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Theory of operation, Reed˚solomon encoder, A.3.1.2 theory of operation – Comtech EF Data C5 User Manual

Page 277: A.3.1.3 reed-solomon encoder

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C5/K1/K3 Integrated Satellite Terminal System

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Rev. 0

A–33

A.3.1.2

Theory of Operation

The Reed-Solomon Codec works in conjunction with the interface card to provide
concatenated convolutional encoding and decoding.

The two main sections of the Codec are:

! Reed-Solomon encoder (Section A.3.1.3)

! Reed-Solomon decoder (Section A.3.1.4)

A.3.1.3 Reed-Solomon

Encoder

A block diagram of the Reed-Solomon encoder section is shown in Figure A-10.

The Reed-Solomon encoder section includes the following circuits:

! Parallel/Serial Converter
! RAM Interleaver

! Reed-Solomon Codec (encoder section)

! Serial/Parallel Converter

! Synchronous Scrambler

U4

U3

U4

U1

U4

JP2

JP2

TXSAT DAT

TXSAT CLK

U4

U4

MUXDATA
(SERIAL)

MUXCLK

SERIAL

TO PARALLEL

CONVERTER

RS CODEC

(ENCODER SECTION)

UNIQUE WORD

INSERTION

RAM

INTERLEAVER

INTERLEAVER

ADDRESS

GENERATOR

RS TIMING CONTROLLER

PARALLEL

TO SERIAL

CONVERTER

SYNCHRONOUS

SCRAMBLER

JP2

JP2

Figure A-10. Reed-Solomon Encoder Section Block Diagram

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