Index in position 2 exceeds array bounds

Hello everyone,

I'm attempting to load a sample transmitted using my BladeRF software defined radio into Matlab. I am using a function title load_csv.m that obtained from this url: https://github.com/Nuand/bladeRF/commit/2c4c839fa7db0a69c9c8386476bfb3a65d246679

The function looks like this:

function [signal, signal_i, signal_q] = load_csv(filename)
csv = load(filename);
signal_i = csv(:,1)./2048.0;
signal_q = csv(:,2)./2048.0;
signal = signal_i + 1j .* signal_q;
end

Below is the syntax I use to load the file onto Matlab

rxSignal = load_csv('tmp_samples_rx.csv');

When I attempt to load the file using the function, I receive this error:

Index in position 2 exceeds array bounds.

Error in load_csv (line 3)

signal_i = csv(:,1)./2048.0;

Error in wright2 (line 32)

rxSignal = load_csv('tmp_samples_rx.csv');

The file I wish to load is a 60000x1 complex double column vector. Below is a snippet of how it appears in excel:

4027.93116292808 - 3784.63252459062i

2816.19836118964 + 3765.05233953550i

-1521.08335162319 + 1152.10900371074i

788.234574060302 - 344.859698124550i

2809.99684023969 - 17.7521355649638i

3349.50894392745 - 3971.60199301312i

2397.26710342550 - 828.867857375982i

-2624.74960536111 + 1626.75805561092i

2124.63229460262 - 2523.10793458054i

-2056.09513835153 + 6021.24174720362i

2533.24506339406 + 388.808184162790i

-1076.78779180958 - 2404.97342447914i

-1457.61704657447 + 1359.60948568635i

-1363.24345612490 + 1872.82516921698i

18.1981623649926 + 2612.84929535454i

3254.97080667371 + 3951.45426258370i

-877.535021284633 - 1670.26243972526i

1216.34789611091 - 805.351743676328i

-1968.04412147153 + 5724.45384652862i

-8.31725915849152 + 451.354464010482i

Does anyone know what I can do to resolve this issue?

Any help received is much appreciated.

V/r,

Brian W

Answer 1

[Walter Roberson]

4027.93116292808 - 3784.63252459062i

That is not two columns: that is a single column that is complex-valued.

signal = csv ./ 2048;     %no need for the other steps