Title :
The effects of multiple access schemes on equalization for broadband wireless local loop systems
Author :
Hasholzner, Ralph ; Drewes, Christian ; Hammerschmidt, Joachim S.
Author_Institution :
Inst. for Integrated Circuits, Tech. Univ. Munchen, Germany
Abstract :
Single carrier time division multiple access (TDMA) and orthogonal frequency division multiple access (OFDMA) are promising for broadband fixed radio access (FRA) in terms of flexibility, bandwidth-efficiency and implementation cost. Coherent detection of QPSK-symbols requires adaptive equalization. We focus on equalizer adaptation in time-variant frequency-selective FRA-channels in the presence of oscillator phase noise. The implementation complexity of the equalizer is estimated as well
Keywords :
adaptive equalisers; broadband networks; computational complexity; frequency division multiple access; phase noise; quadrature phase shift keying; radio access networks; time division multiple access; time-varying channels; OFDMA; QPSK-symbols; TDMA; adaptive equalization; bandwidth-efficiency; broadband fixed radio access; broadband wireless local loop systems; coherent detection; equalizer adaptation; flexibility; implementation complexity; implementation cost; orthogonal frequency division multiple access; oscillator phase noise; single carrier time division multiple access; time-variant frequency-selective FRA-channels; Adaptive equalizers; Coaxial cables; Costs; Multiaccess communication; Oscillators; Phase noise; Quadrature phase shift keying; Radiofrequency integrated circuits; Time division multiple access; US Department of Transportation;
Conference_Titel :
Vehicular Technology Conference, 1998. VTC 98. 48th IEEE
Conference_Location :
Ottawa, Ont.
Print_ISBN :
0-7803-4320-4
DOI :
10.1109/VETEC.1998.686450
