摘要：
This example shows how to model the control region used in an LTE downlink subframe and its channel structure. It demonstrates how to create a DCI mes 阅读全文
posted @ 2020-08-10 21:41
zzYzz
阅读(342)
评论(0)
推荐(0)
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 阅读全文
posted @ 2020-08-09 21:56
zzYzz
阅读(369)
评论(0)
推荐(0)
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 阅读全文
posted @ 2020-08-09 21:48
zzYzz
阅读(255)
评论(0)
推荐(0)
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 阅读全文
posted @ 2020-08-09 17:46
zzYzz
阅读(197)
评论(0)
推荐(0)
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 阅读全文
posted @ 2020-08-09 17:17
zzYzz
阅读(1018)
评论(0)
推荐(0)
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 阅读全文
posted @ 2020-08-09 16:58
zzYzz
阅读(834)
评论(0)
推荐(0)
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)' 阅读全文
posted @ 2020-08-08 23:23
zzYzz
阅读(1230)
评论(0)
推荐(0)
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 阅读全文
posted @ 2020-08-06 21:42
zzYzz
阅读(340)
评论(0)
推荐(0)
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, 阅读全文
posted @ 2020-08-04 21:42
zzYzz
阅读(426)
评论(0)
推荐(0)
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 阅读全文
posted @ 2020-07-30 21:49
zzYzz
阅读(459)
评论(0)
推荐(0)
浙公网安备 33010602011771号