the softest handoff design using iterative decoding (turbo coding) byung k. yi lgic 3gpp2 tsg-c wg 3...
DESCRIPTION
Introduction and Motivation Recent Measurements of an operating IS-95 CDMA Cellular System indicate that About 30% to 50% of an average call period Is in soft-handoff process System Reliability during handoff becomes one of the major system performance parameters Turbo Codes have been adapted for the 3rd Generation Standards: CDMA 2000 (3GPP II) and 3GPP Are there techniques providing soft handoffs without increasing the transmitter power and bandwidth? Can we achieve a type of “Soft” Handoff for TDMA, FDMA, CDMA-to-CDMA System, or between various dual mode operations? 3SH31599.pptTRANSCRIPT
![Page 1: The Softest Handoff Design Using Iterative Decoding (Turbo Coding) Byung K. Yi LGIC 3GPP2 TSG-C WG 3 Physical Layer Jan. 11, 2000](https://reader036.vdocument.in/reader036/viewer/2022062600/5a4d1b987f8b9ab0599c49d7/html5/thumbnails/1.jpg)
The Softest Handoff DesignUsing Iterative Decoding (Turbo Coding)
Byung K. YiLGIC
3GPP2 TSG-C WG 3 Physical LayerJan. 11, 2000
![Page 2: The Softest Handoff Design Using Iterative Decoding (Turbo Coding) Byung K. Yi LGIC 3GPP2 TSG-C WG 3 Physical Layer Jan. 11, 2000](https://reader036.vdocument.in/reader036/viewer/2022062600/5a4d1b987f8b9ab0599c49d7/html5/thumbnails/2.jpg)
Presentation Outline
• Introduction and Motivation• IS-95 Soft Handoff Scheme• The Novel Forward Link System Model for the CCPC Handoff
Scheme• Simulation Results Over AWGN and Rayleigh Channels• Upper Bounding Performances Over AWGN and Rayleigh
Channels• Reverse Link System Model for the CCPA Handoff Scheme• Conclusions
2SH31599.ppt
![Page 3: The Softest Handoff Design Using Iterative Decoding (Turbo Coding) Byung K. Yi LGIC 3GPP2 TSG-C WG 3 Physical Layer Jan. 11, 2000](https://reader036.vdocument.in/reader036/viewer/2022062600/5a4d1b987f8b9ab0599c49d7/html5/thumbnails/3.jpg)
Introduction and Motivation
• Recent Measurements of an operating IS-95 CDMA Cellular System indicate that About 30% to 50% of an average call period Is in soft-handoff process
• System Reliability during handoff becomes one of the major system performance parameters
• Turbo Codes have been adapted for the 3rd Generation Standards: CDMA 2000 (3GPP II) and 3GPP
• Are there techniques providing soft handoffs without increasing the transmitter power and bandwidth?
• Can we achieve a type of “Soft” Handoff for TDMA, FDMA, CDMA-to-CDMA System, or between various dual mode operations?
3SH31599.ppt
![Page 4: The Softest Handoff Design Using Iterative Decoding (Turbo Coding) Byung K. Yi LGIC 3GPP2 TSG-C WG 3 Physical Layer Jan. 11, 2000](https://reader036.vdocument.in/reader036/viewer/2022062600/5a4d1b987f8b9ab0599c49d7/html5/thumbnails/4.jpg)
Introduction and Motivation (Cont’d)
• Are There Any Inherent benefits using the turbo code for next generation multi-media traffics beyond the Coding Gain?
