An Adaptive Packet and Block Length Forward Error Correction for Video Streaming Over Wireless Networks |
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| Authors: | Ming-Fong Tsai Naveen Chilamkurti Ce-Kuen Shieh |
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| Affiliation: | (1) Department of Computer Science and Information Engineering, National Changhua University of Education, Bao-Shan Campus, No. 2, Shi-Da Rd., Changhua, Taiwan;(2) Department of Electrical Engineering, Institute of Computer and Communication Engineering, National Cheng Kung University, No. 1, University Rd., Tainan, Taiwan;(3) Department of Computer Science and Information Engineering, National Kinmen Institute of Technology, No. 1, University Rd., Jinning, Kinmen, Taiwan |
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| Abstract: | Video streaming over wireless networks is a challenging task due to its high error rate. Forward error correction (FEC) is
a popular mechanism to recover lost packets for video streaming. Conventional FEC mechanisms use a whole redundant packet
to recover the error source packet, when the packet error occurs with only a few bit errors inside. In this paper, we propose
an Adaptive packet and block length FEC (APB-FEC) control mechanism. In order to overcome the high bit error rate, a small
packet length reduces the packet error rate and a large FEC block length will enhance the recovery performance. Our proposed
APB-FEC can obtain better recovery performance than conventional FEC mechanisms. Hence, APB-FEC can also reduce retransmission
overhead. Using extensive emulations, we validate the efficiency of APB-FEC mechanism for video streaming over wireless networks. |
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