随笔分类 - DSP
摘要：Three different detectors for recovering the transmitted data symbols andevaluate their performance for Rayleigh fading and additive white Gaussian no
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摘要：This example shows how to find the root mean square (RMS) value of a sine wave, a square wave, and a rectangular pulse train using rms. The waveforms
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摘要：The discrete Fourier transform, or DFT, is the primary tool of digital signal processing. The foundation of the product is the fast Fourier transform
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摘要：he power of a signal is the sum of the absolute squares of its time-domain samples divided by the signal length, or, equivalently, the square of its R
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摘要：Hilbert 变换 Hilbert 变换可用于形成解析信号。解析信号在通信领域中很有用，尤其是在带通信号处理中。工具箱函数 hilbert 计算实数输入序列 x 的 Hilbert 变换，并返回相同长度的复数结果，即 y = hilbert(x)，其中 y 的实部是原始实数数据，虚部是实际 Hil
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摘要：具有指定采样率的偶数长度输入 对于一个采样率为 1 kHz 的偶数长度信号，分别使用 fft 和 periodogram 获得其周期图。比较二者的结果。 创建一个含 N(0,1) 加性噪声的 100 Hz 正弦波信号。采样频率为 1 kHz。信号长度为 1000 个采样点。使用随机数生成器的默认设置
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摘要：生成以 1024 kHz 采样的 chirp 信号的 1024 个采样点。 chirp 信号的初始频率为 50 kHz，采样结束时达到 100 kHz。添加高斯白噪声，使信噪比为 40 dB。 nSamp = 1024; Fs = 1024e3; SNR = 40; t = (0:nSamp-1)'
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摘要：IIR Filter Design One of the drawbacks of FIR filters is that they require a large filter order to meet some design specifications. If the ripples are
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摘要：FIR Filter Design The ideal lowpass filter is one that leaves unchanged all frequency components of a signal below a designated cutoff frequency, ωc,
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摘要：Introduction Filters can be used to shape the signal spectrum in a desired way or to perform mathematical operations such as differentiation and integ
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摘要：Comparing Signals with Different Sampling Rates The first and the second subplot show the template signals from the database. The third subplot shows
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摘要：Comparing Signals with Different Sampling Rates The first and the second subplot show the template signals from the database. The third subplot shows
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摘要：ntroduction In practical applications, many signals are nonstationary. This means that their frequency-domain representation (their spectrum) changes
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摘要：Introduction Frequency-domain analysis is a tool of utmost importance in signal processing applications. Frequency-domain analysis is widely used in s
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