Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)

The Institute of Electronics and Information Engineers (대한전자공학회)
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Performance Degradation due to Phase Jitter in IEEE 802.16 Downlink Signals

  • Kim, Youngsun (Department of Information and Communications, K-JIST) ;
  • Kim, Seung-Geun (Department of Information and Communications, K-JIST) ;
  • Kim, Kiseon (Department of Information and Communications, K-JIST)
  • Published : 2002.07.01
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Abstract

A multilevel modulation with selectable constellations is adopted in the downlink subframe modulation of the IEEE 802.16 standard to increase the total throughput. One of the decision factors of the modulation is the location of SS(Subscriber Station) . Also, for the 802.16, low phase noise of local oscillator is needed due to high operating frequency and severe loss in the propagation channel. We investigate the BER of down-link subframe with the phase jitter under the standard's specified LOS(line of sight) and multipath environment with randomly generated SS locations. Simulation results show BER performance degradation for the modulation corresponding to selected constellations and additionally required SNR to achieve 10$\^$-3/ BER under various phase jitter.

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