naa a22 4500 510793320 CHVBK 20180411083327.0 cr unu---uuuuu 180411e20130501xx s 000 0 eng 10.1007/s11277-012-0687-2 doi (NATIONALLICENCE)springer-10.1007/s11277-012-0687-2 A Cross-Layer Design for Rateless Coding with Optimal Packet Size over Block Fading Channels [Elektronische Daten] [Xijun Wang, Wei Chen, Zhigang Cao] Rateless codes are popular erasure-filling codes, which are capable of providing the potentially infinite amount of redundancy at the packet level. However, the optimal packet size has not been carefully studied in a wireless communication system from both the application layer and the physical layer. In this paper, a cross-layer approach is proposed to find an optimal rateless-coded packet size in order to maximize the goodput of a wireless system delivering fixed-length messages over block-fading channels. We analyze the system performance and identify the impacts of packet size on the reliability and efficiency. Moreover, the goodput can be improved using the proposed approach by balancing reliability and efficiency. We also compare the performance of the rateless coding system with the conventional system utilizing channel codes only. A better performance of the rateless coding system is shown at relative low signal-to-noise ratios and the goodput is enhanced by about 20 % at 0 dB. Springer Science+Business Media, LLC., 2012 Rateless codes nationallicence Wireless communications nationallicence Cross-layer design nationallicence Fading channels nationallicence Outage probability nationallicence Wang Xijun Broadband Wireless Communications Laboratory, Information Science Institute, State Key Laboratory of Integrated Service Networks, Xidian University, Xi'an, China aut Chen Wei Department of Electronic Engineering, Tsinghua National Laboratory for Information Science and Technology (TNList), Tsinghua University, Beijing, China aut Cao Zhigang Department of Electronic Engineering, Tsinghua National Laboratory for Information Science and Technology (TNList), Tsinghua University, Beijing, China aut Wireless Personal Communications Springer US; http://www.springer-ny.com 70/1(2013-05-01), 177-187 0929-6212 70:1<177 2013 70 11277 https://doi.org/10.1007/s11277-012-0687-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11277-012-0687-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Wang Xijun Broadband Wireless Communications Laboratory, Information Science Institute, State Key Laboratory of Integrated Service Networks, Xidian University, Xi'an, China aut NATIONALLICENCE 700 1- Chen Wei Department of Electronic Engineering, Tsinghua National Laboratory for Information Science and Technology (TNList), Tsinghua University, Beijing, China aut NATIONALLICENCE 700 1- Cao Zhigang Department of Electronic Engineering, Tsinghua National Laboratory for Information Science and Technology (TNList), Tsinghua University, Beijing, China aut NATIONALLICENCE 773 0- Wireless Personal Communications Springer US; http://www.springer-ny.com 70/1(2013-05-01), 177-187 0929-6212 70:1<177 2013 70 11277 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer