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ltePDSCHIndices

physical downlink shared channel (PDSCH) resource element indices

Description

[[ind,,,,信息] = ltepdschindices(恩布,,,,CHS,,,,PRBSETreturns a matrix,ind,包含物理下行链路共享通道(PDSCH)资源元素(RE)索引和结构,信息,,,,containing information related to the PDSCH indices. By default, the output indices are a one-based linear indexed 3D array representing the subframe resource element grid for all antenna ports. You can useind直接针对所有天线端口的副帧资源网​​格的索引元素。此功能是通过细胞范围的设置初始化的,恩布,通道传输配置,CHS和物理资源块指数,PRBSET

PRBSET包含与此PDSCH传输的资源分配相对应的物理资源块(PRB)索引。您可以指定PRBSETas either a column vector or a two-column matrix. If you specify a column vector, the resource allocation is the same in both slots of the subframe. If the PRBs in the first and second slots of the subframe differ, you can use the two-column matrix to specify PRBs. The PRB indices are zero-based.

Each column of the returnedn-by-p矩阵,,,,ind,,,,contains the per-antenna indices for thenresource elements in each of thep资源阵列平面。For the'port0',,,,'TxDiversity',,,,'CDD',,,,'SpatialMux',,,,and'多用户'transmission schemes,p=enb.cellrefp。For the other transmission schemes,p=CHS。nTxAnts。Ifchs.ntxants = 0or is absent,indis ann-by-nU矩阵containing the per-layer indices for thenresource elements in each ofnU资源阵列平面。飞机与这些层相关联nU=chs.nlayers

信息结构ure contains parameter fieldsGandGD信息。G提供DL-SCH编码器输出的适当大小,这是参数所需的Outlenprovided to thelteDLSCH功能。信息。Gdis the number of coded and rate-matched DL-SCH data symbols per layer, equal to the number of rows in the PDSCH indices. To provide accurate information in信息, 这Modulation,,,,txscheme,,,,andnlayersfields are required inCHS

笔记

Modulationandnlayers仅在信息output is assigned when you call the function.

例子

[[ind,,,,信息] = ltepdschindices(恩布,,,,CHS,,,,PRBSET,,,,选择使用由选项指定的选项格式化索引选择

Examples

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此示例为4-Antenna情况以线性索引形式生成基于0的PDSCH资源元素(RE)索引。

Create the cell-wide settings structure,恩布

恩布=lteRMCDL('r.14'); enb.NDLRB = 6; enb.CFI = 1; enb.PDSCH.PRBSet = (1:enb.NDLRB-1).';

Generate PDSCH RE indices, specifying the 0-based and linear options.

印第安纳州= ltePDSCHIndices (enb enb.PDSCH,。。。恩布。pDSCH.PRBSet,{'0based',,,,'ind'});Ind(1:10,:)
ans =10x4 uint32 matrix156 1164 2172 3180 157 1165 2173 3181 158 1166 2174 3182 159 1167 2175 3183 160 1168 2176 3184 161 1169 2177 3185 162 1170 2178 3186 163 1171 2179 3187 164 1172 2180 3188 165 1173 2181 3189

这result,ind,是线性索引形式的基于0的映射索引的矩阵。由于这是针对4-Antenna情况的示例,所以ind,,,,has 4 columns.

输入参数

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eNodeB cell-wide settings, specified as a structure containing these parameter fields.

参数字段 必需或可选 Description
nDLRB Required

Scalar integer from 6 to 110

下行链路资源块的数量。(( n RB DL

nCellID Required

整数从0到503

physical layer cell identity

循环序列 可选的

'普通的'(默认),,,,'Extended'

Cyclic prefix length

CellRefP Required

1, 2, 4

细胞特异性参考信号(CRS)天线端口的数量

nsubframe Required

0 (default), nonnegative scalar integer

Subframe number

CFI Required

1, 2, or 3
标量或CFI每个子帧变化,则为长度为10的向量(对应于帧)。

控制格式指示器(CFI)值。在TDD模式下,CFIvaries per subframe for the RMCs ('R.0', 'R.5', 'R.6', 'R.6-27RB', 'R.12-9RB'

双工模板 可选的

'fdd'(默认),,,,'TDD'

Duplexing mode, specified as one of the following:

  • 'fdd'-Frequency division duplex (default)

  • 'TDD'-Time division duplex

这following apply when双工模板is set to'TDD'

tddconfig 可选的

0, 1 (default), 2, 3, 4, 5, 6

Uplink–downlink configuration

SSC 可选的

0(默认),1、2、3、4、5、6、7、8、9

Special subframe configuration (SSC)

这following table shows恩布仅在传输方案时才需要结构字段CHS。txschemeis set to'port7-14'

参数字段 必需或可选 Description
nframe 可选的

0 (default), nonnegative scalar integer

帧号

CSIRSPeriod 可选的

'Off'(默认),,,,'上',,,,ICSI-RS((0,...,154),[[Tcsi-rs Dcsi-rs]。You can also specify values in a cell array of configurations for each resource.

CSI-RS subframe configurations for one or more CSI-RS resources. Multiple CSI-RS resources can be configured from a single common subframe configuration or from a cell array of configurations for each resource.

以下CSI-RS资源参数仅在CSIRSPeriodsets one or more CSI-RS subframe configurations to any value other than'Off'。Each parameter length must be equal to the number of CSI-RS resources required.

CSIRSCONFIG Required

非负标量整数

Array CSI-RS configuration indices. See TS 36.211, Table 6.10.5.2-1.

CSIRefP Required

1 (default), 2, 4, 8

Array of number of CSI-RS antenna ports

Zeropowercsirsperiod 可选的

'Off'(默认),,,,'上',,,,ICSI-RS((0,...,154),[[Tcsi-rs Dcsi-rs]。You can also specify values in a cell array of configurations for each resource.