• Answers Are “YES”• Code Combining and Packet Combining (CCPC) Scheme in
Conjunction With Iterative Turbo Decoding
4SH31599.ppt
![Page 5: The Softest Handoff Design Using Iterative Decoding (Turbo Coding) Byung K. Yi LGIC 3GPP2 TSG-C WG 3 Physical Layer Jan. 11, 2000](https://reader036.vdocument.in/reader036/viewer/2022062600/5a4d1b987f8b9ab0599c49d7/html5/thumbnails/5.jpg)
IS-95 Soft Handoff
System Model for the Cellular Handoff
![Page 6: The Softest Handoff Design Using Iterative Decoding (Turbo Coding) Byung K. Yi LGIC 3GPP2 TSG-C WG 3 Physical Layer Jan. 11, 2000](https://reader036.vdocument.in/reader036/viewer/2022062600/5a4d1b987f8b9ab0599c49d7/html5/thumbnails/6.jpg)
IS-95 System Models for the Forward Link
IS-95 CDMA Forward Link Receiver
![Page 7: The Softest Handoff Design Using Iterative Decoding (Turbo Coding) Byung K. Yi LGIC 3GPP2 TSG-C WG 3 Physical Layer Jan. 11, 2000](https://reader036.vdocument.in/reader036/viewer/2022062600/5a4d1b987f8b9ab0599c49d7/html5/thumbnails/7.jpg)
IS-95 Soft Handoff
Maximal Ratio Combiner of the Forward Link
![Page 8: The Softest Handoff Design Using Iterative Decoding (Turbo Coding) Byung K. Yi LGIC 3GPP2 TSG-C WG 3 Physical Layer Jan. 11, 2000](https://reader036.vdocument.in/reader036/viewer/2022062600/5a4d1b987f8b9ab0599c49d7/html5/thumbnails/8.jpg)
IS-95 Soft Handoff
System Model for the Reverse Link
![Page 9: The Softest Handoff Design Using Iterative Decoding (Turbo Coding) Byung K. Yi LGIC 3GPP2 TSG-C WG 3 Physical Layer Jan. 11, 2000](https://reader036.vdocument.in/reader036/viewer/2022062600/5a4d1b987f8b9ab0599c49d7/html5/thumbnails/9.jpg)
The Novel Softest Handoff System Model for Forward Link
Transmitter for the CCPC Handoff
![Page 10: The Softest Handoff Design Using Iterative Decoding (Turbo Coding) Byung K. Yi LGIC 3GPP2 TSG-C WG 3 Physical Layer Jan. 11, 2000](https://reader036.vdocument.in/reader036/viewer/2022062600/5a4d1b987f8b9ab0599c49d7/html5/thumbnails/10.jpg)
The Novel Softest Handoff System Modelfor Forward LinkDetailed Encoder for the CCPC Handoff for Code Rate 1/2
X1
+ D D D+
+
I
+ D D D+
+
Y1
X2
Y2
Puncturer#1
Puncturer#2
MUX
MUX
To Base StationA
To Base StationB
dk
![Page 11: The Softest Handoff Design Using Iterative Decoding (Turbo Coding) Byung K. Yi LGIC 3GPP2 TSG-C WG 3 Physical Layer Jan. 11, 2000](https://reader036.vdocument.in/reader036/viewer/2022062600/5a4d1b987f8b9ab0599c49d7/html5/thumbnails/11.jpg)
The Novel Softest Handoff System Modelfor Forward LinkDetailed Encoder for the CCPC Handoff for Code Rate 1/3
X1
+ D D D+
++
I
+ D D D+
++
Y1
Y2
X2
Y3
Y4
Puncturer#1
Puncturer#2
MUX
MUX
dk
To Base StationA
To Base StationB
![Page 12: The Softest Handoff Design Using Iterative Decoding (Turbo Coding) Byung K. Yi LGIC 3GPP2 TSG-C WG 3 Physical Layer Jan. 11, 2000](https://reader036.vdocument.in/reader036/viewer/2022062600/5a4d1b987f8b9ab0599c49d7/html5/thumbnails/12.jpg)
The Novel Softest Handoff System Model for Forward Link
Detailed Signal Puncturing for the CCPC Handoff
![Page 13: The Softest Handoff Design Using Iterative Decoding (Turbo Coding) Byung K. Yi LGIC 3GPP2 TSG-C WG 3 Physical Layer Jan. 11, 2000](https://reader036.vdocument.in/reader036/viewer/2022062600/5a4d1b987f8b9ab0599c49d7/html5/thumbnails/13.jpg)
The Novel Softest Handoff System Model for Forward Link
Mobile Receiver for the CCPC Handoff
