The Art of Error Correcting Coding phần 8 pptx
The book of qt 4 the art of building qt applications - phần 3 pptx
... usingthe Designer,which allowsthe basicgraphical
frameworkofmostapplications to be puttogether “bymouseclick” in Qt versions
4. 1and later .The basisofthisisthe QMainWindowQt class.
4. 1The Anatomy of ... key.
Alternatively,while in thenormaldesignmode,you can setthe name of thede-
siredBuddywidgetinthe PropertyEditor, usingthe Buddyproperty.
3
Using this ap-
proach,wewould setthe...
The book of qt 4 the art of building qt applications - phần 5 pptx
... query.Thisisfollowed bythelistofstrings to be displayed.Then
comesthe indexof thelistele ment that thedrop-downwidgetdisplaysatthe be-
ginning .The next-to-lastparameter specifies whether theusercan add ... Extensions andisdescribedinRFCs2 0 45 , 2 046 ,
and2 047 .
1 94
6 .5 Ready-made DialogsinQt
6 .5. 4Input Dialogs
Forsimplequeries,Qtprovides various template inputdialogs,consistingofasu...
The book of qt 4 the art of building qt applications - phần 8 doc
... QStringobjects,
making useofthe toLocal8Bit()method internally.
11.4Startingand ControllingProcesses
Nowandagainyou maywanttomake useofthe services of command-linebased
programs, particularlyon Unix-based operating ... LOGGERTHREAD_H
In theconstructor wespecifythefilename for the le butdonot openit. In run()
weonlystartthe eventloop of thethreadvia exec(). append()opens the le for
each i...
The book of qt 4 the art of building qt applications - phần 10 pptx
... format 1 14
undo se e QTextDocument
QtGlobal 386
QtGui 42 , 44 45
QThread see threads
QThreadStorage 345 – 347
QTime 188
QTimer3 34, 350
singleshot timer3 04
QTimerEvent 188, 189
QtNetwork 42 , 45 , 332
QtOpenGL42, ... 381
QTableView 211
QTableWidget251, 253
QtCore42, 44 , 332
debugvariations28
QTcpServer 333, 338
QTcpSocket40, 318, 333, 3 34, 340
QtDBus43, 47
QtDebug 387
QTempora...
The Art of Error Correcting Coding phần 1 ppsx
... standard array of the binary linear (4, 2, 2) code is the following:
¯s 00 01 10 11
00 0000 011 0 10 11 110 1
11 10 00 11 10 0 011 010 1
10 010 0 0 010 11 11 10 01
01 00 01 011 1 10 10 11 00
Decoding with the standard ... =
11 1
and parity-check matrix
H =
11 0
10 1
.
Accordingly, its standard array is the following:
¯s 01
00 000 11 1
11 10 0 011
10 0...
The Art of Error Correcting Coding phần 2 pps
... the binary representation of integers, then the value of the syndrome directly gives the
position of the error. This is the idea in the algorithms for encoding and decoding presented
below. The ... EG(m, 2) . The columns of the matrix ( ¯x
1
¯x
2
¯x
m
)
are taken as the coordinates
of points of the geometry EG(m ,2) . Then, there is a one-to-one...
The Art of Error Correcting Coding phần 3 doc
... 1. (3. 17)
ã Find the coefcients of the error- locator polynomial (x).
ã Find the inverses of the roots of σ(x), that is, the locations of the errors,
j
1
, ,
j
.
ã Find the values of the errors ... knowledge of the WDS of a code C, the error performance can be estimated, as
discussed in Chapter 1. The WDS and the union bound (1 .36 ) give good estim...
The Art of Error Correcting Coding phần 4 docx
... (4. 23)
where P
s
denotes the probability of a symbol error at the input of the RS decoder,
P
S
= 1 − (1 − p)
m
,
and p denotes the probability of a bit error at the input of the RS decoder. The ... vectors of length 3, code C becomes a binary
(21, 9, 5) code that is capable of correcting up to 2 random errors, as well as any single
burst of up to 4 bits....
The Art of Error Correcting Coding phần 5 docx
... received (one error in the second position). The operation of
the VD is illustrated in Figures 5. 12 to 5. 17. The evolution of the metric values with respect
to the decoding stages is shown in the following ... with Example 5. 5.1, using the traceback technique, at the end
of the i = 6 received pair of bits from the channel, the traceback memory would hav...
The Art of Error Correcting Coding phần 6 pot
... that the syndrome of a binary SPC (n, n − 1, 2) code is simply the sum of the n bits.
The second row and the first column will have nonzero syndromes, indicating the presence of
an odd number of errors. ... Dd) code.
The purpose of the interleaver between the outer and the inner code is twofold. First,
it serves to convert the bytes of size k into vectors of...
The Art of Error Correcting Coding phần 7 ppt
... e
−|δ
1
−δ
2
|
, (7. 30)
SOFT-DECISION DECODING 165
where ¯e(j) is the set of all length-K vectors of Hamming weight one. The vector ¯e(j) is
the coset representative of the partition of code C
1
(equivalent ... =+0.2 − 1. 57 =−1. 37
(u
4
) =
c
4
+
e
1
(u
4
) =+0.3 + 0. 87 =+1. 17
SOFT-DECISION DECODING 159
The operation of a SOVA decoder can be divided into...
The Art of Error Correcting Coding phần 8 pptx
... has the advantage that the number
of bits per symbol is increased by a factor of ν, thus increasing the spectral efficiency of the
system. On the other hand, the required average energy of the ... iterative BF decoding on the basis of the extended
matrix H
ext
. Analyze the performance on the basis of the structure of the Tanner
graph, by considering sin...
The Art of Error Correcting Coding phần 9 potx
... 2000)
P
(NS)
b1
≤
n
w=d
1
w
n
A
(1)
w
2
−w
w
i=0
w
i
Q
2RE
b
N
0
d
2
P
(i)
, (9. 9)
where d
2
P
(i) =
1
w
[
i
1
+ (w − i)
2
]
2
. The probability of a bit error in the second decoding
stage upper is also bound by (9. 9) using the same arguments above.
The bound (9. 9) ... (correlations) from the subsets
selected at the second partitioning stage – given the de...
The Art of Error Correcting Coding phần 10 potx
... 1990.
E. L. Blokh and V. V. Zyablov, Coding of Generalized Concatenated Codes,” Probl. Pered. Inform.,
vol. 10, no. 1, pp. 45–50, 1974.
The Art of Error Correcting Coding, Second Edition Robert H. ... ed., Key Papers
in the Development of Coding Theory, pp. 109 –120, IEEE Press, 1974.
W. W. Peterson and E. J. Weldon, Jr., Error Correcting Codes, 2nd ed., MIT Press, 1...