matlab生成白噪声

要在MATLAB中生成均匀分布的白噪声信号，可以使用rand函数。rand函数默认产生的是均匀分布的伪随机数，但其均值不为零，所以需要去除信号的直流分量才能符合白噪声定义。以下是一个示例代码：

N = 50000; % 信号的长度
u = rand(1, N) - 0.5; % 生成均匀分布的伪随机数，并去除直流分量
u_mean = mean(u); % 求u(n)的均值
power_u = var(u); % 求u(n)的方差

subplot(211)
plot(u(1:100))
grid on
ylabel('u(n)')

subplot(212)
hist(u, 50)
grid on
ylabel('histogram of u(n)')

这段代码会生成一个长度为N的均匀分布的白噪声信号u(n)，并画出其波形和直方图，以检验其分布情况。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
- *1* [MATLAB产生白噪声](https://blog.csdn.net/weixin_45696224/article/details/122385116)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v92^chatsearchT3_1"}}] [.reference_item style="max-width: 33.333333333333336%"]
- *2* [使用MATLAB产生均匀分布的白噪声信号](https://blog.csdn.net/qq_44420246/article/details/100587091)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v92^chatsearchT3_1"}}] [.reference_item style="max-width: 33.333333333333336%"]
- *3* [matlab产生高斯白噪声](https://blog.csdn.net/qinghuanduji/article/details/113728753)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v92^chatsearchT3_1"}}] [.reference_item style="max-width: 33.333333333333336%"]
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