On Rate Control of Wireless Multicasting(HISC2006)

概要

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This paper studies wireless multicast communication, where a source of common information is transmitted to a group of receivers over fading channels. Communication between the transmitter and each of the receivers is implemented by specifying a minimum signal to noise ratio (SNR) threshold; if the threshold is met, the communication is successful at a corresponding rate, otherwise the communication fails. The determination of SNR threshold that maximizes the effective multicast communication rate is termed rate control. By modeling the channel from the transmitter to each of the receivers as an erasure channel and assuming only channel distribution information at the transmitter, the optimal SNR threshold under a given transmit power is derived. It is shown that, in the low transmit power regime, the optimal ratio between the SNR threshold and the transmit power is determined only by the channel distributions.
社団法人電子情報通信学会の論文
2006-05-18