Channel-state-information reference signals for advanced wireless systems

Patent metadata

Field	Value
Publication number	US-2016248562-A1
Application number	US-201614997356-A
Country	US
Kind code	A1
Filing date	Jan 15, 2016
Priority date	Feb 20, 2015
Publication date	Aug 25, 2016
Grant date	—

Abstract

A mobile station includes a receiver configured to receive containing a complex-valued modulation symbol from a base station, a processor configured to extract the complex-valued modulation symbol from the signal, wherein in response to being configured with code-division multiplex-4 (CDM-4), the complex-valued modulation symbol is mapped using a reference signal sequence. A base station includes a processor configured to generate a reference signal sequence for each subcarrier and OFDM symbol, and in response to being configured with code-division multiplex-4 (CDM-4), map a reference signal sequence to the complex-valued modulation symbols. Other embodiments including a method for performing communication on multiple input multiple output (MIMO) radio links are also disclosed.

First claim

What is claimed:

1 . A mobile station comprising:
a receiver configured to receive a signal including a complex-valued modulation symbol a k,l (p′) from a base station; a processor configured to extract the complex-valued modulation symbol a k,l (p′) from the signal, wherein in response to being configured with code-division multiplex-4 (CDM-4), the complex-valued modulation symbol a k,l (p′) is mapped using a reference signal sequence r l,n s (m according to:
a k,l (p′) =w p′ ( i )· r l,n s ( m ′)

where p′ is a CSI-RS antenna port number per CSI-RS resource and w p′ (i) is a sequence to apply on resource elements, and

k
=

k
′

+

12
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m

-

{

k
″

for
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p
′

∈

{

15
,
16
,
19
,
20

}

,

normal



cyclic


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prefix

,

N
ports
CSI

=
8

k
″

+
6

for


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′

∈

{

17
,
18
,
21
,
22

}

,

normal
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cyclic
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prefix

,

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ports
CSI

=
8

6
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″

for
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′

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15
,
16

Assignees

• Samsung Electronics Co Ltd

Inventors

• Nam Young-Han
• Zhang Jianzhong
• Onggosanusi Eko
• Kim Taeyoung
• Noh Hoondong
• Li Yang

Classifications

• H04L5/0048 Primary

  Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091) · CPC title

• H04L27/2601 Primary

  Multicarrier modulation systems · CPC title

• H04L5/0051 Primary

  of dedicated pilots, i.e. pilots destined for a single user or terminal · CPC title

• H04B7/0617 Primary

  for beam forming · CPC title

• H04L5/0023

  Time-frequency-space · CPC title