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facilities (such as the channel release signalling facility
on the sub-band C channel) are ineffective.
4.1 0.4.5.4 Recommendation.- The GES management
should broadcast the system time to the AES following an AES
log-on by transmitting the system time broadcast LIDU on all
P channels. The time in the system time broadcast LlDU
should be the predicted time of reception at an AES of the fist
bit of the next superframe of the relevant P channel.
4.10.5 Satellite system
management
At least one satellitelbeam-identifying P,,, channel shall be
active at all times for. each beam that supports a satellite/
beam-identifying P,,,, channel.
Part z Annex 10 - Aeronautical Telecommunicatiuns
TABLES FOR CHAPTER 4
Table 4-1. Received phase noise mask
Offset from carrier Phase noise
(Hz) tdBc)
10 -34
100 -65 I
loo0 -73
3 000 -77
10 000 -79
35 m -79
1. Phase noise is measured single sideband relative to carrier.
2. The mask shall be defined by drawing straight lines through the above points
i on a graph which is logarithmic in frequency.
Note.- This mask is illustrated in the guidance material contained in I
Attachment A to Part I of Annex 10, Volume 111,
able 4-2. P channel acquisition carrier-to-noise levels
Channel rates C/No Nominal channel
(bitsts) (dB-HZ) spacing (kHz)
600 31.9 5
1 200 35.0 5
2 400 38.0 5
4 800 39.5 5
10 500 42.9 10
10 500 43.3 7.5
Anhex 10 - Aeronautical Telecommunications
Table 4-3. Maximum harmonic, discrete spurious and noise density levels
Frequency (MHz) EIRP (density)
below 1 525 -135 dBc14 lcHz
1 525 to 1 559 -203 dBc14 kHz
1 559 to 1 585 -155 dBc/MHz
1585 to 1605 -143 dBc/MHz
1 605 to 1 610 -1 17 dBc/MHz
1 610 to 1 614 -95 ~BcIMHz
1614 to 1660 -55 dBc14 kHz1
1 660 to 1 670 -55 dBcI20 kHz1
1 670 to 1 735 -55 dBcI4 kHz
1 735 to 12 000 -105 dBc14 kHz
12 000 to 18 000 -70 dBcI4 kHz
I, Within the transmit band, excluding the frequency band within +35 kHz of the carrier.
Table 4-4. Transmitted phase noise mask
Offset from carrier Phase noise
(Hz) (Bc)
10 4 0
100 -67
5 00 -72
1100 -80
X -80
1. Phase noise is measured single sideband relative to carrier.
2. The mask shall be defined by drawing straight lines through the above points on a graph which is
logarithmic in frequency.
3. X is equal to 35 kHz or four limes the symbol rate, whichever is less.
4. Where discrete spectral components exist, the sum of the discrete phase noise components and
continuous spectral component averaged over a bandwidth of + I0 Hz on either side of the discretc
component shall not exceed the phase noise mask.
Note.- This mask ir rllustmted in the guidance r~zateriacl ontained in Attachment A tu Part I.
Volume 111
Part l Annex 10 - Aeronautical Telecommunications
Table 4-5. Required spectral limits for AES transmissions
- -
Attenuation (dB)
Fieqlrency offset (relative to maximum envelope level)
*0.75 SR 0
+1.40 SR 20
42.95 SR 40
35 kHz 40
I. The mask shall be defined by drawing straight lines through the above points.
2. The symbol rate, SR, is equal to the channel rate for A-BPSK and is half the channel rate
for A-QPSK.
.Table 4-6. Required spectral limits for A-BPSK received by AES
Upper bound
Amplitude response
Normalized frequency (dB)
-X -40
-0.75 4 0
-0.66 -12
-0.56 -3.5
6 . 4 0.25
0.4 0.25
0.56 -3.5
0.66 -1 2
0.75 4 0
X -40
1. The mask shall be defined by drawing straight lines
Lower bound
Amplitude response
Normalized frequency (dB)
- -
-
- -
- -
4 . 1 -3
0.1 -3
- -
- -
- -
- A
through the above points where frequencies are normalized to
the channel rate, and the amplit~~dise n ormalized to 0 dB at a frequency of 0.
2. X is equal to 35 kHz. For larger frequency offsets the spurious requirements of 4.2.3.5.6 apply.
Note.- This mask is illusrrated in rhe guidance nraterial corrtained in Arruchmenr A to Part I.
Annex 10 - Aeronautical Telecommunications Volume IZI
Table 4-7. Required spectral limits for A-QPSK received by AES
for 100 per cent roll-off
Upper bound
Amplitude response
Normalized frequency (dB)
-X 4 0
-0.625 4 0
-0.5 -20
-0.425 -10
-0.375 -6
-0.275 -3
-0.175 -1
4.075 0.25
0.075 0.25
0.175 -1
0.275 -3
0.375 -6
0.425 -10
0.5 -20
0.625 -40
X 4 0
Lower bound
Amplitude response
Normalized frequency (dB)
　
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