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qpsk_demod_use_FPGA
根据软件无线电的思想，提出了一种新颖的数字信号处理算法，对QPSK信号的相位进行数字化处理，从而实现对QPSK信号的解调.该算法允许收发两端载波存在频差，用数字锁相实现收发端载波的同步，在频偏较大的情况下，估算频偏的大小，自适应设置环路的带宽，实现较短的捕获时间和较好的信噪性能。整个设计基于XILINX公司的ISE开发平台，并用Virtex-II系列FPGA实现。用FPGA实现调制解调器具有体积小、功耗低、集成度高、可软件升级、扰干扰能力强的特点，符合未来通信技术发展的方向。(According to the idea of software radio, a novel digital signal processing algorithm, the phase of QPSK digital signal processing, enabling the demodulation of QPSK signals. This algorithm allows the sending and receiving ends of the carrier frequency difference exists, using digital phase-locked to achieve synchronization of sending and receiving end of the carrier, in the case of large frequency offset, frequency offset estimation of the size, adaptive set the loop bandwidth to achieve shorter acquisition time and better noise performance. The whole design is based on the company XILINX ISE development platform, and Virtex-II series with the FPGA. FPGA realization of a modem with a small size, low power consumption, high integration, software upgrades available, the characteristics of strong interference interference, in line with the future direction of ICT development.)
- 2010-12-06 10:52:36下载
- 积分：1
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DE2_PS2_Example
PS2 Module for Altera DE2
- 2017-06-20 21:04:32下载
- 积分：1
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6通道正弦波发生器，产生频率，相位，幅值都可调的正弦波形...
6通道正弦波发生器，产生频率，相位，幅值都可调的正弦波形-6-channel sine wave generator, resulting in frequency, phase, amplitude of the sinusoidal waveform are adjustable
- 2022-10-22 04:00:03下载
- 积分：1
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DATA_Scramble
扰码器的FPGA实现，选择的扰码器规格为15位移位寄存器。(FPGA scrambler, scrambler specifications for a 15 bit shift register.)
- 2021-01-16 19:28:46下载
- 积分：1
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Reed-Solomon-RS-ENCODE-DECODE
支持GF(2^n)域的rs编解码，可直接修改参数实现不同方式的RS编码和解码(This program is an encoder/decoder for Reed-Solomon codes.)
- 2020-12-31 09:48:58下载
- 积分：1
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reference
早迟门（early late gate），比特同步算法，该文档详细的说明了早迟门算法的原理以及具体的实现步骤(Early late gate (early late gate), bit synchronization algorithm, the document explains in detail the principles of early-late gate method and the specific implementation steps)
- 2015-04-30 15:06:04下载
- 积分：1
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CodedLOCK
基于FPGA的电子密码锁设计与实现，语言是VHDL语言，有注释(FPGA-based design and implementation of electronic locks, language is VHDL language, annotated)
- 2013-08-27 21:37:06下载
- 积分：1
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src
说明： 假设每个从设备中有可访问APB寄存器16个，位宽均为32比特，16个寄存器的访问地址计算方式为 基址 + 寄存器编号左移２位（byte 偏移）(Assuming that there are 16 accessible APB registers in each slave device, the bit width is 32 bits, and the access address of 16 registers is calculated by base address + register number left shift 2 bits (byte offset).)
- 2020-12-15 13:49:14下载
- 积分：1
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my_lift
电梯控制，包括楼层按键相应，显示上下状态。(Elevator control, including the floors of the corresponding button to show the whole state.)
- 2008-04-24 10:15:52下载
- 积分：1
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AES 128 Crypto Core
Mini AES
Advanced Encryption Standard (AES) implementation with small area/resources utilization.
Features
- Encryption and Decryption unit in single core.
- 2023-01-28 07:05:04下载
- 积分：1
