|標題:||A cross-layer error correction scheme based on multiple-CRC in OFDM/OFDMA wireless networks|
Department of Computer Science
|關鍵字:||cyclic redundancy check;error correction;OFDM;OFDMA|
|摘要:||The orthogonal frequency division multiplexing access (OFDM/OFDMA) based wireless transmission technology has been widely deployed in recent years. The frame check sequence (FCS) scheme is employed to enhance the reliability of OFDM/OFDMA systems. Since the padding overhead cannot be effectively avoided in OFDM/OFDMA when medium access control frames are encapsulated, we propose a novel cyclic redundancy check based error correction scheme by utilizing the padding space to carry extra segmented FCS information as much as possible; compared with the legacy FCS scheme, our approach greatly enhance the error detection and correction upon the first retransmission (second transmission). A significant performance improvement based on the simulation results is also demonstrated.|
|期刊:||JOURNAL OF THE CHINESE INSTITUTE OF ENGINEERS|
|Appears in Collections:||Articles|
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