Title :
A scheme to adopt dynamic selection of error-correcting codes in hybrid ARQ protocol
Author :
Zhong, Liu ; Xuemai, Gu ; Qing, Guo ; Shilou, Jia
Author_Institution :
Dept. of Radio Eng., Harbin Inst. of Technol., China
Abstract :
Automatic repeat request (ARQ) has been widely used for its high reliability and convenience in implementation. But its low performance is shown when the channel is in a noisy state. This paper presents an adaptive error control scheme with combination of FEC and ARQ. An encoder and a decoder for large constraint length convolution codes are constructed by TMS320E25 microprocessors to implement error control. Based on channel condition, the system can modify the diffuse convolution codes constraint length automatically. Such an adaptive error control system combined with an ARQ system based on HDLC protocol is efficient to transmit data at high speed using bad radio channels
Keywords :
adaptive codes; adaptive control; automatic repeat request; convolutional codes; data communication; decoding; digital signal processing chips; error correction codes; forward error correction; land mobile radio; protocols; telecommunication channels; telecommunication control; FEC; HDLC protocol; TMS320E25 microprocessors; adaptive error control scheme; automatic repeat request; bad radio channels; channel condition; decoder; diffuse convolution codes; dynamic selection; encoder; error-correcting codes; high speed data transmission protocols; hybrid ARQ protocol; large constraint length convolution codes; noisy channel; performance; reliability; Adaptive control; Adaptive systems; Automatic repeat request; Convolution; Decoding; Error correction; Error correction codes; Forward error correction; Microprocessors; Programmable control;
Conference_Titel :
Information Theory, 1995. Proceedings., 1995 IEEE International Symposium on
Conference_Location :
Whistler, BC
Print_ISBN :
0-7803-2453-6
DOI :
10.1109/ISIT.1995.531148
