lteULResourceGridSize

Uplink subframe resource array size

Syntax

d = lteULResourceGridSize(ue)

d = lteULResourceGridSize(ue,p)

Description

d = lteULResourceGridSize(ue) returns the size of the uplink resource array generated from UE-specific settings ue. For more information on the resource grid and the multidimensional array used to represent the resource elements for one subframe across all configured antenna ports, see Represent Resource Grids.

d = lteULResourceGridSize(ue,p) also specifies the number of antenna planes in the array.

Examples

Get Uplink Subframe Resource Array Size

Configure UE-specific settings.

cfgul = struct(NULRB=6,NTxAnts=2,CyclicPrefixUL="Normal");

Get the uplink subframe resource array size.

d = lteResourceGridSize(cfgul);

Generate an uplink resource array of the appropriate size.

gridul = zeros(d);

Get Uplink Subframe Resource Array Size for Specified Antenna Planes

Configure UE-specific settings.

ue = struct(NULRB=25,CyclicPrefixUL="Normal");

Get the uplink subframe resource array size for the specified configuration and four antenna planes.

p = 4;
d = lteResourceGridSize(ue,p);

Create a resource array of the appropriate size.

gridul = zeros(d);

Input Arguments

ue — UE-specific settings

structure

UE-specific settings, specified as a structure containing these fields.

NULRB — Number of uplink RBs

integer in the interval [6, 110]

Number of uplink resource blocks (RBs), specified as an integer in the interval [6, 110].

Data Types: double

CyclicPrefixUL — Cyclic prefix length

"Normal" (default) | "Extended"

Cyclic prefix length, specified as "Normal" or "Extended".

Data Types: char | string

NTxAnts — Number of transmission antennas

1 (default) | 2 | 4

Number of transmission antennas, specified as 1, 2, or 4. If you use the syntax containing the p input, the function ignores this field and uses the p input value instead.

Data Types: double

Data Types: struct

p — Number of antenna planes in uplink resource array

positive integer

Number of antenna planes in the uplink resource array, specified as a positive integer.

Data Types: double

Output Arguments

d — Uplink resource array size

three-element row vector

Uplink resource array size, returned as a three-element row vector of the form [N M P].

• N is the number of subcarriers, which is given by 12 × N_RB, where N_RB is the number of uplink RBs.

• M is the number of SC-FDMA symbols in a subframe: 14 for normal cyclic prefix and 12 for extended cyclic prefix.

• P is the number of transmission antennas.

Data Types: double

Version History

Introduced in R2014a