| Presentation | 2005-01-27 Reliability-Based Hybrid ARQ (RB-HARQ) Schemes using Low-Density Parity-Check (LDPC) Codes Yoichi INABA, Tomoaki OHTSUKI, |
|---|---|
| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Reliability-Based hybrid ARQ (RB-HARQ) scheme that can be used with codes using soft-input, soft-output (SISO) decoders such as convolutional codes and turbo codes was proposed. In the RB-HARQ scheme, the error rate performance is improved by selecting the retransmission bits based on LLR of each bit in the receiver. However, the receiver has to send the bit positions of retransmission bits to the transmitter. Therefore, the RB-HARQ schemes require a great number of feedback bits. While Low Density Parity Check (LDPC) codes have gained a lot of interests. LDPC codes can achieve near Shannon limit performance and be decoded easily compared to Turbo codes. In this report, we evaluate a RB-HARQ scheme using LDPC code. Moreover, we propose a RB-HARQ (row base) scheme that utilizes a code configuration of LDPC code and requires a fewer feedback bits. We show that the RB-HARQ scheme has error rate performance better than that of the scheme without ARQ. We also show that the RB-HARQ (row base) sheme has a trade-off between error rate performance and the number of feedback bits for the RB-HARQ scheme. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Reliability-Based hybrid ARQ (RB-HARQ) scheme / Low-Density Parity-Check (LDPC) Codes |
| Paper # | CS2004-174,RCS2004-281 |
| Date of Issue |
| Conference Information | |
| Committee | RCS |
|---|---|
| Conference Date | 2005/1/20(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
| Secretary | |
| Assistant | |
| Paper Information | |
| Registration To | Radio Communication Systems (RCS) |
|---|---|
| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Reliability-Based Hybrid ARQ (RB-HARQ) Schemes using Low-Density Parity-Check (LDPC) Codes |
| Sub Title (in English) | |
| Keyword(1) | Reliability-Based hybrid ARQ (RB-HARQ) scheme |
| Keyword(2) | Low-Density Parity-Check (LDPC) Codes |
| 1st Author's Name | Yoichi INABA |
| 1st Author's Affiliation | Graduate School of Science and Technology, Tokyo University of Science() |
| 2nd Author's Name | Tomoaki OHTSUKI |
| 2nd Author's Affiliation | Faculty of Science and Technology, Tokyo University of Science |
| Date | 2005-01-27 |
| Paper # | CS2004-174,RCS2004-281 |
| Volume (vol) | vol.104 |
| Number (no) | 598 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |