How can i create a sequence?

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Gn Gnk 2019-11-2

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关闭： John D'Errico 2019-11-2

Hello,

i want to create a sequence {xn} , xn ∈ {(±1, ±j)} .I want to create this sequence for n=1 to N=100 .How can i create this in matlab code?

thank you.

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Adam Danz 2019-11-2

编辑：Adam Danz 2019-11-2

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That helps but the problem is still not defined well enough to offer a definite solution.

xn ∈ {(±1, ±i)} means xn is an element of the set [-1-i, -1+i, 1-i, 1+i].

I don't know how n or N come into play, though.

Here's an idea I'm pulling out of thin air:

% Create a column vector n:N +/- [1 +/-i]
n = 1;
N = 100;
xn = reshape((n:N)' + [-1-i, -1+i, 1-i, 1+i],[],1); 

*This uses implicit expansion which requires Matlab r2016b or later.

Gn Gnk 2019-11-2

My problem was that i didnt actually understand the expression xn ∈ {(±1, ±i)} but you answered it for me . I suppose that i should create a 4-QAM signal and repeat this for N=100 times starting from n1=1 with a for- loop .

Thank you for your help and the quick response!

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