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We present new achievable regions for the two-user Gaussian broadcast channel with noiseless feedback from one of the users. Our regions improve on previous achievable regions.
The capacity region of the two-user additive white Gaussian noise (AWGN) multiple-access channel (MAC) with user cooperation is studied. This channel differs from the classical AWGN MAC in that here each transmitter observes a noisy version of the channel inputs sent by the other transmitter. A new achievable region is presented based on a coding scheme where each transmitter sends a linear combination...
A coding scheme for the discrete memoryless broadcast channel with (possible noisy) feedback is proposed, and the corresponding achievable region derived. The scheme is based on a block-Markov strategy where in each block the transmitter sends fresh data and update information that allows the receivers to improve the channel outputs observed in the previous block. The region is analyzed for two specific...
New achievable rate regions are derived for the two-user additive white Gaussian multiple-access channel with noisy feedback. The regions exhibit the following two properties. Irrespective of the (finite) Gaussian feedback-noise variances, the regions include rate points that lie outside the no-feedback capacity region, and when the feedback-noise variances tend to zero the regions converge to the...
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