Title :
DLC strategies with flexible error control in wireless ATM
Author :
Sun, Zhenqiang ; Kimura, Shigetomo ; Ebihara, Yoshihiko
Author_Institution :
Comput. Network Lab., Tsukuba Univ., Ibaraki, Japan
Abstract :
Since the wireless channel is a band-limited one with multipath fading and highly burst errors, flexible error control is needed in data link control (DLC) protocol of wireless ATM networks. To support multimedia applications, two DLC strategies based on rate-compatible punctured turbo (RCPT) codes are proposed. One is a forward error correction (FEC) strategy, which applies RCPT codes to realize two protection levels for header and payload of wireless ATM cells. Its cell loss rate (CLR) is analyzed and found to be better than existing FEC schemes with about the same bandwidth increase. On a basis of the FEC strategy, hybrid automatic repeat request (HARQ) strategy is proposed to improve the throughput efficiency in wireless ATM networks
Keywords :
Rayleigh channels; asynchronous transfer mode; automatic repeat request; bandlimited communication; data communication; forward error correction; multimedia communication; multipath channels; packet radio networks; personal communication networks; protocols; turbo codes; DLC protocol; FEC; HARQ; Rayleigh fading channel; band-limited channel; bandwidth; burst errors; cell loss rate; data link control protocol; error control; forward error correction; header protection; hybrid automatic repeat request; multimedia applications; multipath fading; payload protection; personal communication networks; rate-compatible punctured turbo codes; throughput efficiency; wireless ATM cells; wireless ATM networks; wireless channel; Automatic repeat request; Computer networks; Decoding; Error correction; Forward error correction; Intelligent networks; Payloads; Protocols; Sun; Turbo codes;
Conference_Titel :
MILCOM 2000. 21st Century Military Communications Conference Proceedings
Conference_Location :
Los Angeles, CA
Print_ISBN :
0-7803-6521-6
DOI :
10.1109/MILCOM.2000.904919
