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Practical application of superposition coding in multiplexing broadcast and unicast for OFDM-based mobile cellular systems is discussed. Superposition coding, whose gain is increased as the superposed signals have larger difference in signal-to interference-plus-noise ratio, is well matched for unicast and broadcast in a single-frequency network configuration. Combined with interference cancellation...
In uplink OFDM/A systems that support link adaptation, e.g., via adaptive modulation and coding (AMC), and/or HARQ schemes, there have been suggestions that fast, closed-loop power control (PC) may not be necessary. It might be sufficient to use open-loop, slow power control method as a countermeasure to the effects of slow fading, i.e., propagation path loss and shadow fading. Here we will compare...
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