US 8,582,680 B2Granted

MIMO codebook generation

AssigneeLG Electronics Inc.

InventorsBin-Chul Ihm, Sung-Ho Park, Seung-Hyun Kang, Wook-Bong Lee, Moon-Il Lee

Life of this patent

Estimating the term…

Abstract

Particular codebook entries used for a MIMO system of a lower dimension (i.e., having a relatively low number of antennas) can be used to generate a codebook for a MIMO system of a higher dimension (i.e., having a relatively high number of antennas). The entries in rank 1 of the codebook related to the MIMO system having four transmit antennas are used to newly construct entries for rank 1 through rank 8 of two base matrices for a MIMO base codebook related to eight transmit antennas.

Claims10

Dependent claims

A method of transmitting data by a transmitting side using a multi input multi output (MIMO) system having eight transmit antennas, the method comprising:

performing precoding on data to be transmitted, the precoding performed using a precoding matrix selected from a codebook related to the eight transmit antennas;
and
transmitting the precoded data to a receiving side through the eight transmit antennas,
wherein the codebook comprises two base matrices which are defined as V8(:,:,4) and V8(:,:,5) having a form of:
V
⁢
⁢
8
⁢
(
:
,
:
,
4
)
=
1
4
⁡
[
1
0
1
0
1
0
1
0
0
1
0
1
0
1
0
1
1
0
-
1
0
j
0
-
j
0
0
1
0
-
1
0
j
0
-
j
1
0
1
0
-
1
0
-
1
0
0
1
0
1
0
-
1
0
-
1
1
0
-
1
0
-
j
0
j
0
0
1
0
-
1
0
j
0
j
]
,
⁢
V
⁢
⁢
8
⁢
(
:
,
:
,
5
)
=
1
4
⁡
[
1
0
1
0
1
0
1
0
0
1
0
1
0
1
0
1
1
+
j
2
0
-
1
-
j
2
0
-
1
+
j
2
0
1
-
j
2
0
0
1
+
j
2
0
-
1
-
j
2
0
-
1
+
j
2
0
1
-
j
2
j
0
j
0
-
j
0
-
j
0
0
j
0
j
0
-
j
0
-
j
-
1
+
j
2
0
1
-
j
2
0
1
+
j
2
0
-
1
-
j
2
0
0
-
1
+
j
2
0
1
-
j
2
0
1
+
j
2
0
-
1
-
j
2
]
or
V
⁢
⁢
8
⁢
(
:,:,
⁢
4
)
=
1
4
⁡
[
1
1
1
1
0
0
0
0
1
-
1
j
-
j
0
0
0
0
1
1
-
1
-
1
0
0
0
0
1
-
1
-
j
j
0
0
0
0
0
0
0
0
1
1
1
1
0
0
0
0
1
-
1
j
-
j
0
0
0
0
1
1
-
1
-
1
0
0
0
0
1
-
1
-
j
j
]
,
⁢
V
⁢
⁢
8
⁢
(
:,:,
⁢
5
)
=
1
4
[
⁢
1
1
1
1
1
+
j
2
-
1
-
j
2
-
1
+
j
2
1
-
j
2
1
1
-
1
-
1
-
1
+
j
2
1
-
j
2
1
+
j
2
-
1
-
j
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
⁢
⁢
⁢
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
+
j
2
-
1
-
j
2
-
1
+
j
2
1
-
j
2
1
1
-
1
-
1
-
1
+
j
2
1
-
j
2
1
+
j
2
-
1
-
j
2
]
.

477 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/659,856Filed 24 Oct 2012 · continuation
Priority: KR 10-2010-002442118 Mar 2010
Published: US 2013/0128999 A123 May 2013
Granted: 12 Nov 2013
Term ends: Not estimatedThe source records don’t support an estimate.

Classification11 codes

H04B 7/0456
MIMO systems: selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
H04B 7/024
Site diversity; Macro-diversity: co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input…
H04B 7/0481
Special codebook structures directed to feedback optimisation: using subset selection of codebooks
H04B 7/0487
Taking channel rank into account: codebooks having a nested structure

Family

Application61/167,858Us provisional application · filed 8 Apr 2009
Application61/172,766Us provisional application · filed 26 Apr 2009
Application61/173,211Us provisional application · filed 28 Apr 2009
Application61/177,283Us provisional application · filed 12 May 2009
Application61/219,336Us provisional application · filed 22 Jun 2009
Application61/219,735Us provisional application · filed 23 Jun 2009
Application61/222,455Us provisional application · filed 1 Jul 2009
Application61/222,906Us provisional application · filed 2 Jul 2009
Application61/223,382Us provisional application · filed 7 Jul 2009
Application61/224,040Us provisional application · filed 8 Jul 2009
Application12/756,085Parent of this continuation · filed 7 Apr 2010
US 2013/0128999 A1Pre-grant publication · published 23 May 2013
US 8,325,843 B2Parent of this continuation
US 2010/0260243 A1Published application
US 8,582,680 B2This patent

From the US filing history. Foreign family members aren’t listed.

Timeline

Citations

Open elsewhere

patentgrep

Loading patent…

Abstract

Facts

Application

13/659,856Filed 24 Oct 2012 · continuation

Priority

KR 10-2010-002442118 Mar 2010

Published

US 2013/0128999 A123 May 2013

Granted

12 Nov 2013

Term ends

Not estimatedThe source records don’t support an estimate.

Classification11 codes

H04B 7/0456
MIMO systems: selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
H04B 7/024
Site diversity; Macro-diversity: co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input…
H04B 7/0481
Special codebook structures directed to feedback optimisation: using subset selection of codebooks
H04B 7/0487
Taking channel rank into account: codebooks having a nested structure

Family

Application61/167,858Us provisional application · filed 8 Apr 2009

Application61/172,766Us provisional application · filed 26 Apr 2009

Application61/173,211Us provisional application · filed 28 Apr 2009

Application61/177,283Us provisional application · filed 12 May 2009

Application61/219,336Us provisional application · filed 22 Jun 2009

Application61/219,735Us provisional application · filed 23 Jun 2009

Application61/222,455Us provisional application · filed 1 Jul 2009

Application61/222,906Us provisional application · filed 2 Jul 2009

Application61/223,382Us provisional application · filed 7 Jul 2009

Application61/224,040Us provisional application · filed 8 Jul 2009

Application12/756,085Parent of this continuation · filed 7 Apr 2010

US 2013/0128999 A1Pre-grant publication · published 23 May 2013

US 8,325,843 B2Parent of this continuation

US 2010/0260243 A1Published application

US 8,582,680 B2This patent

From the US filing history. Foreign family members aren’t listed.