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同步DMX512 简介和控制器的设计
在灯具调光和控制中，人们大量采用了DMX512 的控制协议，它是由美国剧
场技术协会（United State Institute for Theatre Technology，Inc）于1986
年8 月提出的一个能在一对线上传送512 路可控硅调光亮度信息的标准.
DMX512 通信方式是采用了异步通信格式,每个调光点由11 位组成,其中一个
是起始位,8 位调光数据,两个停止位.每一次传输能512 个调光点.-DMX512
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We simulate uncoded BER of BPSK modulated
data as a function of SNR
-in an AWGN channel
-in a Rayleigh fading channel
-in an AWGN channel when direct sequence spreading
is used
and compare results to the theoretical ones.
We assum
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给程序给出了功率放大器预失真过程中的时延同步问题。-This codes provides the time delay synchronization in the process of power amplifier predistortion.
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Space-Time Synchronization Algorithms for UMTSmDD Systems
with Strong CO-Channel Interference
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摘要本文提出了一种DVB接收机中符号处理功能的实现方案。采用“ 二次编码”和特殊的同步搜索及字节恢复电路, 不仅使处理时间显著减少, 同时硬件资源也得到节省, 现已经应用于卫星数字电视
接收芯片的设计中。-Abstract This paper presents a DVB receiver symbol processing implementations. A " second code" and a special search and byte synchroniz
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在电力系统通信中，数字光纤通信由于其本身的优点得到越来越广泛的应用。数字光纤通信系统中，从电端机传输过来的电信号均要结合数字光纤通信传输的特点经过线路码型的转换。通过线路码型的转变平衡数字码流中的“0”和“1”码字，从而避免码流中出现长“0”或者长“1”的现象。在数字光纤通信系统中比较常用的线路码型就是mBnB码型，mBnB线路码型的最大优点就是最大相同码元连码和少、定时信息丰富、并且有简单成熟的误码监测与码组同步的方法。
-In the power system communication
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在TOA测距的基础上，提出了一种三维无线传感器网络节点定位算法，并对其性能进行了分析，给出了算法的时间同步误差和定位误差。最后在现有仿真平台OMNET++的基础上构建三维仿真模块，对算法进行了仿真实现，给出了该算法的定位精度和覆盖率-This paper proposes one three-dimensional localization algorithm based on TOA distance measurement and analyzed the performance of th
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频率同步是宽带OFDM系统中的关键技术，IEEE 802.11a 采用OFDM技术，利用其前导序列的重复结构，提出了一种分步的粗细频偏捕获与校正算法，同时为了补偿时域同步后的残余相差和适应信道的时变特性，还提出了一种基于频域导频的相位跟踪方案-Frequency synchronization is a key technology in the broadband OFDM systems, IEEE 802.11a uses OFDM technology, the use of the r
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Orthogonal Frequency Division Multiplexing (OFDM)
systems are more sensitive to timing and frequency offsets than
single carrier systems. This Paper presents a method of joint time
and frequency synchronization for OFDM systems. The
synchroni
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Orthogonal Frequency Division Multiplexing (OFDM)
systems are more sensitive to timing and frequency offsets than
single carrier systems. This Paper presents a method of joint time
and frequency synchronization for OFDM systems. The
synchroni
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Orthogonal Frequency Division Multiplexing (OFDM)
systems are more sensitive to timing and frequency offsets than
single carrier systems. This Paper presents a method of joint time
and frequency synchronization for OFDM systems. The
synchroni
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Every thing about MIMO system and OFDM, including Matlab source, timing, frequency synchronization, equalization, estimation, PAPR, space time block code, channel capacity
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关于无线传感器网络时间同步算法在VB在的仿真-Wireless sensor network time synchronization algorithm in VB in the simulation
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Time Synchronization and Localization
in Sensor Networks
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Time Synchronization and Energy Efficiency in WSN (PhD thesis)
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：利用RS485数据两线的硬件基础上，以较少的总线控制命令，实现RS485数据总线的时分复用功能，使总线上每一个节点均能平等地
发送数据，在软件设计上信号灯状态切换的时间同步不紊乱，通讯消息的收发有序不冲突以及通讯数据包的完整性-: Using hardware-based two-wire RS485 data on the bus with less control commands to achieve RS485 data bus time-division multiplexing
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A 16-QAM signal X, whose power is normalized as unity, is transmitted with OFDM over the discrete-time channel model h which has been used in Homework #2 and #3. As depicted in the below figure, the transmitter (TX) is now equipped with an N-point ID
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In this letter, we propose a simple orthogonal
frequency-division multiplexing (OFDM) scheme for an asynchronous cooperative system, where OFDM is implemented at the source node, and time-reversion and complex conjugation are implemented at the rel
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Signal identification represents the task of a receiver
to identify the signal type and its parameters, with applications
to both military and commercial communications. In this paper,
we investigate the identification of spatial multiplexing (
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本文描述了使用多相滤波器组实现数字接收机中的符号同步的方法。(This paper describes the use of a polyphase filter-
bank to perform the interpolations required for symbol timing
synchronization in a sampled-data receiver.)
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