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 language | English (US) |
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Title of host publication | ICT 2010 |
Subtitle of host publication | 2010 17th International Conference on Telecommunications |
Pages | 171-176 |
Number of pages | 6 |
DOIs | |
State | Published - 2010 |
Externally published | Yes |
Event | 2010 17th International Conference on Telecommunications, ICT 2010 - Doha, Qatar Duration: Apr 4 2010 → Apr 7 2010 |
Other
Other | 2010 17th International Conference on Telecommunications, ICT 2010 |
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Country/Territory | Qatar |
City | Doha |
Period | 04/4/10 → 04/7/10 |
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