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Raptor code, as one of the most popular forward error correction codes, has been widely used for reliable transmission over wireless channels. However, there's no standard and effective error checking mechanism in Raptor. In this paper, we fill CRC value in each encoded packet and propose an improved CRC coding approach for Raptor. In our algorithm, we lower the CRC computational complexity by generating...
This paper proposed a practicalfeedback scheme for fountain codes based transportprotocol in space communications. In the proposed scheme, the sender is signaled by two types of acknowledgment (ACK) packets.Before decoding, packet loss probability isestimated on the receiver side and encapsulated intoa soft ACKand sent to the sender.After decoding,decoding results are encapsulated into hard ACKsandsent...
The demands for wireless network bandwidth are rapidly increasing with the expanding number of mobile users as well as the diversification in types of services. Although fast-developing communication techniques continue to enlarge the network capacity, the growth rate of the huge amount of users' demands still outstrip the gains. Learning from the information cognition process of human brains, we...
Ultra Wideband (UWB) technology has attracted widespread attention all over the world for the potential applications in high-rate short-range communications. The existing UWB technologies, e.g., the direct-sequence UWB (DS-UWB) and the multi-band orthogonal frequency division multiplexing (MB-OFDM), have high complexity, which results in high power consumption and cost, and limits their marketing...
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