Title :
A novel CRC based error correction scheme in OFDM/OFDMA wireless networks
Author :
Chen Chia-Yao ; Jia Wen-Kang ; Chen Yaw-Chung
Author_Institution :
Institutes of Comput. Sci. & Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan
Abstract :
Recently, the Orthogonal Frequency Division Multiplexing Access (OFDM/OFDMA) based wireless transmission technology has been widely accepted by consumers. Frame Check Sequence (FCS) scheme was employed to enhance the reliability of OFDM/OFDMA systems. Since the padding overhead cannot be effectively avoided in OFDM/OFDMA when MAC frames are encapsulated. We propose a novel CRC based error correction scheme by utilizing the frame padding to carry extra segmented FCS information as much as possible; compared with legacy FCS scheme, our approach obtains a significant improvement in error detection and correction upon the first retransmission (2nd transmission). In addition, we demonstrate a significant performance improvement based on the mathematic analysis.
Keywords :
OFDM modulation; access protocols; cyclic redundancy check codes; error correction; frequency division multiple access; radio networks; CRC based error correction scheme; MAC frames; frame check sequence; orthogonal frequency division multiplexing access; padding overhead; wireless transmission technology; Bit error rate; Error correction; Neodymium; OFDM; Receivers; Wireless networks; Cyclic Redundancy Check (CRC); Error Correction; OFDM; OFDMA; Padding;
Conference_Titel :
Information Theory and its Applications (ISITA), 2010 International Symposium on
Conference_Location :
Taichung
Print_ISBN :
978-1-4244-6016-8
Electronic_ISBN :
978-1-4244-6017-5
DOI :
10.1109/ISITA.2010.5649682
