From: Deterministic construction of Fourier-based compressed sensing matrices using an almost difference set
p
r
M
δ
2
6
64
5
3
125
23
7
128
10
4
625
79
8
256
16
3,125
315
9
512
30
343
60
1,024
52
2,401
301
81
11
121
31
243
26
1,331
226
729
63
13
169
43
2,187
158
2,197
371