Mapping two binary bits to one

1 次查看（过去 30 天）
salad9996
salad9996 2019-12-1
评论： Walter Roberson 2019-12-9
I have generate a set of bits 0 and 1,
N=10000;
m=(sign(randn(1,N))+1)/2;
The problem is how do I group the bits? For example
00=-j
01=-1
10=1
11=j

请先登录，再回答此问题。

采纳的回答

Walter Roberson
Walter Roberson 2019-12-2
vals = [-1j, -1, 1, 1j];
m2 = reshape(m, 2, []);
idx = m2(1,:) * 2 + m(2,:) + 1;
output = vals(idx);
  4 个评论
显示 2更早的评论
Walter Roberson
Walter Roberson 2019-12-8
ismember to get an index. Use that as a row index into a 4x2 array.
Walter Roberson
Walter Roberson 2019-12-9
[, idx] = ismember(Symbols, [-1j, -1, 1, 1j]);
bits = [0 0; 0 1; 1 0; 1 1] .';
bit_vector = reshape(bits(:, idx), 1, []);

请先登录，再进行评论。

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Numbers and Precision 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