Abstract: Abstract This article describes automatic repeat request (ARQ), a technique for improving the reliability of digitally‐transmitted data through the re‐transmission of corrupt frames. It begins by describing the use of cyclic redundancy check (CRC) codes to detect the presence of errors in received data. It then describes three protocols through which the transmitter and receiver coordinate the re‐transmission procedure; those protocols are “Stop‐and‐Wait,” “Go‐Back‐N”, and “Selective Repeat.” These three re‐transmission strategies are briefly analyzed in terms of their efficiency (“throughput”) and reliability (“frame error rate”). Finally, hybrid ARQ schemes, which incorporate both re‐transmission (ARQ) and forward‐error control (FEC) techniques, are discussed.
Publication Year: 2003
Publication Date: 2003-04-15
Language: en
Type: other
Indexed In: ['crossref']
Access and Citation
AI Researcher Chatbot
Get quick answers to your questions about the article from our AI researcher chatbot