![Page 14: The Softest Handoff Design Using Iterative Decoding (Turbo Coding) Byung K. Yi LGIC 3GPP2 TSG-C WG 3 Physical Layer Jan. 11, 2000](https://reader036.vdocument.in/reader036/viewer/2022062600/5a4d1b987f8b9ab0599c49d7/html5/thumbnails/14.jpg)
The Novel Softest Handoff System Model for Forward Link
Detailed Decoder for the CCPC Handoff Scheme
![Page 15: The Softest Handoff Design Using Iterative Decoding (Turbo Coding) Byung K. Yi LGIC 3GPP2 TSG-C WG 3 Physical Layer Jan. 11, 2000](https://reader036.vdocument.in/reader036/viewer/2022062600/5a4d1b987f8b9ab0599c49d7/html5/thumbnails/15.jpg)
Simulation Results for the Code Rate 1/2
BER over AWGN Channel
-2.5 -2 -1.5 -1 -0.5 0 0.5 1 1.5 210
-6
10-5
10-4
10-3
10-2
10-1
Eb/No
BE
R
BER Comparison for the W/WO diversity Combining over AWGN channel
code rate 1/2 operationcode rate 1/4 CCPC diversity combined
![Page 16: The Softest Handoff Design Using Iterative Decoding (Turbo Coding) Byung K. Yi LGIC 3GPP2 TSG-C WG 3 Physical Layer Jan. 11, 2000](https://reader036.vdocument.in/reader036/viewer/2022062600/5a4d1b987f8b9ab0599c49d7/html5/thumbnails/16.jpg)
Simulation Results for the Code Rate 1/2
FER over AWGN Channel
-2.5 -2 -1.5 -1 -0.5 0 0.5 1 1.5 210
-3
10-2
10-1
100
Eb/No
FER
FER Comparison for the W/WO diversity Combining over AWGN channel
code rate 1/2 operationcode rate 1/4 CCPC diversity combined
![Page 17: The Softest Handoff Design Using Iterative Decoding (Turbo Coding) Byung K. Yi LGIC 3GPP2 TSG-C WG 3 Physical Layer Jan. 11, 2000](https://reader036.vdocument.in/reader036/viewer/2022062600/5a4d1b987f8b9ab0599c49d7/html5/thumbnails/17.jpg)
Simulation Results for the Code Rate 1/2
BER over Rayleigh Fading Channel
![Page 18: The Softest Handoff Design Using Iterative Decoding (Turbo Coding) Byung K. Yi LGIC 3GPP2 TSG-C WG 3 Physical Layer Jan. 11, 2000](https://reader036.vdocument.in/reader036/viewer/2022062600/5a4d1b987f8b9ab0599c49d7/html5/thumbnails/18.jpg)
Simulation Results for the Code Rate 1/2
FER over Rayleigh Fading Channel
-2 -1 0 1 2 3 410
-3
10-2
10-1
100
Eb/No
FER
FER Comparison for the W/WO diversity Combining over Rayleigh Fading channel
code rate 1/2 operationcode rate 1/4 CCPC diversity combined
![Page 19: The Softest Handoff Design Using Iterative Decoding (Turbo Coding) Byung K. Yi LGIC 3GPP2 TSG-C WG 3 Physical Layer Jan. 11, 2000](https://reader036.vdocument.in/reader036/viewer/2022062600/5a4d1b987f8b9ab0599c49d7/html5/thumbnails/19.jpg)
Upper bounding Performance
BER over AWGN
-2 -1 0 1 2 3 4 5 610
-10
10-9
10-8
10-7
10-6
10-5
10-4
10-3
10-2
10-1
100
Eb/No
BE
R
BER Upper Bounding Performance Comparison for the W/WO diversity Combining over AWGN channel
code rate 1/2 operationcode rate 1/4 CCPC diversity combined
Upper bounding Performance for Code Rate 1/2
![Page 20: The Softest Handoff Design Using Iterative Decoding (Turbo Coding) Byung K. Yi LGIC 3GPP2 TSG-C WG 3 Physical Layer Jan. 11, 2000](https://reader036.vdocument.in/reader036/viewer/2022062600/5a4d1b987f8b9ab0599c49d7/html5/thumbnails/20.jpg)
Upper bounding Performance
FER over AWGN
-2 -1 0 1 2 3 4 5 610
-7
10-6
10-5
10-4
10-3
10-2
10-1
100
Eb/No
FER
FER Upper Bounding Performance Comparison for the W/WO diversity Combining over AWGN channel
code rate 1/2 operationcode rate 1/4 CCPC diversity combined
Upper bounding Performance for Code Rate 1/2