一个或多个零功率CSI-RS资源配置索引列表的零功率CSI-RS子帧配置。可以从单个公共副帧配置或每个资源列表的单元格配置中配置多个零功率CSI-RS资源列表。

仅当以上一个或多个上述零功率副帧配置设置为除了任何值以外的任何值时,才需要以下零功率CSI-RS资源参数'Off'

Zeropowercsirsconfig Required

16位位图字符向量或字符串标量(如果不是16位或'0'MSB extended), or a numeric list of CSI-RS configuration indices. You can also specify values in a cell array of configurations for each resource.

Zero power CSI-RS resource configuration index lists (TS 36.211 Section 6.10.5.2). Specify each list as a 16-bit bitmap character vector or string scalar (if less than 16 bits, then'0'MSB扩展),或作为TS 36.211表6.10.5.2-1的CSI-RS配置索引的数字列表'4'CSI参考信号列。可以使用单个列表的单元格数组来定义多个列表。

[[1]

Data Types:结构

PDSCH特定的通道传输配置,,,,specified as a structure that can contain the following parameter fields.

参数字段 必需或可选 Description
txscheme 可选的

'port0'(默认),,,,'TxDiversity',,,,'CDD',,,,'SpatialMux',,,,'多用户',,,,'port5',,,,'port7-8',,,,'Port8',,,,'port7-14'

pDSCH transmission scheme, specified as one of the following options.

传输方案 Description
'port0' 单天线端口,端口0
'TxDiversity' 传递多样性
'CDD' Large delay cyclic delay diversity scheme
'SpatialMux' 闭环空间多路复用
'多用户' Multi-user MIMO
'port5' Single-antenna port, port 5
'port7-8' Single-antenna port, port 7, whennLayers= 1。Dual layer transmission, ports 7 and 8, whennLayers= 2
'Port8' Single-antenna port, port 8
'port7-14' Up to eight layer transmission, ports 7–14

这following parameters apply whentxschemeis set to'port5',,,,'port7-8',,,,'Port8',,,,or'port7-14'
nTxAnts 可选的

nonnegative integer, 0 (default)

number of transmission antenna ports. This argument is only present for UE-specific demodulation reference symbols.

提供准确的信息信息,,,,you are required to definetxschemeand the following additional parameters. These fields are only required when信息是输出。
Modulation 可选的

'QPSK'(默认),,,,'16QAM',,,,'64Qam',,,,'256QAM',,,,'1024Qam'

Codeword modulation format, specified as a character vector or string scalar for one codeword, or as cell array or string array for two codewords.

nLayers 可选的

1 (default), 2, 3, 4, 5, 6, 7, 8

number of transmission layers.

层数取决于txscheme

Data Types:结构

physical resource block indices, specified as a column vector or a two-column numeric matrix. This argument contains the Physical Resource Block (PRB) indices corresponding to the resource allocation for this PDSCH transmission. If you specify a column vector, the resource allocation is the same in both slots of the subframe. If the PRBs in the first and second slots of the subframe differ, you can use the two-column matrix to specify PRBs. The PRB indices are zero-based.

Data Types:

资源元素索引的输出格式选项,,,,specified as a character vector, cell array of character vectors, or string array. For convenience, you can specify several options as a single character vector or string scalar by a space-separated list of values placed inside the quotes. Values for选择当指定为字符向量时,包括(使用双引号为字符串):

Category Options Description

索引样式

'ind'(默认)

这returned indices are in linear index style.

'sub'

这returned indices are in(副载波、象征、港口)下标行样式。

Index base

'1 -based'(默认)

这returned indices are one-based.

'0based'

返回的索引基于零。

Example:“基于IND 1 -BASE”,,,,"ind 1based",,,,{'ind','1based'},,,,or[["ind","1based"]指定相同的格式选项。

Data Types:char|string|细胞

Output Arguments

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physical downlink shared channel (PDSCH) resource element (RE) indices, specified as a matrix. Each column of then-by-p矩阵,,,,ind,,,,contains the per-antenna indices for thenresource elements in each of thep资源阵列平面。For the'port0',,,,'TxDiversity',,,,'CDD',,,,'SpatialMux',,,,and'多用户'transmission schemes,p=enb.cellrefp。For the other transmissions schemes,p=CHS。nTxAnts。Ifchs.ntxants = 0or is absent, theind矩阵大小n-by-nU。In this case,indcontains the per-layer indices for thenresource elements in each ofnUresource array planes associated with the layers, wherenU=chs.nlayers。You can return the indices in alternative indexing formats using the argument选择

笔记

这active or zero-power CSI-RS resource elements are excluded from the output indices only for the Release 10/11,'port7-14'传输方案。对于所有其他方案,不避免CSI-RS资源元素索引,从而导致发行8/9兼容PDSCH。任何有源或零功率的CSI-RS都会在子帧结构中覆盖相关的PDSCH RES。

与PDSCH指数有关的信息,作为结构返回。提供准确的信息信息,通道传输配置结构,CHS,,,,must contain the fieldstxscheme,,,,Modulation,,,,andnLayers。这结构ure信息has the following fields.

参数字段 Description Data Type
G

每个代码字的编码和速率匹配的DL-SCH数据位数量。

一两个元素向量

uint32

GD

number of coded and rate-matched DL-SCH data symbols per layer.

整数等于PDSCH指数中的行数

uint32

References

[1] 3GPP TS 36.211。“进化的通用地面无线电通道(E-UTRA);物理渠道和调制。”第三代合伙项目;技术规格组无线电访问网络。URL:https://www.3gpp.org

Introduced in R2014a