Title :
Asymmetric signal processing for indoor wireless LANs
Author :
Sesay, A.B. ; Gibbard, M.R.
Author_Institution :
TRI Labs., Calgary Univ., Alta., Canada
Abstract :
The authors propose an asymmetric structure with reduced complexity at the portable. It uses a decision feedback equalizer (DFE) at the base station to equalize data from the portable and a Tomlinson-Harashima precoder with its forward filter (TH-FF) at the base station to pre-equalize transmission to the portable. All the filters are characterized using available information at the base station only. Performance results presented include bit error rates, signal powers and spectral densities for data rates between 10 to 100 Mbits/s and sensitivity to automatic gain control errors. Using custom designed ASIC, the complexity at the base station appears feasible for up to a 20 Mbits/s rate
Keywords :
application specific integrated circuits; decision feedback equalisers; digital filters; digital signal processing chips; indoor radio; mobile radio; signal processing; transceivers; wireless LAN; 10 to 100 Mbit/s; DFE; Tomlinson-Harashima precoder; asymmetric signal processing; asymmetric structure; automatic gain control errors; base station; bit error rates; custom designed ASIC; data equalisation; data rates; decision feedback equalizer; forward filter; indoor wireless LAN; performance results; portable; reduced complexity; signal powers; spectral densities; Application specific integrated circuits; Base stations; Bit error rate; Decision feedback equalizers; Error correction; Gain control; Information filtering; Information filters; Signal processing; Wireless LAN;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 1995. PIMRC'95. Wireless: Merging onto the Information Superhighway., Sixth IEEE International Symposium on
Conference_Location :
Toronto, Ont.
Print_ISBN :
0-7803-3002-1
DOI :
10.1109/PIMRC.1995.476269