![Page 21: The Softest Handoff Design Using Iterative Decoding (Turbo Coding) Byung K. Yi LGIC 3GPP2 TSG-C WG 3 Physical Layer Jan. 11, 2000](https://reader036.vdocument.in/reader036/viewer/2022062600/5a4d1b987f8b9ab0599c49d7/html5/thumbnails/21.jpg)
Comparison between Simulations and Upper Bounding Results
Frame Error rates for AWGN Channel
-3 -2 -1 0 1 2 3 4 5 610
-7
10-6
10-5
10-4
10-3
10-2
10-1
100
Eb/No
FER
FER Comparison between simulation results and upper bounding performances
Simulation result for the code rate 1/2Simulation result for the code rate 1/4Upper bounding performance for the code rate 1/2Upper bounding performance for the code rate 1/4
![Page 22: The Softest Handoff Design Using Iterative Decoding (Turbo Coding) Byung K. Yi LGIC 3GPP2 TSG-C WG 3 Physical Layer Jan. 11, 2000](https://reader036.vdocument.in/reader036/viewer/2022062600/5a4d1b987f8b9ab0599c49d7/html5/thumbnails/22.jpg)
Comparison between Simulations and Upper Bounding Results
Bit Error rates for AWGN Channel
-3 -2 -1 0 1 2 3 4 5 610
-10
10-9
10-8
10-7
10-6
10-5
10-4
10-3
10-2
10-1
100
Eb/No
BE
R
BER Comparison between simulation results and upper bounding performances
Simulation result for the code rate 1/2Simulation result for the code rate 1/4Upper bounding performance for the code rate 1/2Upper bounding performance for the code rate 1/4
![Page 23: The Softest Handoff Design Using Iterative Decoding (Turbo Coding) Byung K. Yi LGIC 3GPP2 TSG-C WG 3 Physical Layer Jan. 11, 2000](https://reader036.vdocument.in/reader036/viewer/2022062600/5a4d1b987f8b9ab0599c49d7/html5/thumbnails/23.jpg)
Upper bounding Performance
FER over AWGN Channel for Different TX Power Cases
-2 -1 0 1 2 3 4 5 610
-8
10-7
10-6
10-5
10-4
10-3
10-2
10-1
100
Eb/No
FER
FER Upper Bounding Performance Comparison for the different TX Power Cases over AWGN channel
CCPC diversity combined with PA=PBCCPC diversity combined with PB=PA-3dBCCPC diversity combined with PB=PA-6dBCCPC diversity combined with PB=PA-9dBW/O CCPC with Code Rate 1/2
Upper bounding Performance for Code Rate 1/2
![Page 24: The Softest Handoff Design Using Iterative Decoding (Turbo Coding) Byung K. Yi LGIC 3GPP2 TSG-C WG 3 Physical Layer Jan. 11, 2000](https://reader036.vdocument.in/reader036/viewer/2022062600/5a4d1b987f8b9ab0599c49d7/html5/thumbnails/24.jpg)
Upper bounding Performance
BER over AWGN Channel for Different TX Power Cases
Upper bounding Performance for Code Rate 1/2
![Page 25: The Softest Handoff Design Using Iterative Decoding (Turbo Coding) Byung K. Yi LGIC 3GPP2 TSG-C WG 3 Physical Layer Jan. 11, 2000](https://reader036.vdocument.in/reader036/viewer/2022062600/5a4d1b987f8b9ab0599c49d7/html5/thumbnails/25.jpg)
Upper bounding Performance
FER over Rayleigh Fading Channel for the Same TX Power Case
-1 0 1 2 3 4 5 6 710
-8
10-7
10-6
10-5
10-4
10-3
10-2
10-1
100
Eb/No
FER
FER Upper Bounding Performance Comparison for the W/WO diversity Combining over Rayleigh Fading channel
code rate 1/2 operationcode rate 1/4 CCPC diversity combined
Upper bounding Performance for Code Rate 1/2
![Page 26: The Softest Handoff Design Using Iterative Decoding (Turbo Coding) Byung K. Yi LGIC 3GPP2 TSG-C WG 3 Physical Layer Jan. 11, 2000](https://reader036.vdocument.in/reader036/viewer/2022062600/5a4d1b987f8b9ab0599c49d7/html5/thumbnails/26.jpg)
Upper bounding Performance
BER over Rayleigh Fading Channel for the Same TX Power Case
-1 0 1 2 3 4 5 6 710
-12
10-10
10-8
10-6
10-4
10-2
100
Eb/No
BE
R
