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This paper presents a novel joint network and channel decoding-interference canceling (JNCD-IC) algorithm for HARQ in wireless broadcasting system. In this system, the base station uses network coding for retransmission. In the retransmission phase, JNCD-IC scheme is proposed for the receivers to recover multiple error packets from the composite packet which is formed by XORing error packets from...
We propose a cognitive cooperative scheme based on cognitive relays in the downlink of a time division multiple access (TDMA) system. Cognitive relays utilize the spectrum holes detected via the spectrum detection to relay information, which can share the downlink slots through the frequency-division orthogonal transmission. Therefore, no extra system resources (slots or channels) are allocated for...
Some recent studies have focused on the performance of multi-antenna relay systems assuming that perfect channel state information at the transmitter(CSIT) or no CSIT of relay-destination link are available. However, there is still a lack of research on the performance of fixed relay networks with finite feedbacks. In this paper, we present the closed-form expression of outage probability for decode-and-forward...
A novel coding scheme called the distributed generalized low-density (GLD) code is proposed for cooperative relay networks. In this scheme, each relay node decodes and forwards some of the constituent codes of the GLD code to cooperatively form a distributed GLD code using the partial error-detecting and error-correcting capabilities of the GLD code. Distributed GLD codes can easily be adjusted to...
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