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Content for  TR 38.878  Word version:  18.3.0

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1  Scopep. 6

The present technical report documents the Phase I study outcome on the advanced receiver to cancel inter-user interference for MU-MIMO, with the detailed objectives as follows:
  • Evaluate and specify advanced receiver to cancel inter-user interference for MU-MIMO
  • Phase I: Study the performance gain, reference receiver assumption, interference modeling, testability, required signalling overhead, as well as impact on other WGs
    • Further discuss reference receiver assumption with below candidates
      • E-MMSE-IRC
      • R-ML
    • Target scenario: Focus on slot based transmission
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2  Referencesp. 6

The following documents contain provisions which, through reference in this text, constitute provisions of the present document.
  • References are either specific (identified by date of publication, edition number, version number, etc.) or non-specific.
  • For a specific reference, subsequent revisions do not apply.
  • For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same Release as the present document.
[1]
TR 21.905: "Vocabulary for 3GPP Specifications".
[2]
TS 38.211: "NR; Physical channels and modulation".
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3  Definitions, symbols and abbreviationsp. 6

3.1  Termsp. 6

For the purposes of the present document, the terms given in TR 21.905 and the following apply. A term defined in the present document takes precedence over the definition of the same term, if any, in TR 21.905.

3.2  Symbolsp. 6

Void

3.3  Abbreviationsp. 6

For the purposes of the present document, the abbreviations given in TR 21.905 and the following apply. An abbreviation defined in the present document takes precedence over the definition of the same abbreviation, if any, in TR 21.905.
AL
Aggregation level
AP
Antenna port
BWP
Bandwidth part
CBW
Channel bandwidth
CDM
Code division multiple
CORESET
Control resource set
CSI-RS
Channel state information reference signal
DCI
Downlink Control Information
DMRS
Demodulation reference signal
E-MMSE-IRC
Enhanced Minimum mean square error - interference rejection combining
FD-CDM
Frequency division - code division multiple
FDD
Frequency Division Duplex
FDRA
Frequency domain resource allocation
HARQ
Hybrid Automatic Repeat Request
MCS
Modulation and Coding Scheme
MMSE-IRC
Minimum mean square error - interference rejection combining
MU-MIMO
Multi-user-Multiple Input Multiple Output
NZP
Non-zero-power
OFDM
Orthogonal Frequency Division Multiplexing
PDSCH
Physical Downlink Shared Channel
PRG
Precoding resource block group
PSS
Primary synchronization signal
PT-RS
Phase-tracking reference signal
QAM
Quadrature Amplitude Modulation
QCL
Quasi co-location
RB
Resource block
RE
Resource element
R-ML
Reduced complexity Maximum likelihood
RRC
Radio Resource Control
SCS
Subcarrier spacing
SNR
Signal-to-noise ratio
SSB
Synchronization signal block
SSS
Secondary synchronization signal
TBS
Transport block size
TCI
Transmission configuration indicator
TDL
Tapped delay line
TDRA
Time domain resource allocation
TM
Transmission mode
ULA
Uniform Linear Array
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