Power allocation for goodput optimization in BICM-OFDM systems

Stupia, Ivan;Vandendorpe, Luc;Louveaux, Jérôme;Giannetti, F.;D'Andrea, N.A.;et.al.
(2008) IEEE International Conference on Communications, ICC 2008 — Location: Beijing, China (19.May.2008)

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Abstract
This paper deals with the power allocation problem for coded multicarrier transmission. Specifically, we focus on a bit interleaved coded modulation (BICM) packet transmission implemented with Orthogonal Frequency Division Multiplexing (OFDM) and in the presence of automatic repeat request (ARQ) protocol. Capitalizing on the binary-input output-symmetric (BIOS) nature of the BICM channel it is provided a simple upper-bound of the rate of information bits received without any error, the so called goodput. Based on this theoretical characterization, we develop a power allocation strategy among the different subcarriers so that the system goodput performance metric is maximized. The effectiveness of the proposed method is numerically testified for BICM-OFDM transmission in the context of the typical WLAN scenario. ©2008 IEEE.
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Stupia, I., Vandendorpe, L., Louveaux, J., Giannetti, F., Lottici, V., & D’Andrea, N. A. (2008). Power allocation for goodput optimization in BICM-OFDM systems. Proc. IEEE International Conference on Communications (ICC 2008), p. 3604-3608.