0HWKRG RI RSHUDWLRQ6$
9
&*&
'LUHFWLRQDO XQEORFNLQJ PRGH ZLWK IDXOW GHWHFWLRQ
7KH XQEORFNLQJ PRGH LV D UHOHDVH SURFHGXUH 7KH
GLIIHUHQFH IURP GLUHFWLRQDO FRPSDULVRQ SURFHGXUHV
6HFWLRQ LV WKDW D WULSSLQJ VLJQDO LV DOVR SRVVL
EOH ZKHQ QR UHOHDVH VLJQDO LV UHFHLYHG IURP WKH RS
SRVLWH HQG ,W LV WKHUHIRUH SULQFLSDOO\ XVHG IRU ORQJ
OLQHV ZKHQ WKH VLJQDO PXVW EH WUDQVPLWWHG RYHU WKH
SURWHFWHG OLQH E\ D 3/& V\VWHP DQG WKH GDPSLQJ RI
WKH WUDQVPLWWHG VLJQDO DW WKH SRLQW RI IDXOW LV VR ODUJH
WKDW UHFHLSW IURP WKH RWKHU OLQH HQG FDQQRW EH XQFRQ
GLWLRQDOO\ JXDUDQWHHG ,Q WKLV FDVH D VSHFLDO XQ
EORFNLQJ ORJLF FRPHV LQWR RSHUDWLRQ
)LJXUH VKRZV D VLPSOLILHG EORFN VFKHPH RI WKLV
IXQFWLRQ
)RU VLJQDO WUDQVPLVVLRQ RQH UHTXLUHV WZR VLJQDO IUH
TXHQFLHV ZKLFK DUH VKLIWHG RYHU IURP WKH WUDQVPLWWHU
RXWSXW LQ 6$ ,I WKH 3/& V\VWHP LQFRUSRUDWHV
FKDQQHO PRQLWRULQJ HJ 6LHPHQV YRLFH IUHTXHQF\
XQLW 6:7 ) WKHQ WKH PRQLWRULQJ IUHTXHQF\ I
LV
VZLWFKHG WR D ZRUNLQJ IUHTXHQF\ ,I WKH UHOD\ GHWHFWV
D IDXOW LQ WKH OLQH GLUHFWLRQ LW LQLWLDWHV WUDQVPLVVLRQ RI
WKH ZRUNLQJ IUHTXHQF\ I
8
XQEORFNLQJ IUHTXHQF\
FDQ EH GHOD\HG E\ 7
G
8QGHU QRUPDO FRQGLWLRQV RU
ZLWK D IDXOW LQ WKH GLUHFWLRQ RSSRVLWH WR WKDW VHW WKH
PRQLWRULQJ IUHTXHQF\ I
LV WUDQVPLWWHG
!
7
)OWGHW
7ULS 7ULS
)RUZ
GLUHF
)OWGHW
)RUZ
GLUHF
!
= DQG
IXUWKHU
]RQHV
= DQG
IXUWKHU
]RQHV
7
G
7
7
G
7
V
7
V
)DXOW GHWHFWLRQ
)DXOW GHWHFWLRQ ) DXOW GHWHFWLRQ
)DXOW GHWHFWLRQ
=
=
5
8QEORFN
ORJLF
8
)
5
5
8QEORFN
ORJLF
8
)
5
)RUZGLUHF )DXOW LQ SDUDPHWHUL]HG GLUHFWLRQ 7
G
'HOD\ RI WUDQVPLVVLRQ VLJQDO
7 7UDQVPLWWHU 7
V
3URORQJDWLRQ RI WUDQVPLVVLRQ VLJQDO
5 5HFHLYHU 8 ) 8QEORFN UHOHDVH VLJQDO
)LJXUH 'LUHFWLRQDO FRPSDULVRQ XQEORFNLQJ PRGH EORFN VFKHPH