US 2016/0112973 A1 · Main Synchronization Sequence Design Method for Global Covering Multi-Beam Satellite LTE

Abstract

Disclosed is a main synchronization sequence design method for global covering multi-beam satellite LTE, comprising the follow steps: extending a standard Zadoff-Chu sequence to a generalized Zadoff-Chu sequence so as to obtain an initial candidate main synchronization sequence set of more candidate sequences; gradually narrowing down the candidate main synchronization sequence set according to a selection standard of a main synchronization sequence to obtain a final candidate main synchronization sequence set; and obtaining a main synchronization sequence set with optimal eclectic performance and complexity from the final candidate main synchronization sequence set. According to the present invention, a main synchronization sequence with optimal eclectic performance and calculation complexity can be designed for a global covering same-frequency networking multi-beam satellite LTE system.

Claims19

Dependent claims

A main synchronization sequence design method for global covering multi-beam satellite LTE, comprising the following steps:

(1) extending a standard Zadoff-Chu sequence into a generalized Zadoff-Chu sequence, so as to obtain more sets of initial candidate main synchronization sequences of candidate sequences;
(2) reducing the sets of candidate main synchronization sequences gradually according to the selection criteria for main synchronization sequences, to obtain a final set of candidate main synchronization sequences, obtaining a time domain sequence su(n) by carrying out zero padding and N-point inverse discrete Fourier transform for the sequences in the set of initial candidate main synchronization sequences:
s
u

(
n
)
=
1
N
zc
-
1

∑
k
=
0
N
-
1


d
^
u

(
k
)

exp

(
j


2


π


k


n
N
)
,

n
=
0
,
1
,
…

,
N
-
1
where
,

d
^
u

(
k
)
=
{
d
u

(
k
+
N
zc
-
1
2
-
1
)
k
=
1
,
2
,
…

,
N
2
-
1
d
u

(
k
-
N
+
N
zc
-
1
2
)
k
=
N
2
+
1
,
N
2
+
2
,
…

,
N
-
1
0
k
=
0
,
N
2
;
(3) obtaining a set of main synchronization sequences that has the best trade-off between performance and complexity from the final set of candidate main synchronization sequences.

141 more elements

A system for designing a main synchronization sequence for a global covering multi-beam satellite LTE having a processor configured to define and generate candidate main synchronization sequences, comprising:

a non-transitory computer-readable medium with a sequence of instructions which, when executed by the processor, causes said processor to operate a process to generate and provide candidate main synchronization sequences for a multi-beam satellite LTE, said process comprising:
extending a standard Zadoff-Chu sequence into a generalized Zadoff-Chu sequence, so as to obtain more sets of initial candidate main synchronization sequences of candidate sequences;
reducing the sets of candidate main synchronization sequences gradually according to the selection criteria for main synchronization sequences, to obtain a final set of candidate main synchronization sequences, obtaining a time domain sequence su(n) by carrying out zero padding and N-point inverse discrete Fourier transform for the sequences in the set of initial candidate main synchronization sequences:
s
u

(
n
)
=
1
N
zc
-
1

∑
k
=
0
N
-
1

d
^
u

(
k
)

exp

(
j


2

π


kn
N
)
,
n
=
0
,
1
,
…

,
N
-
1
_
where
,

d
^
u

(
k
)
=
{
d
u

(
k
+
N
zc
-
1
2
-
1
)
k
=
1
,
2
,
…

,
N
2
-
1
d
u

(
k
-
N
+
N
zc
-
1
2
)
k
=
N
2
+
1
,
N
2
+
2
,
…

,
N
-
1
;
and
0
k
=
0
,
N
2
obtaining a set of main synchronization sequences that has the best trade-off between performance and complexity from the final set of candidate main synchronization sequences.

138 more elements

Dependencies are inferred from the claim text.

Main Synchronization Sequence Design Method for Global Covering Multi-Beam Satellite LTE

Life of this patent

Main Synchronization Sequence Design Method for Global Covering Multi-Beam Satellite LTE

Life of this patent

Abstract

Claims19