Title :
Design of a DSP-based high-speed turbo code decoder for WCDMA applications
Author :
Wu Yi ; Zhou Shidong ; Yao Yan
Author_Institution :
State Key Lab. on Microwave & Digital Commun., Tsinghua Univ., Beijing
Abstract :
We consider the application of turbo code for third-generation mobile communication systems. Based on a suboptimal algorithm named Maxtog-MAP, we deliberately design, simplify and optimize the algorithm according to the features of the DSP. As a result, we get the decoding speed up to 500 kbit/s on a DSP chip. The design is tested by DSP simulation tools. Furthermore, we also study two effective parameters (quantization factor and quantization level) in the DSP-based decoding scheme, and optimized results are given
Keywords :
cellular radio; code division multiple access; decoding; digital signal processing chips; quantisation (signal); turbo codes; DSP chip; Maxtog-MAP; WCDMA applications; decoding; high-speed decoder; quantization factor; quantization level; simulation tools; suboptimal algorithm; third-generation mobile communication systems; turbo code; Algorithm design and analysis; Analytical models; Delay; Laboratories; Mathematical model; Mathematics; Performance analysis; Telecommunication switching; Telephony; Throughput;
Conference_Titel :
Communication Technology Proceedings, 2000. WCC - ICCT 2000. International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7803-6394-9
DOI :
10.1109/ICCT.2000.889209
