TY - GEN
T1 - Discrete-rate adaptation schemes in multi-channel systems with finite-length buffer
AU - Lee, Sang Do
AU - Won, Jeong Jae
AU - Park, Ki Hong
AU - Ko, Young Chai
PY - 2010
Y1 - 2010
N2 - 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.
AB - 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.
KW - Discrete-rate adaptation
KW - Finite state markov chain
KW - Joint adaptive modulation and finite-length buffer
KW - Multichannel system
UR - http://www.scopus.com/inward/record.url?scp=77954545644&partnerID=8YFLogxK
U2 - 10.1109/ICTEL.2010.5478644
DO - 10.1109/ICTEL.2010.5478644
M3 - Conference contribution
AN - SCOPUS:77954545644
SN - 9781424452477
T3 - ICT 2010: 2010 17th International Conference on Telecommunications
SP - 171
EP - 176
BT - ICT 2010
T2 - 2010 17th International Conference on Telecommunications, ICT 2010
Y2 - 4 April 2010 through 7 April 2010
ER -