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.
|Titolo:||Power Allocation for Goodput Optimization in BICM-OFDM systems|
GIANNETTI, FILIPPO (Co-primo)
LOTTICI, VINCENZO (Co-primo)
D'ANDREA, NUNZIO ALDO (Co-primo)
|Anno del prodotto:||2008|
|Appare nelle tipologie:||4.1 Contributo in Atti di convegno|