Altera Reed-Solomon Compiler Instrukcja Użytkownika Pobierz pdf (Strona 5)

December 2014 Altera Corporation Reed-Solomon Compiler

User Guide

1. About This Compiler

This document describes the Altera

Reed-Solomon (RS) Compiler. The Altera RS

Compiler comprises a fully parameterizable encoder and decoder for forward error

correction applications. RS codes are widely used for error detection and correction in

a wide range of DSP applications for storage, retrieval, and transmission of data. The

RS Compiler has the following options:

■ Erasures-supporting option—the RS decoder can correct symbol errors up to the

number of check symbols, if you give the location of the errors to the decoder.

Refer to “Erasures” on page 3–2.

■ Variable encoding or decoding—you can vary the total number of symbols per

codeword and the number of check symbols, in real time, from their minimum

allowable values up to their selected values, when you are encoding or decoding.

■ Error symbol output—the RS decoder finds the error values and location and adds

these values in the Galois field to the input value.

■ Bit error output—either split count or full count

Features

The Altera Reed-Solomon Compiler supports the following features:

■ High-performance encoder/decoder for error detection and correction

■ Fully parameterized RS function, including:

■ Number of bits per symbol

■ Number of symbols per codeword

■ Number of check symbols per codeword

■ Field polynomial

■ First root of generator polynomial

■ Space between roots in generator polynomial

■ Decoder features:

■ Variable option

■ Erasures-supporting option

■ Encoder features variable architectures

■ Support for shortened codewords

■ Conforms to Consultative Committee for Space Data Systems (CCSDS)

Recommendations for Telemetry Channel Coding, May 1999

■ DSP Builder ready

■ IP functional simulation models for use in Altera-supported VHDL and Verilog

HDL simulators

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Altera Reed-Solomon Compiler Instrukcja Użytkownika Strona 5