接收端

After bus driving, clock shaping and restoring to high speed multicasting message data steam, the data are sent to corresponding user port based on the multicasting port list.

在背板进行阻抗匹配；接收端使用PLL电路恢复同步时钟，在提高总线数据速率的同时保证了接收端的信号质量。

Results reveal that the spatial correlation properties of MIMO channel are dependent on the PAS, the antenna pattern and the geometric configuration of the array. When the PASs at the base station and the mobile station are independent, the spatial correlation matrix of the MIMO channel is the Kronecker product of the spatial correlation matrix at the BS and the MS. The temporal correlation properties of the MIMO channel are determined by the PAS at the MS, antenna pattern and the traveling speed of the MS. Based on the analysis of the physical essence, the temporal correlation properties are equivalent to the spatial correlation properties at the MS. The joint spatio-temporal correlation properties at the BS and the MS are quite different. When the PASs at the BS and the MS are independent, the spatial correlation at the BS is independent on the temporal correlation, but this is not true for the spatial correlation at the MS.

分析与计算的结果表明，MIMO信道的空间相关特性由角度谱、阵元的方向图、阵元间距以及阵列几何结构决定，并且当发射端与接收端的空间统计特性相互独立时，MIMO信道的空间相关矩阵可以表示为发射阵列空间相关矩阵与接收阵列空间相关矩阵的Kronecker乘积：信道的时间相关仅与MS端的角度谱、阵元方向图以及MS的运动速度有关，通过对信道时间相关的物理本质的研究，说明了时间相关与MS端空间相关的等价性；MIMO信道的空-时联合相关特性在BS端和MS端具有不同的特点，当发射端与接收端的空间统计特性相互独立时，BS端的空间相关与时间相关是独立的，而由于信道的时间相关与MS端的空间相关具有相同的物理本质，MS端的空间相关与时间相关不是独立的。

The sending end when the use of pulse modulation approach will be a binary digital signal into a frequency modulation of the pulse sequence, and driver fired infrared tube to the form of light pulses sent receiver will receive the pulse of light conversion to electrical signals , and then, after amplification, filtering and other treatment to the demodulation circuit after demodulation, reduced to a binary digital signal after the output.

发送端采用脉时调制方式，将二进制数字信号调制成某一频率的脉冲序列，并驱动红外发射管以光脉冲的形式发送出去；接收端将接收到的光脉转换成电信号，再经过放大、滤波等处理后送给解调电路进行解调，还原为二进制数字信号后输出。

The present invention relates a method and apparatus for receiving signal in MIMO CDMA system, charactered in that: on transmitting side, transmit signal by at least two antennas; on receiving side, receive at least one antenna, and obtaining channel paraneters by estimation of channel, using the channel parenters and maximum likelihood principle into MIMO+CDMA system, solving the problem of receiving signal in multiple mobile environment in effect.

本发明为一种基于MIM0 CDMA的接收方法及装置，其特征在于，发射端：至少采用两个发射天线发射信号；接收端：至少采用一个接收天线接收发射天线发射的信号，并且通过对信道的估计获得信道参数，采用该信道参数和最大似然原理的步骤得到输出信号。本发明将ML原理应用于MIMO+CDMA系统中。

Audio and video steams accord with MPEG-2 standard can form PES after packeted, and then PES steam can form tranport stream after multiplexer. The transmitter conduct a number of transport stream multiplexing ,then send out the signal via satellite,cable or terrestrial transmitting station.The end user receiver picks up the DTV signal,demultiplexes it and finally the MPEG-2 decoder presents the decoded audio and video stream to the user.

按MPEG-2标准编码后的音频视频流经打包之后形成打包基本流，PES经过复用之后形成传输流，发射端进行多个传输流复用，最后通过卫星、有线电视及开路电视等不同媒介传输方式进行传输；接收端经信号接收，解复用，解码后显示给用户原先的音、视频节目。

A simple coded modulation technique, which is called "split-phase coded modulation", is studied in this thesis. Such a technique is especially suitable to be applied in a multi-antenna system. To have an insight into the possible transmit diversity benefits to the proposed scheme, here we consider the employment of multiple transmit antennas and a single receive antenna for the considered system.

本论文探讨一个简单的编码调变技术，我们称为「相位分离编码调变」，此编码调变技术特别适用於多天线系统，为了进一步了解这样的架构在「传送分集」上所造成可能的效益，在此论文中，我们假设传输端布署多重天线，但在接收端仅使用单一天线接收。

In the approach, the synchronization of the chaotic signals between the transmitter and receiver does not rely on the chaotic self-synchronization method proposed by Pecora and Carroll. The chaotic carrier is retrieved by using a non-dynamical system at the receiver which has the same nonlinear function form as what is adopted at the transmitter.

本方法中，收、发两端混沌信号的同步不是依赖于Pecora和Carroll提出的混沌自同步方法，而是在接收端采用一个与发送端具有相同非线性函数形式的非动力学系统从接收信号中提取混沌载波。

The system is made up of two separate parts: collection and reception. The collection part digitalizes the signal from the sensor and sends it out using wireless digital transmission technology.

该系统由采集和接收两部分组成：采集端将传感器的输出信号进行模数转换，利用无线数字传输技术将数据发送到接收端，在接收端对数据进行存储和显示。

The nRF903 single chip RF transceiver was employed to modulate and demodulate for data transfer. The system is made up of two separate parts: collection and reception. The collection part digitalizes the signal from the sensor and sends it out using wireless digital transmission technology.

该系统由采集和接收两部分组成：采集端将传感器的输出信号进行模数转换，利用无线数字传输技术将数据发送到接收端，在接收端对数据进行存储和显示。

The method comprises: when the sending end receives a high priority SDU from upper layer, the fragmentation, cascade connection and filling are made for the high priority SDU to form HPDU, and then the HPDU is inserted in front of the PDU already completing the fragmentation, cascade connection and filling, and not yet sent out; based on the head expansion type or the length indication, a PDU is determined as a HPDU; in addition, establishing a buffer, and inputting the value of LI ah HE into the buffer; after all HPDUs of a same SDU are collected, a SDU is recombined and is sent to upper layer.

一种无线链路控制层发送确认模式交织协议数据单元的方法，在发送端收到上层高优先级SDU时，将该高优先级SDU进行分片、串接、填充处理形成HPDU，插入到已经完成分片、串接、填充处理但尚未发送的PDU前，使用HE或LI长度指示标识HPDU，实现优先发送HPDU；在接收端接收下层PDU，根据PDU中的头扩展类型HE或者长度指示LI判断为HPDU；另外开辟缓冲，根据长度指示LI和HE值将HPDU中的数据放入该缓冲；同一SDU的所有HPDU收齐，重组成SDU向上层投递。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。