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Amplitude_mod_m
- fm=input( Enter the message signal frequency fm= ) fc=input( Enter the carrier frequency fc= ) Am=input( Enter the message signal amplitude Am= ) Ac=input( Enter the carrier signal frequency Ac= ) n=input( Enter the no of DFT points: )
FSK
- 预先设定载频、采样率、码速率、信息代码个数和信噪比等参数，进行FSK信号的调制解调。-Pre-set carrier frequency, sampling rate, bit rate, information, code number and signal to noise ratio and other parameters for FSK signal modulation and demodulation.
DSB
- 载波频率不同的多个DSB信号混合后，在不知道源信号的情况下，将混合后的DSB信号分离出来-A different carrier frequency signals of multiple DSB after mixing the source signals without knowing the circumstances, would be a mixture of the DSB signal separation
tiaozhi
- 产生一组随机的0、1二进制比特序列，分别用2ASK, 2FSK, 2PSK和2DPSK四种调制方式把它们调制到一个较高的载频上,结果给出前8个比特所对应的时域波形。-0,1 generate a set of random binary bit sequence, respectively 2ASK, 2FSK, 2PSK and 2DPSK four kinds of modulation modulation them to a higher carrier frequency, the r
wuxianshibie
- 装置中阅读器、应答器均有无线传输汉字的功能，载波频率≤5MHz，调制方式任选。不得使用现有射频识别卡或用于识别的专用芯片。装置中的耦合线圈为圆形空芯线圈，用直径不大于1mm的漆包线或有绝缘外皮的导线密绕10圈制成。线圈直径为6.6±0.5cm（可用直径6.6 cm左右的易拉罐作为骨架，绕好取下，用绝缘胶带固定即可）。线圈间的介质为空气。两个耦合线圈最接近部分的间距定义为D。 阅读器、应答器只能使用耦合线圈耦合，不得使用其他耦合方式。 阅读器采用外接单电源供电，具有通过无线方式实现“写”与
OFDMsystem
- 正交频分复用技术是近年来发展起来的新技术,在高速无线数据传输领域有很大的应用前景。文章在分析和总结相关文献的基础上,介绍了正交频分复用(OFDM)技术的发展历史,讨论了正交频分复用技术的基本原理和实现方法。通过分析表明,在高速无线通信中OFDM对于消除符号间干扰(ISI),降低系统的复杂度等方面具有很大优势。正交频分复用(OFDM)是一种多载波宽带数字调制技术,它能有效地克服传输中的多径干扰和消除码间串扰,适合于高速率的地面信道视频传输。本文就OFDM技术进行了较为详尽的分析,并对OFDM的传输
Filter-based_single-carrier_frequency_domain_equal
- 研究了基于滤波器组的单载波频域均衡技术的基本原理和实现方法,通过系统对比基于滤波器组的方法与基于FFT方法的异同之处,从其产生的机理上阐明了基于滤波器组的单载波频域均衡技术能够克服FFT 方式的主要缺点的原因-Of filter-based single-carrier frequency domain equalization technology, the basic principle and method, through the system, filter-based approa
Sampling
- 利用前端高速ADC来覆盖给定的监视带宽, 在粗略估计载频并考虑一定的保护带, 利用带通信号的均匀欠采样定理行内插抽取, 以获得欠采样后的信号。-Using high-speed ADC front-end to cover a given monitor bandwidth, carrier frequency at a rough estimate and considering some of the protection zone, use less uniform bandpass sa
producefsk
- 自编程序产生FSK信号的函数源代码，可以实现函数调用，载波频率可以修改的！-FSK signal generated by ourselves to a function of the source code, function call, the carrier frequency can be modified!
4
- ：载波频率偏移是OFDM系统实现的关键问题之一。分析了OFDM 系统载频偏移估计的2 种算法，即利用循环前缀和训练序列方法。它们均为最大似然估计方法。分别讨论了它们的基本 思想、实现方法和仿真结果。可以看出基于循环前缀算法复杂度较小，精度不高，而基于训练序列 的算法有较高的估计精度，但降纸了系统传输效率。-Abstract：Carrier frequency ofset is one of the key problems in OFDM system．Two foundationa
GUItuxingjiemian
- 调制进制：载波频率：信道信噪比 两载频的差值：信道信噪比-Band modulation: carrier frequency: channel SNR difference between the two carrier frequencies: Channel SNR
pi4-QDPSK
- pi/4-qdpsk调制解调程序，能有效地进行差分解调和鉴频器解调，在一些不易提取载波的场合很有用。因此，利用仿真来研究系统是必要的。-pi/4-qdpsk modulation and demodulation process, can effectively reconcile the difference solution frequency discriminator demodulation, carrier extraction in a number of difficult si
frequency_offset_concellication_of_OFDM
- ofdm系统的载波频偏干扰消除程序。算法在程序中有详尽的注释。算法性能优良。-ofdm system carrier frequency offset interference cancellation process. Algorithm are detailed in the program notes. Algorithm is excellent.
timingsyn_cfo
- 用SCA算法实现时间同步和载波频率偏移。载波频率偏移通过训练序列实现-SCA algorithm with time synchronization and carrier frequency offset. Carrier frequency offset achieved by training sequence
SPWM_ASM
- 使用汇编语言要生成PWM，通过设定基波频率，载波频率，最大分辨率参数生成点数步进角度（弧度）等，生成在相PWM表的一个软件-Using assembly language to generate PWM, by setting fundamental frequency, carrier frequency, the maximum resolution parameter generation step angle points (in radians), etc., generated in
SPWM_C
- 使用C语言生成WPWM所需要的正弦抽样值，通过设定基波频率，载波频率，最大分辨率，每行点数，控制点数来生成SPWM表格-Using the C language generation WPWM need sine sample value, by setting the fundamental wave frequency, carrier frequency, maximum resolution, each line of points, control points to generate
generate_SPWM
- 载波频率15627.77Hz，产生脉宽调制的波形，用mega161写的程序-Carrier frequency 15627.77Hz, generate PWM waveforms, with written procedures mega161
timing
- sc-fde（单载波频域均衡）系统的定时功能仿真-sc-fde (single carrier frequency domain equalization) system timing functional simulation
10[1].1.1.66.2227
- In this paper, we present a novel data-based method for simultaneous Maximum Likelihood (ML) symbol and carrier-frequency o畇et estimation in Orthogonal frequencydivision multiplexing (OFDM) systems. Statistical properties introduced by the cyclic
Morelli_1999
- An effecient algorithm has been proposed by Schmidl and Cox for carrier frequency estimation in orthogonal frequency-division multiplexing systems. The scheme is based on the transmission of a training symbol composed of two identical halves