Title :
Turbo-decoder quantization for UMTS
Author :
Michel, Heiko ; Wehn, Norbert
Author_Institution :
Inst. of Microelectron. Syst., Kaiserslautern Univ., Germany
fDate :
2/1/2001 12:00:00 AM
Abstract :
The use of turbo codes is proposed for high-rate data services in third generation wireless communication systems. Bit-true models are mandatory for hardware and software implementations. In this paper we present to the best of our knowledge the first investigation of a combined bit-width optimization of input data and internal data for an 8-state turbo-decoder based on parameters relevant for UMTS. Simulation results for AWGN and Rayleigh fading channels show that performance degradation can be held below 0.11 dB using a 4-bit input data quantization.
Keywords :
AWGN channels; Rayleigh channels; data communication; decoding; mobile radio; quantisation (signal); turbo codes; 4-bit input data quantization; 8-state turbo-decoder; AWGN channels; Rayleigh fading channels; UMTS; bit-true models; combined bit-width optimization; high-rate data services; performance degradation; simulation results; third generation wireless communication system; turbo-decoder quantization; 3G mobile communication; Computer architecture; Decoding; Energy consumption; Hardware; Proposals; Quantization; Signal processing algorithms; Turbo codes; Wireless communication;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/4234.905934
