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

Volume

2

fYear

1998

fDate

18-21 May 1998

Firstpage

1305

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 1998. VTC 98. 48th IEEE

Conference_Location

Ottawa, Ont.

ISSN

1090-3038

Print_ISBN

0-7803-4320-4

Type

conf

DOI

10.1109/VETEC.1998.686450

Filename

686450