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Optimal power adaptation for OFDM systems with ideal bit-interleaving and hard-decision decoding

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2 Author(s)
Hunziker, T. ; Adv. Telecommun. Res. Inst. Int., Kyoto, Japan ; Dahlhaus, D.

We derive power adaptation strategies optimizing the error rates of broadband bit-interleaved coded OFDM systems performing hard-decisions after the demodulation and ideal interleaving. The adaptive subchannel power allocation is based on either perfect or outdated channel state information in a time-division duplex transmission. We find that for an average bit error rate level of 10-6 a gain of up to 4 dB can be achieved by the proposed adaptation in Rayleigh fading channels.

Published in:

Communications, 2003. ICC '03. IEEE International Conference on  (Volume:5 )

Date of Conference:

11-15 May 2003