Abstract
The Reliability-Based Hybrid ARQ (RB-HARQ) scheme, which can be used with error correcting codes using soft-input soft-output (SISO) decoders such as convolutional codes and turbo codes, has been proposed. In the RB-HARQ scheme, the error rate performance is improved by selecting retransmission bits based on Log Likelihood Ratio (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 scheme requires a large number of feedback bits. On the other hand, Low Density Parity Check (LDPC) codes are recently attracting a lot of interest, because LDPC codes can achieve near Shannon limit performance. In this paper, we evaluate the RB-HARQ scheme using LDPC codes. Moreover, we propose a RB-HARQ scheme that requires a fewer feedback bits by utilizing a code structure of LDPC code. We refer to the scheme as the RB-HARQ (row base) scheme. We show that the RB-HARQ and RB-HARQ (row base) schemes using LDPC codes have better error rate performance and higher throughput performance than no ARQ scheme. We also show that the RBHARQ (row base) scheme has a good trade-off between error rate performance and the number of feedback bits compared to the RB-HARQ scheme.
| Original language | English |
|---|---|
| Title of host publication | GLOBECOM - IEEE Global Telecommunications Conference |
| DOIs | |
| Publication status | Published - 2006 |
| Event | IEEE GLOBECOM 2006 - 2006 Global Telecommunications Conference - San Francisco, CA, United States Duration: 2006 Nov 27 → 2006 Dec 1 |
Other
| Other | IEEE GLOBECOM 2006 - 2006 Global Telecommunications Conference |
|---|---|
| Country | United States |
| City | San Francisco, CA |
| Period | 06/11/27 → 06/12/1 |
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ASJC Scopus subject areas
- Engineering(all)
Cite this
Reliability-based hybrid ARQ (RB-HARQ) schemes using low-density parity-check (LDPC) codes. / Inaba, Yoichi; Saito, Tomonori; Ohtsuki, Tomoaki.
GLOBECOM - IEEE Global Telecommunications Conference. 2006. 4151335.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Reliability-based hybrid ARQ (RB-HARQ) schemes using low-density parity-check (LDPC) codes
AU - Inaba, Yoichi
AU - Saito, Tomonori
AU - Ohtsuki, Tomoaki
PY - 2006
Y1 - 2006
N2 - The Reliability-Based Hybrid ARQ (RB-HARQ) scheme, which can be used with error correcting codes using soft-input soft-output (SISO) decoders such as convolutional codes and turbo codes, has been proposed. In the RB-HARQ scheme, the error rate performance is improved by selecting retransmission bits based on Log Likelihood Ratio (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 scheme requires a large number of feedback bits. On the other hand, Low Density Parity Check (LDPC) codes are recently attracting a lot of interest, because LDPC codes can achieve near Shannon limit performance. In this paper, we evaluate the RB-HARQ scheme using LDPC codes. Moreover, we propose a RB-HARQ scheme that requires a fewer feedback bits by utilizing a code structure of LDPC code. We refer to the scheme as the RB-HARQ (row base) scheme. We show that the RB-HARQ and RB-HARQ (row base) schemes using LDPC codes have better error rate performance and higher throughput performance than no ARQ scheme. We also show that the RBHARQ (row base) scheme has a good trade-off between error rate performance and the number of feedback bits compared to the RB-HARQ scheme.
AB - The Reliability-Based Hybrid ARQ (RB-HARQ) scheme, which can be used with error correcting codes using soft-input soft-output (SISO) decoders such as convolutional codes and turbo codes, has been proposed. In the RB-HARQ scheme, the error rate performance is improved by selecting retransmission bits based on Log Likelihood Ratio (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 scheme requires a large number of feedback bits. On the other hand, Low Density Parity Check (LDPC) codes are recently attracting a lot of interest, because LDPC codes can achieve near Shannon limit performance. In this paper, we evaluate the RB-HARQ scheme using LDPC codes. Moreover, we propose a RB-HARQ scheme that requires a fewer feedback bits by utilizing a code structure of LDPC code. We refer to the scheme as the RB-HARQ (row base) scheme. We show that the RB-HARQ and RB-HARQ (row base) schemes using LDPC codes have better error rate performance and higher throughput performance than no ARQ scheme. We also show that the RBHARQ (row base) scheme has a good trade-off between error rate performance and the number of feedback bits compared to the RB-HARQ scheme.
UR - http://www.scopus.com/inward/record.url?scp=50949101231&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=50949101231&partnerID=8YFLogxK
U2 - 10.1109/GLOCOM.2006.705
DO - 10.1109/GLOCOM.2006.705
M3 - Conference contribution
AN - SCOPUS:50949101231
SN - 142440357X
SN - 9781424403578
BT - GLOBECOM - IEEE Global Telecommunications Conference
ER -