| Title: |
Noname manuscript No. (will be inserted by the editor) Effect of Opportunistic Scheduling on the Quality of Service Perceived by the Users in OFDMA Cellular Networks |
| Authors: |
M. K. Karray |
| Contributors: |
The Pennsylvania State University CiteSeerX Archives |
| Source: |
http://hal-ens.archives-ouvertes.fr/docs/00/59/03/67/PDF/Fading_AT.pdf. |
| Publication Year: |
2011 |
| Collection: |
CiteSeerX |
| Subject Terms: |
Opportunistic; Scheduling; Quality of Service; Information theory; Markov processes |
| Description: |
Our objective is to analyze the impact of fading and opportunistic scheduling on the quality of service perceived by the users in an Orthogonal Frequency-Division Multiple Access (OFDMA) cellular network. To this end, assuming Markovian arrivals and de-partures of customers that transmit some given data-volumes, as well as some temporal channel variabil-ity (fading), we study the mean throughput that the network offers to users in the long run of the system. Explicit formulas are obtained in the case of alloca-tion policies, which may or may-not take advantage of the fading, called respectively opportunistic and non-opportunistic. The main practical results of the present work are the following. Firstly we evaluate for the non-opportunistic allocation the degradation due to fading compared to Additive White Gaussian Noise (AWGN) (that is, a decrease of at least 13 % of the throughput). Secondly, we evaluate the gain induced by the opportunistic allo-cation. In particular, when the traffic demand per cell exceeds some value (about 2 Mbits/s in our numerical example), the gain induced by opportunism compen-sates the degradation induced by fading compared to |
| Document Type: |
text |
| File Description: |
application/pdf |
| Language: |
English |
| Relation: |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.635.9403 |
| Availability: |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.635.9403; http://hal-ens.archives-ouvertes.fr/docs/00/59/03/67/PDF/Fading_AT.pdf |
| Rights: |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
| Accession Number: |
edsbas.EB06DCA3 |
| Database: |
BASE |