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Adaptive resource management for downlink OFDMA system with imperfect CSI

Adaptive resource management for downlink OFDMA system with imperfect CSI

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The effect of the imperfect channel state information (CSI) on the system performance of radio resource management is addressed for a downlink OFDMA system. Differing from the previous works, it is shown that the imperfect CSI introduces a signal-and-power dependent noise term, and then a new method is proposed to evaluate the utility function. Numerical simulations show that the signal-and-power dependent noise yields a non-negligible degradation to the system performance.

References

    1. 1)
      • 1. Tan, S.S., Rim, M.J., Cosman, P.C., Milstein, L.B.: ‘Adaptive modulation for OFDM-based multiple description progressive image transmission’. Proc. IEEE Globecom, New Orleans, LA, USA, December 2008, pp. 15.
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http://iet.metastore.ingenta.com/content/journals/10.1049/el.2014.0025
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