TY - GEN
T1 - Integrated implementation of fixed-point turbo decoders for LTE system
AU - Zhang, Kun
AU - Yao, Ruigui
AU - Gao, Fanqi
AU - Wang, Ling
AU - Zhang, Jie
PY - 2013
Y1 - 2013
N2 - In this paper, we discussed the fixed-point implementation of LTE turbo decoder with Max-Log-MAP algorithm. We focused on the non-uniform quantization scheme of received information. In addition, modular arithmetic was introduced to the state metric calculation, as well as the 'Scale' process to extrinsic information calculation. With small hardware implementation complexity, the resource overhead is reduced, and the working speed is improved. Furthermore, simulation results show that, using this proposed fixed-point implementation scheme, the decoding performance is much better than traditional Max-Log-MAP and closed to the Log-MAP algorithm, with a minor degradation less than 0.1 dB.
AB - In this paper, we discussed the fixed-point implementation of LTE turbo decoder with Max-Log-MAP algorithm. We focused on the non-uniform quantization scheme of received information. In addition, modular arithmetic was introduced to the state metric calculation, as well as the 'Scale' process to extrinsic information calculation. With small hardware implementation complexity, the resource overhead is reduced, and the working speed is improved. Furthermore, simulation results show that, using this proposed fixed-point implementation scheme, the decoding performance is much better than traditional Max-Log-MAP and closed to the Log-MAP algorithm, with a minor degradation less than 0.1 dB.
KW - fixed-point
KW - Max-Log-MAP
KW - modular arithmetic
KW - non-uniform quantization
KW - Scaled-Max-Log-MAP
UR - http://www.scopus.com/inward/record.url?scp=84893303806&partnerID=8YFLogxK
U2 - 10.1109/WOCC.2013.6676366
DO - 10.1109/WOCC.2013.6676366
M3 - 会议稿件
AN - SCOPUS:84893303806
SN - 9781467356992
T3 - Proceedings - 2013 Wireless and Optical Communications Conference, WOCC 2013
SP - 187
EP - 192
BT - Proceedings - 2013 Wireless and Optical Communications Conference, WOCC 2013
T2 - 22nd Wireless and Optical Communications Conference, WOCC 2013
Y2 - 16 May 2013 through 18 May 2013
ER -