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In this paper, we investigate the state-dependent degraded broadcast channels with confidential messages (SD-DBC-CM), and with or without noiseless feedback. In this new model, the channel state is available at the transmitter in a noncausal or causal manner, and there may exist a noiseless feedback link from the nondegraded receiver to the transmitter. For the discrete memoryless SD-DBC-CM, inner...
We discuss the transmission over a power line channel that consists of two links. We determine the obtainable rates for time-, and frequency sharing with the “water-filling” argument. Then we show that the two link channel is equivalent to a degraded broadcast channel for which the capacity region is known. Power- and bandwidth constraints determine whether a repeater can improve performance. Another...
In this paper, we investigate the model of degraded broadcast channel with noncausal side information, confidential messages and noiseless feedback. This work is from Steinberg's work on the degraded broadcast channel with noncausal side information, and Csiszár and Körner's work on broadcast channel with confidential messages. In this new model, the transmitter sends a confidential message to the...
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