Encode data using ReedSolomon encoder
The RSEncoder
object creates a ReedSolomon
code with message and codeword lengths you specify.
To encode data using a ReedSolomon encoding scheme:
Define and set up your ReedSolomon encoder object. See Construction.
Call step
to encode data according
to the properties of comm.RSEncoder
. The behavior
of step
is specific to each object in the toolbox.
Note
Starting in R2016b, instead of using the step
method
to perform the operation defined by the System object™, you can
call the object with arguments, as if it were a function. For example, y
= step(obj,x)
and y = obj(x)
perform
equivalent operations.
creates
a block encoder System object, enc
= comm.RSEncoderenc
. This object
performs ReedSolomon (RS) encoding.
creates an RS encoder object, enc
= comm.RSEncoder(N
,K
)enc
, with the CodewordLength
property set to N
and the MessageLength
property set to K
.
creates an RS encoder object, enc
= comm.RSEncoder(N
,K
,GP
)enc
, with the CodewordLength
property set to N
, the MessageLength
property set to K
, and the GeneratorPolynomial
property set
to GP
.
creates an RS encoder object, enc
= comm.RSEncoder(N
,K
,GP
,S
)enc
, with the CodewordLength
property set to N
, the MessageLength
property set to K
, the GeneratorPolynomial
property set
to GP
, and the ShortMessageLength
property set to
S
.
creates an RS encoder object, enc
= comm.RSEncoder(N
,K
,GP
,S
,Name
,Value
)enc
, with the CodewordLength
property set to N
, the MessageLength
property set to K
, the GeneratorPolynomial
property set
to GP
, the ShortMessageLength
property set to
S
, and each specified property Name
set to the specified
Value
.
creates
an RS encoder object, enc
= comm.RSEncoder(Name
,Value
)enc
, with each specified
property name set to the specified value. You can specify additional
namevalue pair arguments in any order as (Name1
,Value1
,...,NameN
,ValueN
).
Note
The input and output signal lengths are listed in Input and Output Signal Lengths in BCH and RS System Objects on
the comm.BCHDecoder
reference page.

Assume that input is bits Specify whether the input comprises bits or integers. The default
is When you set this property to When you set this property to 

Codeword length Specify the codeword length of the RS code as a doubleprecision
positive integer scalar value. The default is For a fulllength RS code, the value of this property must be 2^{M}–1, where M is an integer in the range [3, 16]. 

Message length Specify the message length as a doubleprecision positive integer
scalar value. The default is 

Short message length source Specify the source of the shortened message as


Shortened message length Specify the length of the shortened message as a doubleprecision positive integer scalar
whose value must be less than or equal to When 

Source of generator polynomial Specify the source of the generator polynomial as


Generator polynomial Specify the generator polynomial for the RS code as a doubleprecision integer row vector or
as a Galois row vector. The Galois field row vector entries must be in the range [0,
2^{M}–1] and represent a generator polynomial in
descending order of powers. Each coefficient is an element of the Galois field This property applies when you set 

Enable generator polynomial checking Set this property to This check verifies that X^{CodewordLength} + 1 is divisible by the generator polynomial specified in the This property applies when 

Source of primitive polynomial Specify the source of the primitive polynomial as


Primitive polynomial Specify the primitive polynomial that defines the finite field If This property applies when you set 

Source of puncture pattern Specify the source of the puncture pattern as


Puncture pattern vector Specify the pattern used to puncture the encoded data as a doubleprecision, binary column
vector with a length of ( This property applies when you set the 

Data type of output Specify the output data type as This property applies when you set the 
step  Encode data using a ReedSolomon encoder 
Common to All System Objects  

release  Allow System object property value changes 
This object implements the algorithm, inputs, and outputs described in Algorithms for BCH and RS Errorsonly Decoding.
[1] Clark, George C., and J. Bibb Cain. ErrorCorrection Coding for Digital Communications. Applications of Communications Theory. New York: Plenum Press, 1981.