Title :
Combined frequency domain feedforward and turbo decision feedback equalization for single carrier W-LAN systems
Author :
Koppler, A. ; Spronger, A. ; Weigel, R.
Author_Institution :
Inst. for Commun. & Inf. Eng., Johannes Kepler Univ., Linz, Austria
Abstract :
Single carrier transmission with frequency domain equalization (SC/FDE) has been shown to be a promising alternative to orthogonal frequency division multiplexing (OFDM) systems for wireless LANs. In this work we add time domain turbo decision feedback equalization to conventional SC/FDE for block transmission with cyclic prefix. The proposed scheme achieves the potential of ideal decision feedback equalization. Simulation results show a considerable performance increase for highly frequency selective radio channels given in W-LAN environments.
Keywords :
OFDM modulation; decision feedback equalisers; feedforward; indoor radio; interleaved codes; iterative decoding; turbo codes; wireless LAN; OFDM systems; block transmission; combined frequency domain feedforward; cyclic prefix; frequency domain equalization; highly frequency selective radio channels; interleaver; iterative decoding; orthogonal frequency division multiplexing; single carrier W-LAN systems; single carrier transmission; time domain turbo decision feedback equalization; turbo decision feedback equalization; wireless local area networks; Computer errors; Decision feedback equalizers; Frequency domain analysis; Intersymbol interference; Iterative decoding; OFDM; Physical layer; Receivers; Wireless LAN; Wireless communication;
Conference_Titel :
Communications, 2003. ICC '03. IEEE International Conference on
Print_ISBN :
0-7803-7802-4
DOI :
10.1109/ICC.2003.1204015
