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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 algori
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QPSK modulation system with recover loops-This is a model of a QPSK modulation system for transmission over a bandpass channel with fc = 100 Hz and B = 30 Hz and AWGN at the receiver. SRRC fi lters with excess bandwidth α = 0.18 are employed. Th
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基于硬件定点的完整的costas载波恢复环设计，FPGA设计可以用之参考。包括输入QPSK信号，16倍符号率采样，初始频差2.4KHz，以及低通滤波器的设计等待。最重要的是有本人的注释，易于上手。-Hardware-based fixed-point of complete costas carrier recovery loop design, FPGA reference design can be used. Including input QPSK signal, 16 times th
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This a thesis about CARRIER FREQUENCY OFFSET RECOVERY FOR ZERO-IF OFDM RECEIVERS.rar. The zero intermediate
frequency receiver architecture has now become popular as it has both economic and
size advantages over the traditional superheterodyne ar
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In this paper, a novel demodulation structure in
high-frequency (HF) channel is introduced and studied.Frequency-offset estimation, ractionally spaced adaptive equalization and carrier recovery techniques are involved.Frequency-offset correction is
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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
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软件接收机若干关键技术研究，定时恢复，载波恢复，载波频偏，DDS-Software receiver some key technical research，Timing recovery, the carrier recovery, carrier frequency, partial DDS
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PSK31 Model with Symbol Timing and Carrier Recovery-This model implements a communication standard known as PSK31. The transmit portion of the model can either synthesize the PSK31 signal, or use real world signals that were captured as Wave files.
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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 a
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使用科斯塔环的方法实现基于BPSK调制的载波恢复跟踪(Using Costas loop method to recovery and track carrier frequency of BPSK modulation signal)
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Carrier Frequency Recovery from Sub-Nyquist Samples
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