BICMB-OFDM link resource adaptation

Stupia, Ivan;Giannetti, F.;Lottici, V.;Vandendorpe, Luc;Louveaux, Jérôme
(2009) 2009 IEEE International Conference on Communications, ICC 2009 — Location: Dresden, Germany (14.June.2009)

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An efficient and flexible air interface is the necessary condition for enabling high data rates next generation wireless systems. A practical answer to this need consists in exploiting channel state information at the transmitter for an adaptive and efficient use of the available radio link resources. This paper contributes with a novel strategy for the allocation of the subcarrier transmit power in the case of a wireless system featuring: i) bit-interleaved coded modulation (BICM); ii) orthogonal frequency division multiplexing (OFDM); iii) multiple antenna profile (MIMO). The proposed power-allocation algorithm aims at maximizing the so-called goodput performance metric for packet transmissions employing automatic repeat request (ARQ) schemes. In addition, it is also proven to be near-optimum in maximizing the input/output mutual information of the MIMO-OFDM subchannels. Numerical simulations over typical wireless indoor scenarios confirm the effectiveness of the procedure when applied in the context of MIMO-BICM-OFDM systems. ©2009 IEEE.
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Stupia, I., Giannetti, F., Lottici, V., Vandendorpe, L., & Louveaux, J. (2009). BICMB-OFDM link resource adaptation. Proc. IEEE International Conference on Communications (ICC 2009). Published. 2009 IEEE International Conference on Communications, ICC 2009, Dresden, Germany.