通常使用较多的短报文进行路由的产生和维护，路由效率较低，不适合在超短波信道上运行。
Routing protocol usually use short packets to find out and maintain the routing information, which leads to the low efficiency. Thus it dose not fit the channel.
CORBA核心服务的实现：研究实现信道服务、命名服务，提高系统效率，便于开发人员对系统进行更新和维护的方法。
Core services of CORBA: Study the accomplishment of Event service, Naming service in order to improve system efficiency and allow developers to perform system upgrade and maintenance.
对于无线移动通信系统来说，面临着系统带宽效率和多径衰落信道等诸多问题的挑战。
The system bandwidth efficiency and the dispersive of wireless channel are the big challenges for the wireless mobile communication system.
在未来宽带移动通信中，存在两个最严峻的挑战：多径衰落信道和带宽效率。
In the future broadband wireless communications, there will be two severe challenges to be faced, which are frequency selective fading channels and bandwidth efficiency.
CDMA技术存在着严重的多址干扰(MAI)，使得信道的频谱效率未能达到最佳，系统的用户容量也不易达到最大。
Conventional CDMA communication system has serious mutiple access interference (MAI), so the spectral efficiency and user capacity of channel is not maximum.
因此，要在无线信道上开展视频业务，必须在保证视频编码压缩效率的同时，提高视频编码的容错性能。
Therefore, to realize real time transmission of video traffic over wireless channels, the error resilience of video coding must be improved, without significant compromises in video coding efficiency.
在信道接入中为了提高包转发的效率，本文对802.11的MAC层控制帧做出一点改进。
In this thesis, we make a slightly modification for the control frame of the 802.11 MAC layer to enhance the transmission efficiency of packets in channel accessed.
该方法根据信道条件的好坏动态的调整信源编码速率和信道编码速率，因此极大地提高了系统的性能和编码效率。
The method can dynamically adjust the rates between source coding and channel coding, thus yields good performance and high efficiency.
该协议能够保证发送节点快速接入信道，从而大大提高信道的使用效率。
It improves channel utilization greatly and guarantees that a node accesses the channel rapidly.
与最近的基于四光子避错码的克服量子信道噪声的量子密钥分发方案相比，该方案的量子比特效率提高了16.67%，密钥分发安全性是它的3.5倍。
Compared with the recent QKD scheme based on four-photon QEAC, the qubit efficiency of the authors' scheme increases by 16.67%, and the security is 3.5 times of it.
理论上，CP的长度等于信道冲激响应的记忆长度，较长的CP大大降低了DSL系统的数据传输效率。
In theory, the length of the CP was equal to the memory length of the impulse response of the channel.
考虑反馈信道存在延时的实际情况，推导了系统在延时信道条件下的频谱效率表达式。
Considering the practical case of delayed feedback environment, the closed-form expressions of system spectral efficiency under delayed channel were derived.
这种信道化发射机能同时发射整个处理带宽内所有信道上的信号，具有很高的运算效率，且结构简单，可行性强。
This transmitter can simultaneously emit all signals in the whole bandwidth, having high operating efficiency, simple structure and strong feasibility.
这种信道化发射机能同时发射整个处理带宽内所有信道上的信号，具有很高的运算效率，且结构简单，可行性强。
This transmitter can simultaneously emit all signals in the whole bandwidth, having high operating efficiency, simple structure and strong feasibility.
应用推荐