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In orthogonal frequency division-multiple access (OFDMA) systems, the available downlink frequency is divided into subbands which are shared among users. The transmitter determines the users that are scheduled on each subband, and the data rate for each user. To enable these transmitter choices, each user feeds back a channel quality indicator (CQI), giving a compressed version of its observed signal-to-interference-noise...
We consider the multiple antenna multicasting channel, in which a common message is simultaneously transmitted to multiple users in a wireless cellular network, under the assumption that channel state information (CSI) is perfectly available at the transmitter. In this paper, we develop a simple recursive algorithm to determine the co- variance matrix of the transmitted signal vector. For a large...
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