| Presentation | 2001/4/12 Performance of Hybrid ARQ Using Turbo Code in W-CDMA High Speed Downlink Packet Access Nobuhiko Miki, Hiroyuki Atarashi, Sadayuki Abeta, Mamoru Sawahashi, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper elucidates the performance of combining-based hybrid ARQ (HARQ) such as Type-I with packet combining (PC), and Type-II, applying Turbo code and multipath interference canceller (MPIC) in W-CDMA high speed downlink packet access. Simulation results demonstrate that the four modulation and coding scheme (MCS) sets of QPSK with the coding rate of R=1/2, 16QAM with R=1/2 and 3/4, and 64QAM with R=3/4, and three MCS sets of QPSK with R=3/4, 16QAM with R=5/6, and 64QAM with R=5/6 are needed for Type-I with PC and Type-II, respectively. Furthermore, Turbo code can improve the required average received E_c/N_0 and increase the peak throughput by more than approximately 5% (500 kbps) in 64QAM compared with convolutional code, in both combining-based schemes. When the adaptive modulation and coding (AMC) is employed, the throughput performance is almost identical in the region where more than two MCS sets are selected according to the instantaneous SIR measurement results. However, in the high-received E_c/N_0 region where the MCS employing 64QAM is selected in a high possibility, Type-II can increase the maximum throughout approximately 7%(800 kbps) compared with Type-I with PC. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | W-CDMA / High-speed downlink packet access / Hybrid ARQ / Turbo code / Multipath interference canceller |
| Paper # | RCS2001-5,CQ2001-5 |
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| Conference Information | |
| Committee | CQ |
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| Conference Date | 2001/4/12(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Communication Quality (CQ) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Performance of Hybrid ARQ Using Turbo Code in W-CDMA High Speed Downlink Packet Access |
| Sub Title (in English) | |
| Keyword(1) | W-CDMA |
| Keyword(2) | High-speed downlink packet access |
| Keyword(3) | Hybrid ARQ |
| Keyword(4) | Turbo code |
| Keyword(5) | Multipath interference canceller |
| 1st Author's Name | Nobuhiko Miki |
| 1st Author's Affiliation | Wireless Laboratories, NTT DoCoMo, Inc.() |
| 2nd Author's Name | Hiroyuki Atarashi |
| 2nd Author's Affiliation | Wireless Laboratories, NTT DoCoMo, Inc. |
| 3rd Author's Name | Sadayuki Abeta |
| 3rd Author's Affiliation | Wireless Laboratories, NTT DoCoMo, Inc. |
| 4th Author's Name | Mamoru Sawahashi |
| 4th Author's Affiliation | Wireless Laboratories, NTT DoCoMo, Inc. |
| Date | 2001/4/12 |
| Paper # | RCS2001-5,CQ2001-5 |
| Volume (vol) | vol.101 |
| Number (no) | 12 |
| Page | pp.pp.- |
| #Pages | 8 |
| Date of Issue | |