The implementation of turbo decoder on DSP in W-CDMA system

Author

Song, Yuansheng ; Liu, Gongyuan ; Huiyang

Author_Institution

Sch. of Water Resources & Hydropower, Wuhan Univ., China

Volume

2

fYear

2005

fDate

23-26 Sept. 2005

Firstpage

1281

Lastpage

1283

Abstract

This paper describes the design and implementation of turbo decoder which has been selected for 3G mobile systems on TMS320C6201 DSP developed by Texas Instruments (TI) in 1998. With the incomparable operating speed, which is 200 MHz (5-ns cycle time), TMS320C6201 DSP can achieve the performance of up to 1600 million instructions per second (MIPS) and consequently has gained more and more popularity in many applications. In this paper a turbo decoder is implemented on the TMS320C6201 evaluation module(EVM) board with the code rate 1/3. To every step of the algorithm, we discussed the optimized C code and the minimum cycle time of CPU (best situation of the theory), and get pleasant decoding speed.

Keywords

3G mobile communication; code division multiple access; turbo codes; 3G mobile systems; DSP; W-CDMA system; million instructions per second; turbo decoder; Concatenated codes; Convolutional codes; Decoding; Digital signal processing; Hydroelectric power generation; Instruments; Mobile computing; Multiaccess communication; Turbo codes; Water resources;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications, Networking and Mobile Computing, 2005. Proceedings. 2005 International Conference on

Print_ISBN

0-7803-9335-X

Type

conf

DOI

10.1109/WCNM.2005.1544288

Filename

1544288