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The proliferation of wireless communications has lead to a high interest to establish this technology in industrial settings. The main arguments in favor of wireless are reduced costs in deployment and maintenance, as well as increased flexibility. In contrast to home and office environments, industrial settings include mission-critical machine-to-machine applications, demanding stringent requirements...
Wireless multicast over IEEE 802.11 WLANs suffers from two well-known problems: poor reliability and low spectral efficiency. To overcome these problems, we propose a novel PHY/MAC cross-layer wireless multicast scheme called reliable and adaptive multicast (RAMCAST). By considering the frame aggregation of IEEE 802.11n, RAMCAST enables an access point (AP) to selectively retransmit erroneous multicast...
In this paper, we propose a cross-layer optimization approach that exploits retransmission diversity in wireless CDMA communications. Conventionally, data packets that are not correctly detected are usually dropped. These dropped packets can be used to help data packet detection. By exploiting all the retransmitted packets, data packets can be correctly detected with higher probability. The proposed...
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