Random Stream and mt19937ar with seed

23 次查看（过去 30 天）
DM
DM 2015-4-27
回答： Daylon Hester 2021-8-11
Hello,
The following object is built in by MATLAB
comm.AWGNChannel('NoiseMethod', 'Signal to noise ratio (SNR)',...
'SNR', snrdB, 'RandomStream', 'mt19937ar with seed', 'Seed', 67);
I am wondering what is the use of
'RandomStream', 'mt19937ar with seed', 'Seed', 67
I have seen this expression being used in many objects other than
comm.AWGNChannel.
Thanks

请先登录，再回答此问题。

采纳的回答

Sebastian Castro
Sebastian Castro 2015-4-27
It's a way of generating random numbers. Look at the first example below: http://www.mathworks.com/help/matlab/ref/randstream.html
Also, to see some other types you can refer to this: http://www.mathworks.com/help/matlab/ref/randstream.list.html
- Sebastian

更多回答（1 个）

Daylon Hester
Daylon Hester 2021-8-11
The argument following 'RandomStream' is the specific random number generator algorithm used. The default is called Mersenne Twister, but it is selected with 'mt19937ar'.
The seed number allows you to repeat the same number stream.

类别

在 Help Center 和 File Exchange 中查找有关 Random Number Generation 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by