Литература / UMTS-Report
.pdf
UMTS 30.06 version 3.0.0 |
391 |
TR 101 146 V3.0.0 (1997-12) |
7.6 C/I simulation results
7.6.1 Speech
7.6.1.1 Speech in ITU Indoor_A
Parameters |
Value(s) |
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Slot size |
1/64 |
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Modulation(s) |
Bin-O-QAM |
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Number of slots used per frame |
1, 2, 4, 6 |
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Uncoded data block |
150 |
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Coding rate |
0.26, 0.13, 0.07, 0.05 |
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Basic code |
CC(1,2,9) |
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Interleaving depth |
Over 4 frames |
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Puncturing |
Yes |
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Frequency hopping |
Slot-by-slot |
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Mobile speed |
3 km/h |
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Antenna diversity |
UL: Yes, DL: No |
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UMTS 30.06 version 3.0.0 |
392 |
TR 101 146 V3.0.0 (1997-12) |
7.6.1.2 Speech in ITU Micro_A
Parameters |
Value(s) |
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Slot size |
1/64 |
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Modulation(s) |
Bin-O-QAM |
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Number of slots used per frame |
1, 2, 4, 6 |
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Uncoded data block |
150 |
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Coding rate |
0.26, 0.13, 0.07, 0.05 |
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Basic code |
CC(1,2,9) |
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Interleaving depth |
Over 4 frames |
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Puncturing |
Yes |
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Frequency hopping |
Slot-by-slot |
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Mobile speed |
3 km/h |
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Antenna diversity |
UL: Yes, DL: No |
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UMTS 30.06 version 3.0.0 |
393 |
TR 101 146 V3.0.0 (1997-12) |
7.6.1.3 Speech in ITU Vehicular_A
Parameters |
Value(s) |
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Slot size |
1/64 |
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Modulation(s) |
Bin-O-QAM |
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Number of slots used per frame |
1, 2, 3, 4, 6 |
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Uncoded data block |
150 |
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Coding rate |
0.26, 0.13, 0.09, 0.07, 0.05 |
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Basic code |
CC(1,2,5), CC(1,2,9) |
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Interleaving depth |
Over 4 frames |
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Puncturing |
Yes |
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Frequency hopping |
Slot-by-slot |
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Mobile speed |
120 km/h |
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Antenna diversity |
UL: Yes, DL: No |
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UMTS 30.06 version 3.0.0 |
394 |
TR 101 146 V3.0.0 (1997-12) |
7.6.1.4 Speech in ITU Vehicular_B
Parameters |
Value(s) |
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Slot size |
1/64 |
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Modulation(s) |
Bin-O-QAM |
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Number of slots used per frame |
1, 2, 4, 6 |
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Uncoded data block |
150 |
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Coding rate |
0.26, 0.13, 0.07, 0.05 |
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Basic code |
CC(1,2,9) |
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Interleaving depth |
Over 4 frames |
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Puncturing |
Yes |
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Frequency hopping |
Slot-by-slot |
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Mobile speed |
250 km/h |
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Antenna diversity |
DL: No, UL: Yes |
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7.6.2 LCD
7.6.2.1 LCD 384 in ITU Indoor_A
Parameters |
Value(s) |
Slot size |
1/16 |
Modulation(s) |
Quat-O-QAM, Bin-O-QAM |
Number of slots used per frame |
3, 4, 6, 8 |
