Generation of Walsh functions
© 2019 Institute for Communications Engineering, Technical University of Munich
Authors: Carolin Mirschina & Tasnad Kernetzky
Band spreading with the factor
J = 2
G
for
G
=
Selected Walsh funktion
w
j
for
j
=
Side notes:
- orthogonal sequences for
band spreading
- application in CDMA
e.g. UMTS
- generation by means of the
Hadamard matrix H
J
- beginning with H
2
,
then H
4
, then H
8
, etc.
- negating each lower right
submatrix respectively
- line
j
of H
J
yields
the sequence
w
j
,
j
= 0,...,
J
-1