Documentation

ltePUCCH3

Physical uplink control channel format 3

Syntax

  • sym = ltePUCCH3(ue,chs,bits)
    example
  • [sym,info] = ltePUCCH3(ue,chs,bits)
    example

Description

example

sym = ltePUCCH3(ue,chs,bits) returns a matrix containing Physical Uplink Control Channel (PUCCH) format 3 symbols given a structure of UE-specific settings, a structure with channel transmission configuration settings, and a vector of coded hybrid ARQ (HARQ) values, bits.

example

[sym,info] = ltePUCCH3(ue,chs,bits) also returns a PUCCH information structure array, info.

Examples

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Generate PUCCH Format 3 Symbols

Generate PUCCH format 3 modulated symbols.

Initialize ue and chs configuration structures. Generate and view PUCCH Format 3 symbols.

ue.NCellID = 0;
ue.NSubframe = 0;
ue.RNTI = 1;
ue.CyclicPrefixUL = 'Normal';
ue.Shortened = 0;

chs.ResourceIdx = 0;

sym = ltePUCCH3(ue,chs,ones(48,1));
sym(1:5)
ans =

   1.6330 - 1.2247i
  -0.7071 + 0.7071i
  -0.5577 + 0.1494i
   0.4082 - 0.0000i
  -0.5577 - 0.9659i

Generate PUCCH Format 3 Symbols for Two Antennas

Generate the physical uplink control channel (PUCCH) format 3 symbols for two transmit antenna paths and display the information structure.

Initialize parameters for a UE-specific configuration structure and a channel configuration structure. Generate PUCCH1 symbols and information outputs.

ue.NCellID = 1;
ue.RNTI = 1;
ue.NSubframe = 0;
ue.CyclicPrefixUL = 'Normal';
ue.Shortened = 0;

chs.ResourceIdx = [0 3];

[pucch3Sym,info] = ltePUCCH3(ue,chs,[]);

Becasue there are two antennas, the symbols are output as a two-column vector, and the info output structure contains two elements.

pucch3Sym(1:6,:)
size(info)
ans =

   0.0000 + 2.4495i   0.0000 + 2.4495i
   0.0000 - 0.0000i   0.0000 - 0.0000i
   0.0000 + 0.0000i   0.0000 + 0.0000i
   0.0000 + 0.0000i   0.0000 + 0.0000i
   0.0000 - 0.0000i   0.0000 - 0.0000i
   0.0000 + 0.0000i   0.0000 + 0.0000i


ans =

     1     2

View the contents of the second info structure element.

info(2)
ans = 

    NCellCyclicShift: [64 192 46 212 191 71 91 84 25 105]
          OrthSeqIdx: [3 4]
             Symbols: [1x24 double]
             OrthSeq: [5x2 double]
           NSymbSlot: [5 5]

Input Arguments

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ue — UE-specific settingsstructure

UE-specific configuration settings, specified as a structure that can contain these fields.

Parameter FieldRequired or OptionalValuesDescription
NCellIDRequired

Integer from 0 to 503

Physical layer cell identity.

RNTIRequired

Scalar integer

Radio network temporary identifier (RNTI) value (16 bits)

NSubframeRequired

Nonnegative integer

Subframe number.

CyclicPrefixULOptional

'Normal' (default), 'Extended'

Cyclic prefix length

ShortenedOptional

0 (default), 1

Option to shorten the subframe by omitting the last symbol, specified as 0 or 1. If 1, the last symbol of the subframe is not used. For subframes with possible SRS transmission, set Shortened to 1 to maintain a standard compliant configuration.

Data Types: struct

chs — Channel transmission configurationstructure

Channel transmission configuration, specified as a structure containing these fields.

ResourceIdx — PUCCH Resource Indices0 (default) | optional | 0,...,549 | vector | vector of integers

PUCCH Resource Indices, specified as an integer or vector of integers with values from 0 to 549. There is one index for each transmission antenna. These indices determine the cyclic shift and orthogonal cover used for transmission. (nPUCCH(3)).

Data Types: struct

bits — Coded HARQ-ACK bitsnonnegative integer column vector of length 48

Coded HARQ-ACK bits, specified as a nonnegative integer column vector of length 48. TS 36.211 [1], Table 5.4-1 specifies the vector length for PUCCH format 3 is Mbit = 48. bits is expected to be the block of bits b(0)...b(Mbit–1)specified in TS 36.211 [1], Section 5.4.2A. bits is also expected to be generated by performing uplink control information (UCI) channel coding as described TS 36.212 [2], Section 5.2.3.1. For PUCCH format 3, UCI includes encoding of concatenated HARQ-ACK bits and any appended periodic CSI bits plus Scheduling Request (SR) bit when present.

Data Types: double

Output Arguments

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sym — PUCCH format 3 symbolsmatrix

PUCCH format 3 symbols, returned as matrix. The symbols for each antenna are in the columns of sym, with the number of columns determined by the number of PUCCH resource indices specified in chs.ResourceIdx.

Example: [ 0.7071 + 0.7071i,...]

Data Types: double
Complex Number Support: Yes

info — PUCCH format 3 informationstructure

PUCCH format 3 information, returned as a structure array with elements corresponding to each transmit antenna and containing these fields.

NCellCyclicShift — Cell-specific cyclic shift for each OFDM symbolvector

Cell-specific cyclic shift for each OFDM symbol, returned as a vector. (ncscell)

OrthSeqIdx — Orthogonal sequence index for each slotvector

Orthogonal sequence index for each slot, returned as a two-element vector. (noc)

Symbols — Modulated data symbols for each OFDM symbolvector

Modulated data symbols for each OFDM symbol, returned as a vector. (d)

Example: [0.7071 + 0.7071i,...]

OrthSeq — Orthogonal sequence for each slotnumeric matrix

Orthogonal sequence of each slot, returned as a numeric matrix. Each column in the matrix contains the orthogonal sequence (wnoc) for each slot.

    Note:   When ue.Shortened = 1, transmissions are shortened, and the second column of info.OrthSeq has a zero in the last row because the spreading factor for the second slot is 4 instead of 5.

Example: [1.000 + 1.000i,...]

NSymbSlot — Number of OFDM symbols in each slotvector of integers

The number of OFDM symbols in each slot, returned as a vector of integers. ([NSF,0PUCCHNSF,1PUCCH])

Data Types: struct

References

[1] 3GPP TS 36.211. "Physical Channels and Modulation." 3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA). URL: http://www.3gpp.org.

[2] 3GPP TS 36.212. "Multiplexing and channel coding." 3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA). URL: http://www.3gpp.org.

Introduced in R2014a

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