The Viterbi algorithm is the same as the binary case with one main difference: The survivor sequences include the uncoded bits, which are decided at each trellis stage when selecting one of two parallel branches with the largest correlation metric.
Presently, only 8-PSK modulation is considered. Extensions to higher-order modulations can be implemented following a similar procedure.
This a set of notes I put together for my Computer Architecture
class in 1990. Students had a project in which they had to model a
microprocessor architecture of their choice. They used these notes to
learn VHDL. The notes cover the VHDL-87 version of the language.
Not all of the language is covered (about 95％).
You may use this booklet for your own personal learning purposes.
You may not use it for profit (eg, selling copies of it, using it in a
course for which people pay, etc). If you want to make use of it
beyond these conditions, contact me and we can come to some
arrangement.
modelsim_se_tutorThis is a set of notes I put together for my Computer Architecture
class in 1990. Students had a project in which they had to model a
microprocessor architecture of their choice. They used these notes to
learn VHDL. The notes cover the VHDL-87 version of the language.
Not all of the language is covered (about 95％).
This is a set of notes I put together for my Computer Architecture
class in 1990. Students had a project in which they had to model a
microprocessor architecture of their choice. They used these notes to
learn VHDL. The notes cover the VHDL-87 version of the language.
Not all of the language is covered (about 95％).
"More for C++" is a class library that provides some features that are usually common for object oriented programming languages like Java or Python, but not for C
A dynamic-link library (DLL) contains one or more subprogram procedures
(functions or subroutines) that are compiled, linked, and stored separately from
the applications using them. Because the functions or subroutines are separate
from the applications using them, they can be shared or replaced easily.
加密算法
Test Driver for Crypto++, a C++ Class Library of Cryptographic Primitives:
- To generate an RSA key
cryptest g
- To encrypt and decrypt a string using RSA
cryptest r
- To calculate MD5, SHS, and RIPEMD-160 message digests:
cryptest m file
- To encrypt and decrypt a string using DES-EDE in CBC mode:
cryptest t
- To encrypt or decrypt a file
cryptest e|d input output
- To share a file into shadows:
cryptest s <pieces> <pieces-needed> file
(make sure file has no extension, if you re running this under DOS)
- To reconstruct a file from shadows:
cryptest j output file1 file2 [....]
- To gzip a file:
cryptest z <compression-level> input output
- To gunzip a file:
cryptest u input output
- To run validation tests:
cryptest v
- To run benchmarks:
cryptest b [time for each benchmark in seconds]
