參數(shù)資料
型號: DSP56600
廠商: 飛思卡爾半導體(中國)有限公司
英文描述: Implementing Viterbi Decoders Using the VSL Instruction on DSP Families
中文描述: 維特比解碼器實現(xiàn)上使用DSP的家庭教學的VSL
文件頁數(shù): 14/108頁
文件大?。?/td> 726K
代理商: DSP56600
1-4
Viterbi Decoder Implementation
For More Information On This Product,
Go to: www.freescale.com
Introduction
Manual Organization
1.3
MANUAL ORGANIZATION
Section 2
much of the terminology used in this application note. Those already acquainted with
the algorithm may wish to proceed directly to
of this manual covers many basics of the Viterbi algorithm and introduces
Section 3
.
Section 3
This is done by means of an example, taking a set of encoding polynomials from the
wireless interim standard IS-136 and developing the assembly routines needed to
implement the corresponding decoder using the Viterbi algorithm.
shows how to develop assembly language routines for the Viterbi algorithm.
Section 4
optimizing the example code. The code-to-cover generalized branch metrics is extended,
and an efficient method for normalizing the path metrics is introduced. In addition, two
additional sets of code are given for more efficient processing of data periodically forced
through a known state.
discusses some code modifications that are useful for generalizing and
Section 5
arrived at by comparing the basic Viterbi algorithm code of
modified program code presented in
summarizes the application report and presents interesting data and statistics
Section 2
.
with that of the
Section 3
and
Section 4
Appendix A
contains the complete program listing for
Section 3
.
Appendix B
contains the complete program listing for
Section 4
.
Appendix C
contains the complete 24-bit program listing for
Section 4
.
F
Freescale Semiconductor, Inc.
n
.
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