Title :
Real-time MMSE turbo-equalization on the TMS320C5509 fixed-point DSP
Author :
Le Bidan, Raphaël ; Laot, Christophe ; Leroux, Dominique
Author_Institution :
Signal & Commun. Dept., ENST de Bretagne, Brest, France
Abstract :
We describe the implementation of a low-complexity minimum mean-square error (MMSE) turbo-equalizer on the Texas Instruments (TI) TMS320VC5509 device, a low-cost 16-bit fixed-point DSP typically designed for mobile terminals. A data rate of 207 Kb/s per iteration has been achieved. With carefully optimized data quantization, the resulting fixed-point receiver exhibits virtually no performance degradation with respect to an ideal (unquantized) floating-point turbo-equalizer.
Keywords :
data communication; digital signal processing chips; equalisers; interference suppression; intersymbol interference; iterative methods; least mean squares methods; mobile radio; quantisation (signal); radio receivers; 16 bit; 207 Kbit/s; MMSE interference canceller; MMSE turbo-equalization; Texas Instruments TMS320VC5509; data quantization optimization; data transmissions; fixed-point DSP; fixed-point receiver; frequency-selective channels; intersymbol interference; iteration; minimum mean-square error turbo-equalizer; Digital signal processing; Equalizers; Filtering; Finite impulse response filter; Frequency; Instruments; Intersymbol interference; Mobile communication; Quantization; Signal design;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 2004. Proceedings. (ICASSP '04). IEEE International Conference on
Print_ISBN :
0-7803-8484-9
DOI :
10.1109/ICASSP.2004.1327113