BER Upper Bounding Performance Comparison for the W/WO diversity Combining over Rayleigh Fading channel
code rate 1/2 operationcode rate 1/4 CCPC diversity combined
Upper bounding Performance for Code Rate 1/2
![Page 27: The Softest Handoff Design Using Iterative Decoding (Turbo Coding) Byung K. Yi LGIC 3GPP2 TSG-C WG 3 Physical Layer Jan. 11, 2000](https://reader036.vdocument.in/reader036/viewer/2022062600/5a4d1b987f8b9ab0599c49d7/html5/thumbnails/27.jpg)
Comparison between Simulations and Upper Bounding Results
Frame Error rates for Rayleigh Fading Channel
-2 -1 0 1 2 3 4 5 6 710
-8
10-7
10-6
10-5
10-4
10-3
10-2
10-1
100
Eb/No
FER
FER Comparison between simulation results and upper bounding performances over Rayleigh Fading Channel
Simulation result for the code rate 1/2Simulation result for the code rate 1/4Upper bounding performance for the code rate 1/2Upper bounding performance for the code rate 1/4
![Page 28: The Softest Handoff Design Using Iterative Decoding (Turbo Coding) Byung K. Yi LGIC 3GPP2 TSG-C WG 3 Physical Layer Jan. 11, 2000](https://reader036.vdocument.in/reader036/viewer/2022062600/5a4d1b987f8b9ab0599c49d7/html5/thumbnails/28.jpg)
Comparison between Simulations and Upper Bounding Results
Bit Error rates for Rayleigh Fading Channel
-2 -1 0 1 2 3 4 5 6 710
-12
10-10
10-8
10-6
10-4
10-2
100
Eb/No
BE
R
BER Comparison between simulation results and upper bounding performances over Rayleigh Fading Channel
Simulation result for the code rate 1/2Simulation result for the code rate 1/4Upper bounding performance for the code rate 1/2Upper bounding performance for the code rate 1/4
![Page 29: The Softest Handoff Design Using Iterative Decoding (Turbo Coding) Byung K. Yi LGIC 3GPP2 TSG-C WG 3 Physical Layer Jan. 11, 2000](https://reader036.vdocument.in/reader036/viewer/2022062600/5a4d1b987f8b9ab0599c49d7/html5/thumbnails/29.jpg)
FER over Rayleigh Fading Channel for Different TX Power Cases
-1 0 1 2 3 4 5 6 7 810
-8
10-7
10-6
10-5
10-4
10-3
10-2
10-1
100
Eb/No
FER
FER Upper Bounding Performance Comparison for the different TX Power Cases over Rayleigh Fading channel
CCPC diversity combined with PA=PBCCPC diversity combined with PB=PA-3dBCCPC diversity combined with PB=PA-6dBCCPC diversity combined with PB=PA-9dBW/O CCPC with Code Rate 1/2
Upper bounding Performance for Code Rate 1/2
![Page 30: The Softest Handoff Design Using Iterative Decoding (Turbo Coding) Byung K. Yi LGIC 3GPP2 TSG-C WG 3 Physical Layer Jan. 11, 2000](https://reader036.vdocument.in/reader036/viewer/2022062600/5a4d1b987f8b9ab0599c49d7/html5/thumbnails/30.jpg)
Upper bounding Performance for Code Rate 1/2
BER over Rayleigh Fading Channel for Different TX Power Cases
-1 0 1 2 3 4 5 6 7 810
-12
10-10
10-8
10-6
10-4
10-2
100
Eb/No
BE
R
BER Upper Bounding Performance Comparison for the different TX Power Cases over Rayleigh Fading channel
CCPC diversity combined with PA=PBCCPC diversity combined with PB=PA-3dBCCPC diversity combined with PB=PA-6dBCCPC diversity combined with PB=PA-9dBW/O CCPC with Code Rate 1/2
![Page 31: The Softest Handoff Design Using Iterative Decoding (Turbo Coding) Byung K. Yi LGIC 3GPP2 TSG-C WG 3 Physical Layer Jan. 11, 2000](https://reader036.vdocument.in/reader036/viewer/2022062600/5a4d1b987f8b9ab0599c49d7/html5/thumbnails/31.jpg)
Upper bounding Performance for Code Rate 1/2
FER Performance Comparison between 2-UNINTER and UNINT+INTOver AWGN Channel
