77-30569/400050

-

77 - 30569. 0421100025. ISSN 1994-0406

77-30569/400050
# 04, 2012
. ., . .
. 621.375.1
. .. agal ev2@yandex. ru

() () , , , , . , . [1-3]. , CDMA [1, 5].
, , , , [4]. , . , . . . [4] - .
. , .

, , , - .

:
IV 1 {77. > {* ) ~
;
, |,;:_-.] ...! ],_1 .. ! - ,
;
^=1 = !......*
V ' ' ' 5 = 1.....>

,
,
.
(^ =1.....& ,
=1,.....
.
(1) ( =1, 2) .
( )
= 1,2, ..., - ;
2 () - ;
1 1 - ;
^() - . (2) :
. () - ;
11 "
, .
, = 1 , . , , = 1,2 2 ()
:
> I , , I = 1,2 , (4)

(6)
- .
(4) () . 1.
. 1.
. 1. :
, />) -
;
([.1, /. ^) - , ;
{ < 2\1^)} < 1^2(0} " () 12 (t) , 1, . , (?)

77-30569/400050, 04 2012 . . edu.ru 4
,
1) /1, /1, ' ;
2) , /. " .
{ < 2\1()\ , ^ . (6) (5), :
1 < 2 :


(10) , . , = 0 . (8) (9)
- () ;
- ;
= 1 (11)
= 2 (12) (8)
:
(9) :
) - ^(,
I


(11) (12), :
,)(0 ,
I

= {
2 (0 ()] , 2 .
,
.



X =

11 = (1() = ayd.fi
:

= ; =
(13)


() =

{
.
(14) ,


I

(15)
= / , = - .
< 2 \ ()}
< -\_ -] (7) (1, / ^ :
(17) , (9), (12) (13) , :

2 - ;
= - . (19) (20) (18) :
(17) :
, = 2 .
, :

2 - , (19) (20).
(21) (22) (23) (24) , , , ( / ) ( ). , ( < 3) :

(25) (26) ,
^ 3 5
. 10" -^10" :
2{ ~ 0 ;

{ 0 .
~0,001 %.
(25) (26) , [1].
\ 2 . , \ 2 :
( ) . ( ) . , , ,
, , .
.2,3 , / ( =11 = 2)- , = / = 0 . /. . , ( -> 1) (.2, 3) . , , = 3,1, / = 1 0 0,83 5 10_6 -1 , , (. 2).

. 2.

" = 0,4
2 3 4 5 /
. 3.

, . .

1. / .. , .. , .. . .: - », 2010. 280 .
2. , . . . . 2-,.:. . - .: », 2003. 1104 .
3. Proakis J.G., Digital Communications, 4-th ed. New York: McGraw - Hill, 2000.
4. .. .- .: , 1985.- 384 .
5. .., .. . - .: -, 2001.-256 .
electronic scientific and technical periodical
SCIENCE and EDUCATION
_EL KS 77 - 356'». .V;II421100025, ISSN 1994-jMOg_
Research of influence of smart jamming on error probability of direct-sequence spread-spectrum systems at coherent reception
77-30569/400050
# 04, April 2012
Galev A.V., olapov A.S.
Bauman Moscow State Technical University
agal ev2@yandex. ru
The aim of the study was analysis of error probability of direct-sequence spread-spectrum systems under condition of smart jamming and noise in communication channel. The research was based on broadband systems of coherent reception with opposite and orthogonal signals. In the total the authors obtained expressions for definition of error probability at reception of signals depending on the degree of mutual correlation of smart jamming and a useful signal, parity of their powers and noise level in the channel. The results of the research can be used for analyzing and calculating error probability of direct-sequence spread-spectrum systems with smart jamming and noise.
Publications with keywords: error performance, direct-sequence spread-spectrum system, pseudonoise signals
Publications with words: error performance, direct-sequence spread-spectrum system, pseudonoise signals
References
1. Kalmykov V.V., Fedorov I.B., Iudachev S.S. Sistemy sotovoi i sputnikovoi sviazi [Systems of Cellular and satellite radio communications]. Moscow, Rudomino, 2010. 280 p.
2. Sklar B. Digital Communications: Fundamentals and Applications. Prentice Hall, 2001. 1079 p. (Russ. ed.: Skliar Bernard. Tsifrovaia sviaz'. Teoreticheskie osnovy iprakticheskoe primenenie. Moscow, Izdatel'skii dom Vil'iams», 2003. 1104 p.).
3. Proakis J.G., Digital Communications. 4th ed. New York, McGraw-Hill, 2000.
4. Varakin L.E. Sistemy sviazi s shumopodobnymi signalami [Communication system with noise-like signals]. Moscow, Radio i sviaz', 1985. 384 p.
5. Adrianov V.I., Sokolov A.V. Sredstva mobil'noi sviazi [Means of mobile communication]. St. Petersburg, BKhV-Peterburg, 2001. 256 p.