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In this paper, we derive feedback power control strategies for block-faded multiple access schemes with correlated sources. In particular, upon the derivation of the feasible signal-to-noise ratio (SNR) region for the considered multiple access schemes, i.e., the multidimensional SNR region where error-free communications are, in principle, possible, two feedback power control strategies are proposed:...
Communication over delay-constrained block-fading channels with discrete inputs and imperfect channel state information at the transmitter (CSIT) is studied. The CSIT mismatch is modeled as a Gaussian random variable, whose variance decays as a power of the signal-to-noise ratio (SNR). We focus on the large-SNR behavior of the outage probability when transmit power control is used. We derive the outage...
In this paper, we shall analysis the uplink system goodput (bits/sec/Hz successfully decoded) and per-user packet outage in a cellular network using multi-user detection with successive interference cancellation (MUD-SIC). Slow fading channels and interference cancellation error occurs due to packet outage in each decoding stage are considered. We are interested to study the roles of macro-diversity,...
In today's networks, error correction is achieved by a combination of FEC (forward error correction) and ARQ (automatic repetition request). In classical repetition protocols, a receiver requests a retransmission in case FEC-decoding fails. In this work we revise and summarize our recent results that show the benefits of using the retransmission request bit(s) not only to request a retransmission,...
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