Discrete-rate adaptation schemes in multi-channel systems with finite-length buffer

Sang Do Lee*, Jeong Jae Won, Ki Hong Park, Young Chai Ko

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Assuming a single-user multi-channel system, we study the performance of joint adaptive modulation and finitelength buffer. For higher spectral efficiency and more efficient usage of channel resources, we introduce hybrid schemes using discrete-rate adaptation jointly with discrete-power adaptation and selection-diversity. To analyze the queuing operation, we characterize the channel state of each scheme and derive the transition probability of the queue state and its stationary distribution. Furthermore, we investigate the system performance, in terms of the spectral efficiency, the packet dropping rate and the average delay. Numerical results show that hybrid scheme offers noticeable performance gain over the conventional adaptive modulation.

Original languageEnglish (US)
Title of host publicationICT 2010
Subtitle of host publication2010 17th International Conference on Telecommunications
Pages171-176
Number of pages6
DOIs
StatePublished - 2010
Externally publishedYes
Event2010 17th International Conference on Telecommunications, ICT 2010 - Doha, Qatar
Duration: Apr 4 2010Apr 7 2010

Other

Other2010 17th International Conference on Telecommunications, ICT 2010
CountryQatar
CityDoha
Period04/4/1004/7/10

Keywords

  • Discrete-rate adaptation
  • Finite state markov chain
  • Joint adaptive modulation and finite-length buffer
  • Multichannel system

ASJC Scopus subject areas

  • Computer Networks and Communications

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