User bitrate |
390 kbit/s |
Coding rate |
0.33, 0.44 |
Basic code |
CC(1,2,5), CC(1,3,5), RS-code |
Interleaving depth |
Over 30 frames |
Puncturing |
Yes |
Frequency hopping |
Slot-by-slot |
UMTS 30.06 version 3.0.0 |
395 |
TR 101 146 V3.0.0 (1997-12) |
Mobile speed |
3 km/h |
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Antenna diversity |
No |
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7.6.2.2 LCD 144 in ITU Micro_A
Parameters |
Value(s) |
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Slot size |
1/16 |
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Modulation(s) |
Quat-O-QAM, Bin-O-QAM |
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Number of slots used per frame |
1, 2, 3, 4 |
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User bitrate |
145.6 kbit/s |
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Coding rate |
0.24, 0.33, 0.49 |
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Basic code |
CC(1,2,5), CC(1,3,5), CC(1,4,5), |
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RS-code |
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Interleaving depth |
Over 30 frames |
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Puncturing |
Yes |
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Frequency hopping |
Slot-by-slot |
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Mobile speed |
3 km/h |
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Antenna diversity |
No |
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7.6.2.3 LCD 384 in ITU Vehicular_A
Parameters |
Value(s) |
Slot size |
1/16 |
Modulation(s) |
Quat-O-QAM, Bin-O-QAM |
UMTS 30.06 version 3.0.0 |
396 |
TR 101 146 V3.0.0 (1997-12) |
Number of slots used per frame |
4, 6, 8, 12 |
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User bitrate |
390 kbit/s |
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Coding rate |
0.22, 0.33, 0.44 |
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Basic code |
CC(1,2,5), CC(1,3,5), CC(1,4,5), |
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RS-code |
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Interleaving depth |
Over 30 frames |
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Puncturing |
Yes |
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Frequency hopping |
Slot-by-slot |
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Mobile speed |
120 km/h |
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Antenna diversity |
No |
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7.6.3 UDD
7.6.3.1 UDD in ITU Indoor_A
Parameters |
Value(s) |
Slot size |
1/16 |
Modulation(s) |
Bin-O-QAM and Quat-O-QAM |
Number of slots used per frame |
1, 2, 4, 6, 8, 16 |
Uncoded data block |
2726 |
Coding rate |
Variable |
Basic code |
CC(1,2,9) |
Interleaving depth |
Over eigth bursts |
Puncturing |
Via hybrid-ARQ |
Frequency hopping |
Slot-by-slot |
Mobile speed |
3 km/h |
Antenna diversity |
UL: Yes, DL: No |
UMTS 30.06 version 3.0.0 |
397 |
TR 101 146 V3.0.0 (1997-12) |
UMTS 30.06 version 3.0.0 |
398 |
TR 101 146 V3.0.0 (1997-12) |
7.6.3.2 UDD in ITU Micro_A
Parameters |
Value(s) |
Slot size |
1/16 |
Modulation(s) |
Bin-O-QAM and Quat-O-QAM |
Number of slots used per frame |
1, 2, 4, 6, 8, 16 |
Uncoded data block |
2726 |
Coding rate |
Variable |
Basic code |
CC(1,2,9) |
Interleaving depth |
Over 8 bursts |
Puncturing |
Via hybrid-ARQ |
Frequency hopping |
Slot-by-slot |
Mobile speed |
3 km/h |
Antenna diversity |
UL: Yes, DL: No |
UMTS 30.06 version 3.0.0 |
399 |
TR 101 146 V3.0.0 (1997-12) |
UMTS 30.06 version 3.0.0 |
400 |
TR 101 146 V3.0.0 (1997-12) |
Effect of frequency hopping can be illustrated by following simulations. In the sense of the throughput frequency hopping decreases the performance about 0.7 dB.
ARQ with (FH) and without (FF) frequency hopping.
However the throughput is not the only measure for packet service quality. It is also beneficial that ARQ-scheme does not produce very high occasional delay. In this sense frequency hopping improves the performance and it also helps to average the interference caused to other users.
Without frequency hopping there occasionally are longer delays for individual packets. However, because the average delays in these two cases are about the same, there are also low delays in the nonhopping case.
In indoor_A channel delays over 10 bursts (~46 ms) were not present if C/I was over 10 dB. With C/I = 0 dB the maximum delay is measured to be 20 bursts (less than 100 ms). Without frequency hopping maximum delays at C/I of 10 dB can exceed 20 bursts and with C/I = 0 dB maximum delays can exceed