-1.5 -1 -0.5 0 0.5 1 1.5 2 2.5 310
-7
10-6
10-5
10-4
10-3
10-2
10-1
100
Eb/No
FER
FER Upper Bounding Performance Comparison between the interleaved and the uninterleaved over AWGN
code rate 1/4 CCPC with INT and UNINT sys bit streamscode rate 1/4 CCPC with two UNINTs
![Page 32: The Softest Handoff Design Using Iterative Decoding (Turbo Coding) Byung K. Yi LGIC 3GPP2 TSG-C WG 3 Physical Layer Jan. 11, 2000](https://reader036.vdocument.in/reader036/viewer/2022062600/5a4d1b987f8b9ab0599c49d7/html5/thumbnails/32.jpg)
Upper bounding Performance for Code Rate 1/2
BER Performance Comparison between 2-UNINTER and UNINT+INTOver AWGN Channel
-1.5 -1 -0.5 0 0.5 1 1.5 2 2.5 310
-10
10-9
10-8
10-7
10-6
10-5
10-4
10-3
10-2
10-1
100
Eb/No
BE
R
BER Upper Bounding Performance Comparison between the interleaved and the uninterleaved over AWGN
code rate 1/4 CCPC with INT and UNINT sys bit streamscode rate 1/4 CCPC with two UNINTs
![Page 33: The Softest Handoff Design Using Iterative Decoding (Turbo Coding) Byung K. Yi LGIC 3GPP2 TSG-C WG 3 Physical Layer Jan. 11, 2000](https://reader036.vdocument.in/reader036/viewer/2022062600/5a4d1b987f8b9ab0599c49d7/html5/thumbnails/33.jpg)
Upper bounding Performance for Code Rate 1/2
BER Performance Comparison between 2-UNINTER and UNINT+INT Over Layleigh Fading Channel
-1 0 1 2 3 4 5 610
-12
10-10
10-8
10-6
10-4
10-2
100
Eb/No
BE
R
BER Upper Bounding Performance Comparison between the interleaved and the uninterleaved over Rayleigh
code rate 1/4 CCPC with INT and UNINT sys bit streamscode rate 1/4 CCPC with two UNINTs
![Page 34: The Softest Handoff Design Using Iterative Decoding (Turbo Coding) Byung K. Yi LGIC 3GPP2 TSG-C WG 3 Physical Layer Jan. 11, 2000](https://reader036.vdocument.in/reader036/viewer/2022062600/5a4d1b987f8b9ab0599c49d7/html5/thumbnails/34.jpg)
Upper bounding Performance for Code Rate 1/3
FER over AWGN
-2 -1 0 1 2 3 4 5 610
-8
10-7
10-6
10-5
10-4
10-3
10-2
10-1
100
Eb/No
FER
FER Comparison for the W/WO CCPC over AWGN channel
code rate 1/3 operationcode rate 1/6 CCPC diversity combined
![Page 35: The Softest Handoff Design Using Iterative Decoding (Turbo Coding) Byung K. Yi LGIC 3GPP2 TSG-C WG 3 Physical Layer Jan. 11, 2000](https://reader036.vdocument.in/reader036/viewer/2022062600/5a4d1b987f8b9ab0599c49d7/html5/thumbnails/35.jpg)
Upper bounding Performance for Code Rate 1/3
BER over AWGN
-2 -1 0 1 2 3 4 5 610
-12
10-10
10-8
10-6
10-4
10-2
100
Eb/No
BE
R
BER Comparison for the W/WO CCPC over AWGN channel
code rate 1/3 operationcode rate 1/6 CCPC diversity combined
![Page 36: The Softest Handoff Design Using Iterative Decoding (Turbo Coding) Byung K. Yi LGIC 3GPP2 TSG-C WG 3 Physical Layer Jan. 11, 2000](https://reader036.vdocument.in/reader036/viewer/2022062600/5a4d1b987f8b9ab0599c49d7/html5/thumbnails/36.jpg)
Upper bounding Performance for Code Rate 1/3
BER over AWGN Channel for Different TX Power Cases
-2 -1 0 1 2 3 4 5 610
-8
10-7
10-6
10-5
10-4
10-3
10-2
10-1
100
Eb/No
FER
FER Upper Bounding Performance Comparison for the different TX Power Cases over AWGN channel
CCPC diversity combined with PA=PBCCPC diversity combined with PB=PA-3dBCCPC diversity combined with PB=PA-6dBCCPC diversity combined with PB=PA-9dBW/O CCPC with Code Rate 1/3
![Page 37: The Softest Handoff Design Using Iterative Decoding (Turbo Coding) Byung K. Yi LGIC 3GPP2 TSG-C WG 3 Physical Layer Jan. 11, 2000](https://reader036.vdocument.in/reader036/viewer/2022062600/5a4d1b987f8b9ab0599c49d7/html5/thumbnails/37.jpg)
