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Modulation test for OFDM : This is a set of five (5) codes about COFDM (Coded Orthogonal Frequency Division Multiplexing) and coding schemes such as Convolutional, BCH, Reed Solomon (RS) and Low Density Parity Check (LDPC).
The study uses an OFD
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这是一个相对完整的OFDM通信系统的仿真设计，包括编码，调制，IFFT，上下变频，高斯信道建模，FFT，PAPR抑制，各种同步，解调和解码等模块，并统括系统性能的仿真验证了系统设计的可靠性。-This is a relatively complete simulation of the OFDM communication system design, coding, modulation, IFFT, the upper and lower frequency, Gaussian channe
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TolPac=1 输入数据块数
PacketLen=10 每块的符号数目
M=64 调制指数
SNR=20
NFFT=256 Length of IFFTCpLength=16 Length of Prefix NSubc=64 Number of subcarriers freoff=0.5 归一化频偏2.25,phaseoff=0.1 -TolPac = 1 input data blocks the the PACKETLEN 10 of the span per
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单片机PIC16F1947+RFIC SI4463+LCD显示 的数字无线对讲机 控制程序
频率 915MHZ 输出 20DB 波特率50Kbps GFSK 调制幅度25KHZ-SCM PIC16F1947+RFIC SI4463+LCD display digital wireless radio frequency 915MHZ Output 20DB control program baud rate 50Kbps GFSK modulation amplitude 25KHZ
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正交频分复用技术，是多载波调制的一种，文档中有源程序和原理图，有一定数字信号处理知识容易理解-Orthogonal frequency division multiplexing, is a multi-carrier modulation, the document has source code and schematics, a certain knowledge of digital signal processing is easy to understand
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Modulation is a process by which a carrier signal is altered according to information in a message signal. The carrier frequency, denoted Fc, is the frequency of the carrier signal. The sampling rate is the rate at which the message signal is sampled
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详细模拟了调频系统 采用DPSK调制 包含跳频系统的全部模块-Detailed simulation of the FM system using DPSK modulation frequency hopping system includes all of the modules
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正交频分复用（OFDM）是一种通过快速傅里叶变换实现的多载波宽带数字调制技术。相比一般的数字通信系统。它具有频带利用率高和抗多径干扰能力强等优点，因而适合于高速率的无线通信系统。正交频分复用 OFDM 是第四代移动通信的核心技术。论文首先简要介绍了OFDM基本原理。在给出OFDM系统模型的基础上,用MATLAB语言实现了整个系统的计算机仿真并给出参考设计程序。-Orthogonal frequency division multiplexing (OFDM) is a fast Fourier
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Matlab file for simulating a cyclic-prefix (CP) orthogonal-frequency-division-multiplexing (OFDM) system with binary phase-shift keying (BPSK) modulation on each subcarrier. CP-OFDM system includes a repetition code and interleaving across subcarrie
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SSB调制。根据产生的余弦信号，画出相应频率载波下的调制后图形。-SSB modulation. According to the cosine signal generated graphics draw the corresponding frequency carrier modulated under.
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A Hybrid Orthogonal Frequency Division Multiplexing & Code-Division Multiple-Access (OFDM-CDMA)
This is a simulation program for uncoded OFDM-CDMA system with QPSK modulation
and Complex channel modelled by Rayleigh fading. The program is modifie
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OFDM is a frequency-division multiplexing (FDM) scheme used as a digital multi-carrier modulation method. A large number of closely spaced orthogonal sub-carrier signals are used to carry data on several parallel data streams or channels.
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GMSK信号调制和解调的仿真代码，包含一比特差分、2比特差分、鉴频等常用GMSK解调方案。-Modem matlab file for GMSK modulation and demodulation. The demodulation methods including one-bit differential and two-bit differentian decoding and frequency discrimination.
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对DQPSK调制解调技术的FPGA实现进行了比较全面的研究，利用nQpSK调制技术实现了码速20oKbps的调制器。调制载频3.2MHz、带宽18oKHz、带外抑制大于45dB，调制器设计达到预定要求。解调器硬件完成，软件未全部实现，但完成了CIC滤波器、载波跟踪环、位定时同步、并串转换等几个关键模块的设计。对解调器做了实验测试，验证了相关模块设计的正确性，解调器中重要的载波同步功能己能实现-DQPSK modulation and demodulation techniques for FPG
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使用matlab对无线通信中重要的调制技术QPSK进行了仿真设计，包括调制，信道环境模拟，解调，最重要的是解决了无线通信中的载波同步问题，对频偏和相偏进行了估计，也实现了码元同步。-Use matlab important wireless communication QPSK modulation technique simulation design, including modulation, channel environment simulation, demodulation, th
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msk调制，最小频移键控。通过时间来控制，而不是通过相位。-MSK modulation, the minimum frequency shift keying.To control the over time, rather than through phase.
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A Hybrid Orthogonal Frequency Division Multiplexing and Code-Division Multiple-Access (OFDM-CDMA). This is a simulation program for uncoded OFDM-CDMA system with QPSK modulation and Complex channel modelled by Rayleigh fading.
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OFDM is a frequency-division multiplexing (FDM) scheme used as a digital multi-carrier modulation method. A large number of closely spaced orthogonal sub-carrier signals are used to carry data on several parallel data streams or channels.
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OFDM is a frequency-division multiplexing (FDM) scheme used as a digital multi-carrier modulation method. A large number of closely spaced orthogonal sub-carrier signals are used to carry data on several parallel data streams or channels.
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A Hybrid Orthogonal Frequency Division Multiplexing Interleave-Division Multiple-Access (OFDM-IDMA).
This is a simulation program for uncoded OFDM-IDMA system with QPSK modulation
and Complex channel modelled by Rayleigh fading. The program is mo
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