TY - GEN
T1 - Efficient highly-parallel turbo decoder for 3GPP LTE-Advanced
AU - Lin, Jing Shiun
AU - Shieh, Ming-Der
AU - Liu, Chung Yen
AU - Yang, Der Wei
PY - 2015/5/28
Y1 - 2015/5/28
N2 - Turbo codes have been widely adopted in latest wireless communication systems due to their excellent error correction capability. In 3GPP LTE-Advanced systems, a peak data rate of up to 1 Gbps should be satisfied. To meet this throughput requirement, several turbo decoding algorithms aimed at achieving highly parallel architecture have been investigated. However, the resulting hardware cost of turbo decoders is increased considerably with increasing parallelism. This paper presents a modified parallel-window decoding algorithm to reduce the warm-up computation ratio per each decoding window. In addition, a dual-mode computing schedule is proposed to support the requirement of various code rates and block lengths. Experimental results reveal that the proposed design, implemented in the TSMC 90-nm CMOS process, can achieve the highest throughput rate of 1.45 Gbps and improve the normalized area efficiency by about 24.53% compared to the existing 3GPP-LTE-Advanced turbo decoders.
AB - Turbo codes have been widely adopted in latest wireless communication systems due to their excellent error correction capability. In 3GPP LTE-Advanced systems, a peak data rate of up to 1 Gbps should be satisfied. To meet this throughput requirement, several turbo decoding algorithms aimed at achieving highly parallel architecture have been investigated. However, the resulting hardware cost of turbo decoders is increased considerably with increasing parallelism. This paper presents a modified parallel-window decoding algorithm to reduce the warm-up computation ratio per each decoding window. In addition, a dual-mode computing schedule is proposed to support the requirement of various code rates and block lengths. Experimental results reveal that the proposed design, implemented in the TSMC 90-nm CMOS process, can achieve the highest throughput rate of 1.45 Gbps and improve the normalized area efficiency by about 24.53% compared to the existing 3GPP-LTE-Advanced turbo decoders.
UR - https://www.scopus.com/pages/publications/84936984410
UR - https://www.scopus.com/pages/publications/84936984410#tab=citedBy
U2 - 10.1109/VLSI-DAT.2015.7114513
DO - 10.1109/VLSI-DAT.2015.7114513
M3 - Conference contribution
AN - SCOPUS:84936984410
T3 - 2015 International Symposium on VLSI Design, Automation and Test, VLSI-DAT 2015
BT - 2015 International Symposium on VLSI Design, Automation and Test, VLSI-DAT 2015
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2015 International Symposium on VLSI Design, Automation and Test, VLSI-DAT 2015
Y2 - 27 April 2015 through 29 April 2015
ER -