Upper bounding Performance for Code Rate 1/3
FER over AWGN Channel for Different TX Power Cases
-2 -1 0 1 2 3 4 5 610
-8
10-7
10-6
10-5
10-4
10-3
10-2
10-1
100
Eb/No
FER
FER Upper Bounding Performance Comparison for the different TX Power Cases over AWGN channel
CCPC diversity combined with PA=PBCCPC diversity combined with PB=PA-3dBCCPC diversity combined with PB=PA-6dBCCPC diversity combined with PB=PA-9dBW/O CCPC with Code Rate 1/3
![Page 38: The Softest Handoff Design Using Iterative Decoding (Turbo Coding) Byung K. Yi LGIC 3GPP2 TSG-C WG 3 Physical Layer Jan. 11, 2000](https://reader036.vdocument.in/reader036/viewer/2022062600/5a4d1b987f8b9ab0599c49d7/html5/thumbnails/38.jpg)
Upper bounding Performance for Code Rate 1/3
BER over AWGN Channel for Different TX Power Cases
-2 -1 0 1 2 3 4 5 610
-12
10-10
10-8
10-6
10-4
10-2
100
Eb/No
BE
R
BER Upper Bounding Performance Comparison for the different TX Power Cases over AWGN channel
CCPC diversity combined with PA=PBCCPC diversity combined with PB=PA-3dBCCPC diversity combined with PB=PA-6dBCCPC diversity combined with PB=PA-9dBW/O CCPC with Code Rate 1/3
![Page 39: The Softest Handoff Design Using Iterative Decoding (Turbo Coding) Byung K. Yi LGIC 3GPP2 TSG-C WG 3 Physical Layer Jan. 11, 2000](https://reader036.vdocument.in/reader036/viewer/2022062600/5a4d1b987f8b9ab0599c49d7/html5/thumbnails/39.jpg)
Upper bounding Performance for Code Rate 1/3
FER over Rayleigh Channel for Different TX Power Cases
-2 -1 0 1 2 3 4 5 610
-12
10-10
10-8
10-6
10-4
10-2
100
Eb/No
BE
R
BER Upper Bounding Performance Comparison for the different TX Power Cases over AWGN channel
CCPC diversity combined with PA=PBCCPC diversity combined with PB=PA-3dBCCPC diversity combined with PB=PA-6dBCCPC diversity combined with PB=PA-9dBW/O CCPC with Code Rate 1/3
![Page 40: The Softest Handoff Design Using Iterative Decoding (Turbo Coding) Byung K. Yi LGIC 3GPP2 TSG-C WG 3 Physical Layer Jan. 11, 2000](https://reader036.vdocument.in/reader036/viewer/2022062600/5a4d1b987f8b9ab0599c49d7/html5/thumbnails/40.jpg)
Upper bounding Performance for Code Rate 1/3
BER over Rayleigh Channel for Different TX Power Cases
-2 -1 0 1 2 3 4 5 610
-12
10-10
10-8
10-6
10-4
10-2
100
Eb/No
BE
R
BER Upper Bounding Performance Comparison for the different TX Power Cases over AWGN channel
CCPC diversity combined with PA=PBCCPC diversity combined with PB=PA-3dBCCPC diversity combined with PB=PA-6dBCCPC diversity combined with PB=PA-9dBW/O CCPC with Code Rate 1/3
![Page 41: The Softest Handoff Design Using Iterative Decoding (Turbo Coding) Byung K. Yi LGIC 3GPP2 TSG-C WG 3 Physical Layer Jan. 11, 2000](https://reader036.vdocument.in/reader036/viewer/2022062600/5a4d1b987f8b9ab0599c49d7/html5/thumbnails/41.jpg)
Conclusions
• We Proposed a New Soft Handoff Scheme Combining With CCPC Scheme With Iterative Turbo Decoding
• We Demonstrated Not Only an Unprecedented Coding Gain From Iterative Turbo Code, but Also More Than 3.2 dB and 4.0 dB Diversity Gains Due to the CCPC Scheme
• The CCPC Handoff Provides “the Softest” Handoff Mechanism for CDMA Systems
• The CCPC Handoff Can Allow a Type of Soft Handoff for TDMA, FDMA, CDMA-to- CDMA, or Between Dual Mode Operations
• The CCPC Handoff Scheme Provides Seamless and Transparent Handoff to Users
41SH31599.ppt