US 8,942,272 B2 · Method and apparatus for enabling signal processing in a multiple antenna repeater

Abstract

Systems and methodologies are described that enable serving cell selection in a wireless network with a multiple antenna repeater operable to support MIMO communications. In one example, a repeater using orthogonal frequency division multiplexing on the downlink can be equipped to receive, by one or more receive antennas, one or more signals using one or more radio frequency (RF) isolation schemes. The repeater can further be equipped to amplify and delay the one or more signals using one or more combination schemes. Moreover, the repeater can be equipped to transmit, by one or more transmit antennas, the amplified and delayed one or more signals, wherein at least one of the one or more receive antennas or the one or more transmit antennas includes two or more antennas.

Claims56

Dependent claims

A method for wireless communications for a repeater in a communication system using orthogonal frequency division multiplexing on the downlink, comprising:

receiving, by one or more receive antennas, one or more signals using one or more radio frequency (RF) isolation schemes;
amplifying and delaying the one or more signals using one or more combination schemes;
and
transmitting, by one or more transmit antennas, the amplified and delayed one or more signals, wherein at least one of the one or more receive antennas or the one or more transmit antennas includes two or more antennas,
wherein the one or more combination schemes are determined based on a number of the one or more receive antennas and a number of the one or more transmit antennas, and
wherein the one or more combination schemes are based on an equation:
y
⁡
(
m
)
=
∑
n
=
1
N
⁢
x
n
⁡
(
t
-
D
n
,
m
)
·
A
n
,
m
,
wherein n=1, . . . , N and N is the number of the one or more receive antennas, xn is a received signal on an n-th receive antenna of the one or more receive antennas, y(m) is a transmitted signal on an m-th transmit antenna of the one or more transmit antennas where m=1, . . . , M and M is the number of the one or more transmit antennas, Dn,m is a delay applied to a signal received on the n-th receive antenna at an m-th transmit antenna, and An,m is a scaling factor applied to a signal received on the n-th receive antenna at the m-th transmit antenna.

33 more elements

A repeater for wireless communications in a communication system using orthogonal frequency division multiplexing on the downlink, comprising:

means for receiving, by one or more receive antennas, one or more signals using one or more radio frequency (RF) isolation schemes;
means for amplifying and delaying the one or more signals using one or more combination schemes;
and
means for transmitting, by one or more transmit antennas, the combined one or more signals, wherein at least one of the one or more receive antennas or the one or more transmit antennas includes two or more antennas,
wherein the one or more combination schemes are determined based on a number of the one or more receive antennas and a number of the one or more transmit antennas, and
wherein the one or more combination schemes are based on an equation:
y
⁡
(
m
)
=
∑
n
=
1
N
⁢
x
n
⁡
(
t
-
D
n
,
m
)
·
A
n
,
m
,
wherein n=1, . . . , N and N is the number of the one or more receive antennas, xn is a received signal on an n-th receive antenna of the one or more receive antennas, y(m) is a transmitted signal on an m-th transmit antenna of the one or more transmit antennas where m=1, . . . , M and M is the number of the one or more transmit antennas, Dn,m is a delay applied to a signal received on the n-th receive antenna at an m-th transmit antenna, and An,m is a scaling factor applied to a signal received on the n-th receive antenna at the m-th transmit antenna.

33 more elements

At least one processor configured to facilitate wireless communications for a repeater in a communication system using orthogonal frequency division multiplexing on the downlink, comprising:

a first module for receiving, by one or more receive antennas, one or more signals using one or more radio frequency (RF) isolation schemes;
a second module for amplifying and delaying the one or more signals using one or more combination schemes;
and
a third module for transmitting, by one or more transmit antennas, the amplified and delayed one or more signals, wherein at least one of the one or more receive antennas or the one or more transmit antennas includes two or more antennas,
wherein the one or more combination schemes are determined based on a number of the one or more receive antennas and a number of the one or more transmit antennas, and
wherein the one or more combination schemes are based on an equation:
y
⁡
(
m
)
=
∑
n
=
1
N
⁢
x
n
⁡
(
t
-
D
n
,
m
)
·
A
n
,
m
,
wherein n=1, . . . , N and N is the number of the one or more receive antennas, xn is a received signal on an n-th receive antenna of the one or more receive antennas, y(m) is a transmitted signal on an m-th transmit antenna of the one or more transmit antennas where m=1, . . . , M and M is the number of the one or more transmit antennas, Dn,m is a delay applied to a signal received on the n-th receive antenna at an m-th transmit antenna, and An,m is a scaling factor applied to a signal received on the n-th receive antenna at the m-th transmit antenna.

33 more elements

A computer program product, comprising:

a non-transitory computer-readable medium comprising:
a first set of codes for causing a computer to receive, by one or more receive antennas, one or more signals using one or more radio frequency (RF) isolation schemes;
a second set of codes for causing the computer to amplify and delay the one or more signals using one or more combination schemes;
and
a third set of codes for causing the computer to transmit, by one or more transmit antennas, the amplified and delayed one or more signals, wherein at least one of the one or more receive antennas or the one or more transmit antennas includes two or more antennas,
wherein the one or more combination schemes are determined based on a number of the one or more receive antennas and a number of the one or more transmit antennas, and
wherein the one or more combination schemes are based on an equation:
y
⁡
(
m
)
=
∑
n
=
1
N
⁢
x
n
⁡
(
t
-
D
n
,
m
)
·
A
n
,
m
,
wherein n=1, . . . , N and N is the number of the one or more receive antennas, xn is a received signal on an n-th receive antenna of the one or more receive antennas, y(m) is a transmitted signal on an m-th transmit antenna of the one or more transmit antennas where m=1, . . . , M and M is the number of the one or more transmit antennas, Dn,m is a delay applied to a signal received on the n-th receive antenna at an m-th transmit antenna, and An,m is a scaling factor applied to a signal received on the n-th receive antenna at the m-th transmit antenna.

34 more elements

Dependencies are inferred from the claim text.

Method and apparatus for enabling signal processing in a multiple antenna repeater

Life of this patent

Method and apparatus for enabling signal processing in a multiple antenna repeater

Life of this patent

Abstract

Claims56