Title :
Performance analysis of an adaptive SR ARQ scheme for time-varying Rayleigh fading channels
Author :
Chakraborty, Shyam S. ; Liinaharja, Markku
Author_Institution :
Commun. Lab., Helsinki Univ. of Technol., Espoo, Finland
Abstract :
The performance of an adaptive selective-repeat automatic-repeat-request (SR ARQ) scheme with variable packet size is analysed in a time-varying Rayleigh fading channel. A Gilbert-Elliott model is used for the channel. Therefore, the state of the entire system can be modelled by a Markov chain. Channels with many different types of time behaviour can be modelled by adjusting the parameters of the general model. As the numerical results demonstrate, the time-varying characteristics of the channel have a great influence on the optimal values of the design parameters of the adaptive scheme
Keywords :
Markov processes; Rayleigh channels; adaptive systems; automatic repeat request; time-varying channels; ARQ protocol; BER; Gilbert-Elliott model; Markov chain; adaptive SR ARQ scheme; adaptive selective-repeat; automatic-repeat-request; bit error rate; design parameters; performance analysis; time behaviour; time-varying Rayleigh fading channels; time-varying characteristics; variable packet size; Automatic repeat request; Automatic speech recognition; Bit error rate; Communications technology; Fading; Laboratories; Performance analysis; Strontium; Table lookup; Tires;
Conference_Titel :
Communications, 2001. ICC 2001. IEEE International Conference on
Conference_Location :
Helsinki
Print_ISBN :
0-7803-7097-1
DOI :
10.1109/ICC.2001.936596
