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ofdm_full_exp
- Orthogonal frequency-division multiplexing (OFDM), essentially identical to coded OFDM (COFDM) and discrete multi-tone modulation (DMT), is a frequency-division multiplexing (FDM) scheme used as a digital multi-carrier modulation method. A large numb
On-the-Design-of-Iterative-FDE-Receivers-for-OQAM
- This paper considers receiver designs for SC-FDE schemes (Single-Carrier with Frequency-Domain Equalization) employing M-ary OQAM signals (Offset Quadrature Amplitude Modulation). It is shown that the interference between the in-phase (I) and
qpsk
- 为了使数字信号在有限带宽的高频信道中传输，必须对数字信号进行载波调制。就频带利用率和抗噪声性能（或功率利用率）两个方面来看， QPSK系统最佳。QPSK是利用载波的四种不同相位差来表征输入的数字信息，是四进制移相键控（QPSK）。本项目用MATLAB软件对四进制移相键控信号在AWQN信道中传输进行了建模和仿真，通过对仿真得到的误码率和理论误码率进行比较和分析，从而证明了MATLAB软件仿真QPSK调制解调的可行性。-In order to make the digital signal in t
System-Simulation-0f-CDMA2000
- 本程序仿真CDMA2000的复扩频过程,只考虑导频信道和一个业务信道,假设同步已建立，接收端能产生同频同相相干载波,整个仿真过程在基带中进行.-The simulation program CDMA2000 complex spread spectrum, considering only the pilot channel and a business channel, and assume that synchronization has been established, the rece
fwdmalawmc
- Abstract—In this paper, we study the joint estimation of inphase and quadrature-phase (I/Q) imbalance, carrier frequency offset (CFO), and channel response for multiple-input multipleoutput (MIMO) orthogonal frequency division multiplexing (O
matlabcodeandbasepaper
- Abstract—In this paper, we study the joint estimation of inphase and quadrature-phase (I/Q) imbalance, carrier frequency offset (CFO), and channel response for multiple-input multipleoutput (MIMO) orthogonal frequency division multiplexing (O
acquisition
- acquisition.m is a program to find satellites and carrier frequency and code phase
SPWM
- 内包含完整DSP2812产生三相SPWM波形完整工程，该工程利用EVA下面的通用定时器T1工作于连续增/减计数模式，产生三角载波，载波频率为3000Hz，调制波形正弦波的频率为50Hz。DSP开发者可以利用该工程学习了解到SPWM波形产生的原理，掌握产生三相SPWM波形的方法。-It contains the complete DSP2812 produce the complete works of the three-phase SPWM waveform, the project cont
pic2codea
- 正弦波脉宽调制技术（SPWM）三相正弦调制波与双极性三角载波设计与实现-Sinusoidal pulse width modulation (SPWM) three-phase sinusoidal modulation wave bipolar triangular carrier Design and Implementation
chuanb
- 在qpsk调制模块中，需将码元转换成两位并行的码元输出，它有四种存在形式，正好对应qpsk的四相载波，实现qpsk调制。-Qpsk modulation module code converted into two parallel bit output, which has four in a form exactly corresponds to the qpsk The four-phase carrier to achieve qpsk modulation.
CS8955_RDS
- RDS(Radio Data System)数据广播系统是将数字信号调制到调频波段 (87.5~108MHz)并以广播的形式发送的一种信号传输系统。这种传输模式在北美 和欧洲得到了采用，而且得到越来越多的其他国家的关注。在北美和欧洲 都有 相应的标准，即RBDS 和RDS。 传输数据时，数据加载到57KHz 的副载波频段。副载波经过调制以适应固定 的双相编码信号。这个副载波经过抑制以避免调制后的数据在锁相环立体声解码 器中产生混叠同时还要与德国同样采用57KHz 频率作为
AM
- AM MODULATION: It is matlab code for AM,DSBSC,SS B with carrier ,ISB, & multitone AM & their spectrum. AM is a technique used in electronic communication, most commonly for transmitting information via a radio carrier wave. AM works by varying the st
M8QAMzipa
- 利用matlab仿真软件，实现8QAM调制。在实现时采用正交调幅的方式,某星座点在I坐标上的投影去调制同相相载波的幅度,在Q坐标上的投影去调制正交载波的幅度,然后将2个调幅信号相加就是所需的调相信号。 已通过测试。 -Matlab simulation software to achieve 8QAM modulation. Implemented using quadrature amplitude modulation, phase carrier amplitude modulated
sine-wave
- 单片机实现两路正弦波 运用STC单片机的PCA模块实现的正弦波 可以调频、调幅、调相、调载波。 对初学者有很大的帮助，如有问题，可发邮件至xiaokuan133@163.com-The use of STC SCM PCA module to achieve the sine wave frequency modulation, amplitude modulation, phase modulation, the modulated carrier. A great help fo
AM
- this file suppressed carrier AM with freq and phase offset
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
IJEEE
- Comparative Study on Carrier Overlapping PWM Strategies for Three phase Five Level Diode Clamped and cascaded Inverters
pll
- 单载波 BPSK QPSK调制下的PLL功能实现 实现频率相位的跟踪-Single carrier BPSK QPSK modulation the PLL frequency phase tracking
Bpsk
- In PSK, the phase of the carrier changes between different phases determined by the logic states of the input bit stream.-In PSK, the phase of the carrier changes between different phases determined by the logic states of the input bit stream.
TI_FSK_demodulation
- 数字信号的传输方式分为基带传输和带通传输，在实际应用中，大多数信道具有带通特性而不能直接传输基带信号。为了使数字信号在带通信道中传输，必须使用数字基带信号对载波进行调制，以使信号与信道的特性相匹配。这种用数字基带信号控制载波，把数字基带信号变换为数字带通信号的过程称为数字调制。通常使用键控法来实现数字调制，比如对载波的振幅、频率和相位进行键控-The transmission mode of the digital signal is divided into a base-band trans