接收端

The m-sequence with Cyclic Prefix is inserted between OFDM symbols in time domain as training sequence. The cross-correlation is calculated between the received sequence with CP removed and the appointed circular shifted m-sequence, which takes reliability of the estimation of channel impulse response on account of the two-valued auto-correlation property of the m-sequence, thereby the channel frequency response can be advisably decided.

在时域OFDM符号之间插入附加循环前缀的m序列作为训练序列，在接收端将去掉循环前缀的接收序列与指定的循环移位m序列作相关运算，然后利用m序列的二值自相关特性获得信道的冲激响应估计，从而得到信道的频率响应估计。

It is the method that can restrain multiple access interference, which is approbatory by research personnel.

通常在CDMA移动通信系统中，接收端的接收信号由多个用户的有用信息和信道噪声组成。

In other environment, we can use buffer method and adjust transfer speed based feedback buffer state of receiver, which ensures interactive between user and information servers.

在延迟不可准确控制前提下，本文提出了基于发送端多帧平衡和根据接收端缓存状态的反馈的传送方法，可以保证用户和信息中心的良好交互性，同时降低网络资源占用。

The NON-AS algorithm can be applied to receiver of multiple input and multiple output systems,and selection of receive antennas is based on the Frobenius-2 norm of instantaneous received signal vector.

NON-AS算法适用于多输入多输出系统的接收端，接收天线选择是基于每个天线瞬时接收到信号矢量的F-2范数。

An error detection code is attached on a per transmission symbol basis and transmission is performed, and, when mobile terminal apparatus 100 at the receiving end detects an error, subcarrier information obtainer 130 counts the number of carriers having received level below predetermined standard on a per group basis, and makes the group having the count value above a threshold level subject to retransmission request.

在要发送的每个发送码元上增加差错检测码，当接收端的移动终端装置(100)检测到差错时，副载波信息获得器(130)对具有低于预定基准的接收电平的副载波的数量计数，并且确定重发具有高于门限值的计数值的组。

TCP establishes the connections among sending and receiving Web computers, handles the assembly of packets at the point of transmission, and their reassembly at the receiving end.

TCP在发送和接收网络计算机之间建立连接，处理信息包在传输点的组装和在接收端的重新组装。

Due to the short pulse duration of the pulses,UWB signals have significantly more resolvable multipath as compared to narrow signals.

由于具有较短的脉冲宽度，相比于传统的窄脉冲通信，它在接收端具有更多的可接收的多径分量。

Currently some different video transmission scehmes have been proposed, such as source-based adaptive rate control, receiver-based simulcast and layered multicast, but these schemes basically follow the traditional network design principles and take end-to-end congestion control and error control mechanisms without the participation of network intermediate nodes, making a series of problems such as session management difficulty, congestion control blindness, feedback explosion, and the difficulty in achieving fairness among different users.

目前对于网络视频传输已出现了各种不同的解决方案，如基于源的自适应速率控制方案和基于接收端的联播、分层多播等视频传输机制，但这些方案基本上都遵循网络设计的传统原则，采取基于端到端的拥塞控制和差错控制机制，而没有网络节点的参与，从而导致会话管理困难、拥塞控制盲目、反馈爆炸等一系列问题，而且难以在用户之间达成公平。

In the application of the OFDM system, combined with the adaptive modulation, adaptive coding and the receive diversity based on the accurate estimation of the characteristic of the subchannels, we can increase the spectrum usage, reduce the transmission power, the intercarrier interference and the peak-to-average power rate. So the system performance is optimized.

在OFDM系统的应用中，在对各子信道特性的准确快速估计的基础上，通过对各子载波进行自适应调制，自适应信道编码，以及和接收端的分集接收相结合，能够提高频谱利用率，降低发射功率，抑制子载波间干扰和降低功率峰均比，从而能够使系统的性能达到最优。

Each receiving station uses eight octets of timing information to synchronize its receive circuit to the incoming data.

每个接收端的机台使用八个八位元的时序资讯，让它的接收电路可以对接收资料作同步。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。