搜索资源列表
发射部分采用锁相环式频率合成器技术
- 发射部分采用锁相环式频率合成器技术， MC145152和MC12022芯片组成锁相环，将载波频率精确锁定在35MHz，输出载波的稳定度达到4×10-5，准确度达到3×10-5，由变容二极管V149和集成压控振荡器芯片MC1648实现对载波的调频调制；末级功放选用三极管2SC1970，使其工作在丙类放大状态，提高了放大器的效率，输出功率达到设计要求。,Part of the launch phase-locked loop frequency synthesizer using technolog
pam.rar
- 脉冲振幅（PAM）的仿真：脉冲振幅调制，即是脉冲载波的幅度随基带信号变化的一种调制方式。如果脉冲载波是由冲激脉冲组成的，则前面所说的抽样定理，就是脉冲振幅调制的原理。,Pulse amplitude (PAM) of the simulation: Pulse amplitude modulation, that is, the range of carrier pulse with changes in base-band signal of a modulation. If the puls
ST7540
- 新型电力载波模块，对于初学者很有指导意义！-New power line carrier modules, is very instructive for beginners!
carriertrack
- 用matlab的m文件实现载波跟踪和码环同步-carrier track
pink_noise
- 1/f噪声生成程序，由matlab语言实现，1/f噪声又成为pink噪声- This function creates noise with a 1/f spectrum. The noise is then phase modulated so that it can be mixed with a signal to simulate pink noise in the original signal. The noise is specified in power per
BOC
- 介绍了二进制偏移载波调制（BOC)的一些内容-Describes some of the content of the binary offset carrier modulation (BOC)
wlan_transmitter
- WLAN仿真－发送机 wlan No Comments 设置完系统参数后，开始产生发送数据。 1. 产生随机的发送bit（tx_bits），这里不考虑信道编码。 2. QAM映射 3. 将数据映射到不同载波，形成OFDM符号 4. 产生pilot，并将pilot插入OFDM符号中 5. 加入dc和guard子载波 6. 进行ifft，将频域信号变到时域，并加入循环前缀 7. 对信号进行overlap window 8. 在时域产生short preamb
Matlab
- 跟踪载波，捕获载波，求解CA码，ACQUITION.-Carrier tracking, carrier capture, CA Code Solution, ACQUITION.
OFDMQAM
- 子载波数 128 位数/ 符号 2 符号数/ 载波 1000 训练符号数 0 循环前缀长度 8 (1/16)*T 调制方式 4-QAM 多径信道数 3 IFFT Size 128 信道最大时延 2 -Subcarriers median number of 128 percent/2 percent symbol symbol number/carrier training symbols 1000 a few 0 cyclic pre
cjq
- 本程序为集中抄表系统中低压电力线载波数据采集器程序源代码-This procedure focused on meter-reading system for low-voltage power line carrier data acquisition program source code
psk
- psk的调制与解调，载波传输的基本方式，-psk modulation and demodulation, a basic form of carrier transmission,
PLC
- 本文介绍了关于电力载波通信的电路设计副电路图，还介绍了低压电力载波通信的难点和问题的解决-This paper introduces the Power Line Communication on Circuit Design, deputy circuit, also introduced low-voltage power line carrier communication difficulties and problems
IIR
- 三路抑制载波调幅信号相加构成的复合信号st 以及其频谱分析.-Three-carrier AM signal inhibiting compound additive signal and its spectrum analysis st.
bpsk
- 这是个关于bpsk载波恢复的例子，我们用simulik来搭建的整个系统，非常有利于对调制解调和载波恢复的理解。-This is a carrier recovery on the bpsk example, we use simulik to build the entire system, very beneficial for modulation and demodulation and carrier recovery understanding.
random_signal
- 1）最大似然方法联合实现符号定时同步和载波同步仿真 2）泊松分布 3）贝叶斯估计 4）RANSAC方法-1) The maximum likelihood method of the joint realization of Symbol Timing and Carrier Synchronization in simulation 2) Poisson distribution 3) Bayesian estimation 4) RANSAC method
PLLpostprocesser
- this the phase locked loops post processer.PLLs are widely used in frequency synthesis, for frequency multipliers and dividers, for carrier and symbol synchronization, and in the implementation of coherent receivers-this is the phase locked loops pos
Navy-aircraft-carrier-flight-deck-
- 方便飞行人员对航母飞行甲板等各区域工种后勤人员的认识，也便于指挥官的管理。-Navy aircraft carrier flight deck to identify service
Aircraft-carrier-deck--test
- 研究航母飞行甲板的调运。便于高效的指挥和管理。-Aircraft carrier deck operations test
carrier-modulation
- 多载波调制(Multicarrier Modulation)采用了多个载波信号。它把数据流分解为若干个子数据流，从而使子数据流具有低得多的传输比特速率，利用这些数据分别去调制若干个载波。所以，在多载波调制信道中，数据传输速率相对较低，码元周期加长，只要时延扩展与码元周期相比小于一定的比值，就不会造成码间干扰。因而多载波调制对于信道的时间弥散性不敏感。多载波调制可以通过多种技术途径来实现，如多音实现(Multitone Realization)、正交多载波调制(OFDM)、MC-CDMA和编码MC
carrier and bit synchronization
- carrier and bit synchronisation in data communication