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response limits for A-QPSK for 60 per cent roll-off
Upper bound
Normalized Amplitude
frequency response (dB)
0 0.25
0.5 0.25
0.64 0
0.93 -1.6
1.14 4.4
1.36 -8
1.5 -1 3
1.64 -22
1.71 -35
3.36 -40
16.67 4 0
Lower bound
Normalized Amplitude
frequency response (dB)
0 -0.25
0.43 4.25
0.64 -1
0.93 -2.6
1.14 -6.4
1.36 -1 1
1.43 -15
1.5 -25
The mask shall be defined by drawing straight lines through the above points where frequencies are normalized to
the channel rate divided by 4, and the amplitude is normalized to 0 dB at a frequency of 0. This mask is illustrated
in the guidance material.
Annex 110 - Aeronautical Telecomrnunic~~ons
-211 1/00 No. 75
THIS PAGE INTENTIONALLY LEFT BLANK
Volume IZI
Appendix 2 to Chapter 4
SIGNAL UNIT FORMATS
Figure A2-1. Signal unit field mapping and bit transmission order
CONTROL INFORMATION1
USER DATA
LSB
ANNEX 10 - VOLUME I11
FIELD
MAPPING
CONVENTION
MSB
BIT NO.
LSB - First transmitted bit
-
CCITTCRC
Not@.- Field mapping of CClFl CRC field is
different from the other fields.
8 1 7 1 6 1 5 1 4 ( 3 1 2 1 1
MSB
..
CONTROL INFORMATION/
USER DATA
LSB
. 21 2' 210 21i 212 21S 214 2IS
20 21 22 2= 24 25 2( 2' -
1- First transmitted octet
2
3
4
0
5 C
T
6 E
T
7
N
U
M
E
10
R
11/18
12/19
Annex 10 - Aeronautical XeZecommunications Volume III
BIT NO.
8 7 6 5 4 3 2 1
1
2
3
4
5
6
7
8 0
C
T
10 E
T
11
12 N
U
13 M
14
E
15 R
16
17
18
19
' DLSIRLS always set to 0
** Class of AES
Figure A2-2. Log-on request - R channel
Part Z Annex 10 - Aeronautical Telecommunications
MESSAGENPE
- -
- AES ID -
GES ID
BIT NO.
8 7 6 5 4 3 2 1
Q NO.
I I I I I I I
MESSAGE TYPE
- -
AES ID
- -
GES ID
Figure A2-4. Log control - P channel
Log-on interrogationAog-on prompt1
Figure A2-3. Log-on confirm - P channel log-off acknowledgernentldata channel reassignment
1
2
0
4 c
T
E
6
7 N
9 B
E
10
11
12
BIT NO.
8 7 6 5 4 3 2 1
TDMA Q NO.
' Reserved
I I I I I I I
SATELLITE ID (previous)
REFERENCE NO.
Figure A2-5. Log control - P channel
Log-on reject
1
2
3 0
C
T
5 E
T
6
7 N
U
8 M : 10 R
11
12
BEAM ID
P/R
- -
- SPARE -
- -
- CClTT CRC -
BIT NO.
8 7 6 5 4 3 2 1
I I I I I I I
MESSAGE TYPE
- -
AES ID
- -
GES ID
RES*
BEAM ID (Isb)
1
2
3 0
C
T
5 E
MESSAGE TYPE
- -
AES ID
- -
GES ID
Figure A2-6. Log control - Q channel
Log-off request
RES*
INIT. ElRP (M CH)
Q NO. REFERENCE NO. 6
T
REASON 7 N
U
E M
-- SPARE
10 R
11
C C l l l CRC
L - 12
BIT NO.
8 7 6 5 4 3 2 1
Q NO.
2l11/00
No. 75
I I I I I I I
REFERENCE NO.
CLASS OF
AES
1
2
3 O
C
T
5 E
T
6
7 N
U
8 M
!
10 R
11
12
- -
- SPARE -
- -
C C l l l CRC
-
VOICE CH. CHARACTERISTICS
REFERENCE NO.
- C C l l l CRC -
Annex 10 - Aeronautical Telecommunications Volume 112
Figure A2-7. Access request data - T channel
Request for reservation (REQ)
BIT NO.
8 7 6 5 4 3 2 1
BIT NO.
AES ID
1
2
0
4 c
T
5 E
6 T
7 N
U
8
B
9 E
10
11
12
I I I I I I I
MESSAGETYPE
- -
- AES ID - 3
GES ID
1w CALLIY,"n~O~~PN~dAL ID &APPLICAETION REF. iNO. l / CALLING TERMINAL ID / 8
(tens digil)
8
RESERVED
SERVICE ID
REF. NO. (of message)
Q NO.
t DlGlT 3
DIGIT 5 DIGIT 4
SOURCE
CCln CRC
SERVICE
DIRECTION
SPARE
Figure A2-9. Call information telephone -
from-aircraft sub-band C channel
Service address (ISU)
Q NO. (of message)
MESSAGE LENGTH
SPARE
- CCllT CRC -
　
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