A MODIFIED UNEQUAL POWER ALLOCATION (UPA) SCHEME FOR PERFORMANCE ENHANCEMENT IN BIT REPETITION TURBO CODES IN HIGH SPEED DOWNLINK PACKET ACCESS (HSDPA) SYSTEM
In this paper, a modified optimal power allocation scheme for different bits in turbo encoder has been proposed to improve the performance of Turbo Codes system in High Speed Downlink Packet Access (HSDPA) service. In a typical turbo code in HSDPA system, an encoder with code rate of 1/3 was used wi...
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| Format: | Article |
| Language: | English |
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Taylor's University
2015-06-01
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| Series: | Journal of Engineering Science and Technology |
| Subjects: | |
| Online Access: | http://jestec.taylors.edu.my/Vol%2010%20issue%206%20June%202015/Volume%20(10)%20Issue%20(6)%20712-721.pdf |
| _version_ | 1819034864563781632 |
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| author | B. BALAMURALITHARA |
| author_facet | B. BALAMURALITHARA |
| author_sort | B. BALAMURALITHARA |
| collection | DOAJ |
| description | In this paper, a modified optimal power allocation scheme for different bits in turbo encoder has been proposed to improve the performance of Turbo Codes system in High Speed Downlink Packet Access (HSDPA) service. In a typical turbo code in HSDPA system, an encoder with code rate of 1/3 was used with bit repetition scheme or puncturing system to achieve code rate of 1/4. In this study, the author has proposed a modified unequal power allocation (UPA) scheme to improve the performance of Turbo Codes in HSDPA system. The simulation and performance bound results for the proposed UPA scheme for the frame length of N = 400, code rate = 1/4 with Log-MAP decoder over Additive
White Gaussian Noise (AWGN) channel were obtained and compared with the typical Turbo Codes systems, which used bit repetition scheme and puncturing method without UPA. From the results, the proposed bit repetition turbo codes system with modified UPA scheme showed better performance than the typical turbo codes system without UPA using bit repetition and puncturing approaches with coding gain of 0.35 dB to 0.56 dB. |
| first_indexed | 2024-12-21T07:40:30Z |
| format | Article |
| id | doaj.art-803ed01f640c463983559000f7d5089a |
| institution | Directory Open Access Journal |
| issn | 1823-4690 |
| language | English |
| last_indexed | 2024-12-21T07:40:30Z |
| publishDate | 2015-06-01 |
| publisher | Taylor's University |
| record_format | Article |
| series | Journal of Engineering Science and Technology |
| spelling | doaj.art-803ed01f640c463983559000f7d5089a2022-12-21T19:11:19ZengTaylor's UniversityJournal of Engineering Science and Technology1823-46902015-06-01106712721A MODIFIED UNEQUAL POWER ALLOCATION (UPA) SCHEME FOR PERFORMANCE ENHANCEMENT IN BIT REPETITION TURBO CODES IN HIGH SPEED DOWNLINK PACKET ACCESS (HSDPA) SYSTEMB. BALAMURALITHARA0Faculty of Art, Computing and Creative Industry, Universiti Pendidikan Sultan Idris, Tanjung Malim, Perak, Malaysia In this paper, a modified optimal power allocation scheme for different bits in turbo encoder has been proposed to improve the performance of Turbo Codes system in High Speed Downlink Packet Access (HSDPA) service. In a typical turbo code in HSDPA system, an encoder with code rate of 1/3 was used with bit repetition scheme or puncturing system to achieve code rate of 1/4. In this study, the author has proposed a modified unequal power allocation (UPA) scheme to improve the performance of Turbo Codes in HSDPA system. The simulation and performance bound results for the proposed UPA scheme for the frame length of N = 400, code rate = 1/4 with Log-MAP decoder over Additive White Gaussian Noise (AWGN) channel were obtained and compared with the typical Turbo Codes systems, which used bit repetition scheme and puncturing method without UPA. From the results, the proposed bit repetition turbo codes system with modified UPA scheme showed better performance than the typical turbo codes system without UPA using bit repetition and puncturing approaches with coding gain of 0.35 dB to 0.56 dB.http://jestec.taylors.edu.my/Vol%2010%20issue%206%20June%202015/Volume%20(10)%20Issue%20(6)%20712-721.pdfTurbo codes systemUnequal Power Allocation (UPA)HSDPA |
| spellingShingle | B. BALAMURALITHARA A MODIFIED UNEQUAL POWER ALLOCATION (UPA) SCHEME FOR PERFORMANCE ENHANCEMENT IN BIT REPETITION TURBO CODES IN HIGH SPEED DOWNLINK PACKET ACCESS (HSDPA) SYSTEM Journal of Engineering Science and Technology Turbo codes system Unequal Power Allocation (UPA) HSDPA |
| title | A MODIFIED UNEQUAL POWER ALLOCATION (UPA) SCHEME FOR PERFORMANCE ENHANCEMENT IN BIT REPETITION TURBO CODES IN HIGH SPEED DOWNLINK PACKET ACCESS (HSDPA) SYSTEM |
| title_full | A MODIFIED UNEQUAL POWER ALLOCATION (UPA) SCHEME FOR PERFORMANCE ENHANCEMENT IN BIT REPETITION TURBO CODES IN HIGH SPEED DOWNLINK PACKET ACCESS (HSDPA) SYSTEM |
| title_fullStr | A MODIFIED UNEQUAL POWER ALLOCATION (UPA) SCHEME FOR PERFORMANCE ENHANCEMENT IN BIT REPETITION TURBO CODES IN HIGH SPEED DOWNLINK PACKET ACCESS (HSDPA) SYSTEM |
| title_full_unstemmed | A MODIFIED UNEQUAL POWER ALLOCATION (UPA) SCHEME FOR PERFORMANCE ENHANCEMENT IN BIT REPETITION TURBO CODES IN HIGH SPEED DOWNLINK PACKET ACCESS (HSDPA) SYSTEM |
| title_short | A MODIFIED UNEQUAL POWER ALLOCATION (UPA) SCHEME FOR PERFORMANCE ENHANCEMENT IN BIT REPETITION TURBO CODES IN HIGH SPEED DOWNLINK PACKET ACCESS (HSDPA) SYSTEM |
| title_sort | modified unequal power allocation upa scheme for performance enhancement in bit repetition turbo codes in high speed downlink packet access hsdpa system |
| topic | Turbo codes system Unequal Power Allocation (UPA) HSDPA |
| url | http://jestec.taylors.edu.my/Vol%2010%20issue%206%20June%202015/Volume%20(10)%20Issue%20(6)%20712-721.pdf |
| work_keys_str_mv | AT bbalamuralithara amodifiedunequalpowerallocationupaschemeforperformanceenhancementinbitrepetitionturbocodesinhighspeeddownlinkpacketaccesshsdpasystem AT bbalamuralithara modifiedunequalpowerallocationupaschemeforperformanceenhancementinbitrepetitionturbocodesinhighspeeddownlinkpacketaccesshsdpasystem |