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Table 1 Correlation properties for codes of length 32

From: Performance evaluation of chaotic spreading sequences on software-defined radio

Codes of length 32 for 5 users

Sequence

FoM

Pearson

Mean BER

Walsh

0.1572

0

0.0200

Tent

0.3008

−0.1481

0.0522

Quadratic

4.2325

0.0790

0.0408

2D Hénon

0.0765

0.1878

0.0098

2D Duffing

0.0586

−0.0242

5,686 ·10−4

3D Chua

0.1709

0

0.0055

Codes of length 32 for 10 users

Sequence

FoM

Pearson

Mean BER

Walsh

0.1950

0

0.0137

Tent

0.5026

0.1546

0.0402

Quadratic

3.9574

0.0452

0.0271

2D Hénon

0.0905

0.4431

0.0139

2D Duffing

0.0608

−0.0287

6.4300 ·10−4

3D Chua

0.1779

−0.1000

0.0234

Codes of length 32 for 16 users

Sequence

FoM

Pearson

Mean BER

Walsh

0.1974

0

0.0183

Tent

0.4538

0.2802

0.0671

Quadratic

2.5046

0.5762

0.2008

2D Hénon

0.0989

0.4092

0.0231

2D Duffing

0.0621

−0.0301

3.5458e ·10−5

3D Chua

0.1823

−0.0625

0.0033