Description: 红外通讯系统设计比较
红外通讯以红外线作为通讯载
体，通过红外光在空中的传播来传
输数据，它由红外发射器和红外接
收器来完成。在发射端，发送的数
字信号经过适当的调制编码后，送
入电光变换电路，经红外发射管转
变为红外光脉冲发射到空中；在接
收端，红外接收器对接收到的红外
光脉冲进行光电变换，解调译码后
恢复出原信号。
红外通讯作为一种数据传输-Infrared communication system design compared to infrared communication infra-red as a communications carrier, through infrared light spread in the air to transmit data, it is by infrared transmitter and infrared receiver to complete. In the transmitter, sending the digital signal through an appropriate modulation coding, the transformation into the electro-optical circuit, the infrared emission tube into infrared light pulses launched into the air in the receiver, infrared receiver infrared docking received light pulses to photovoltaic conversion, demodulation decoding recovery of the original signal. Infrared communications as a data transmission Platform: |
Size: 78848 |
Author:刘阳 |
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Description: 基于模糊逻辑控制的数字锁相环，用于通信系统中的载波恢复。Digital phase lock loop base on fuzzy logical control, which is used to recover carrier in communication system.-Based on fuzzy logic control of digital phase-locked loop for the communication system in carrier recovery. Digital phase lock loop base on fuzzy logical control, which is used to recover carrier in communication system. Platform: |
Size: 33792 |
Author:gogomx |
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Description:
A new carrier synchronizationalgorithm that is carrier recovery strategy is proposed for all digital receivers that is all digital -
A new carrier synchronization algorithmthat is carrier recovery Platform: |
Size: 3072 |
Author:蝈蝈 |
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Description: 数字基带信号的传输是数字通信系统的重要组成部分。在数字通信中，有些场合可不经过载波调制和解调过程，而对基带信号进行直接传输。采用AMI码的信号交替反转，有可能出现四连零现象，这不利于接收端的定时信号提取。而HDB3码因其无直流成份、低频成份少和连0个数最多不超过三个等特点，而对定时信号的恢复十分有利，并已成为CCITT协会推荐使用的基带传输码型之一。为此，本文利用VHDL语言对数据传输系统中的HDB3编码器进行了设计。
基于达到达到达到的信号发生器的源程序-Digital baseband signal transmission is a digital communications system, an important component. In digital communication, there are some occasions, may from time through the carrier modulation and demodulation process, the base-band signal for direct transmission. AMI code signal using alternating inversion, there may be four to zero with the phenomenon, which is not conducive to the receiving end of the timing signal extraction. The HDB3 code because of its non-DC components, low-frequency components, and even a small number of 0 up to more than three characteristics, while the timing signal recovery is very favorable, and has become CCITT Association recommended one of baseband transmission pattern. In this paper the use of VHDL language for data transmission system in the HDB3 encoder has been designed. Based on the signal generator to achieve to reach to reach the source Platform: |
Size: 3072 |
Author:成风 |
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Description: A Costas loop is a phase-locked loop used for carrier phase recovery from suppressed-carrier modulation signals, such as from double-sideband suppressed carrier signals. It was invented by John P. Costas at General Electric in the 1950s. Its invention was described as having had "a profound effect on modern digital communications". Platform: |
Size: 66560 |
Author:dzemo |
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Description: A Costas loop is a phase-locked loop used for carrier phase recovery from suppressed-carrier modulation signals, such as from double-sideband suppressed carrier signals. It was invented by John P. Costas at General Electric in the 1950s. Its invention was described as having had "a profound effect on modern digital communications". Platform: |
Size: 40960 |
Author:dzemo |
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Description: 通过分析8PSK 调制方式的载波恢复、定时恢复算法, 提出了一种适用于新一代数字卫星电视标准DVB S2
的全数字解调算法, 改进了相位频率检测( PFD) 算法以适合于8PSK 解调. 载波恢复采用频率检测( FD) 和相位频率
检测相结合的结构, 跟踪范围超过1 倍符号率. 采用Gardner TED 算法进行定时恢复.-By analyzing the 8PSK modulation carrier recovery, timing recovery algorithm is proposed for a new generation of digital television standard DVB S2 Satellite all-digital demodulation algorithm, improved phase-frequency detector (PFD) algorithm for 8PSK demodulation . carrier recovery using frequency detection (FD) and phase-frequency detector combined structure, tracking more than 100 times the symbol rate range. using Gardner TED algorithm timing recovery. Platform: |
Size: 199680 |
Author:赵亮 |
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Description: 该文采用数字科斯塔斯环并结合数字匹配滤波辅助捕获的方法对T DRSS 中的大多普勒频移进行捕获和消除, 解决了大多普勒情况下载波恢复的难题, 为工程实践提供了一种新思路。-In this paper, using a digital Costas loop in combination with the digital matched filtering auxiliary capture the T-DRSS large Doppler frequency shift to capture and eliminate to solve the problem of recovery of large Doppler downloaded for engineering practice provides a new ideas. Platform: |
Size: 236544 |
Author:jing |
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Description: 软件无线电的matlab程序，包含了一个软件无线电全功能接收机的实现：信号产生、调制与解调、数字滤波和fft变换、载波恢复和脉冲成形，同步恢复，线性均衡，编码Mix‘n 接收机-Software radio matlab program, includes a full-featured software-defined radio receiver implementation: signal generation, modulation and demodulation, digital filtering and fft transform, carrier recovery and pulse shaping, synchronization recovery, linear equalization, coding Mix' n ' reception machine Platform: |
Size: 1209344 |
Author:yuchengpeng |
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