Dunlop, J. and Gozalvez, J. (2003) Performance of link adaptation in GPRS networks. Electronics Letters, 39 (1). pp. 139-140. ISSN 0013-5194Full text not available in this repository. (Request a copy from the Strathclyde author)
In GPRS four coding schemes have been defined with different degrees of data protection. The selection of a fixed one for a certain packet transmission would lead to a throughput loss if the channel quality conditions vary during the connection, therefore, a link adaptation algorithm based on a block error rate (BLER) estimation is proposed and analyzed. The BLER is calculated from the acknowledgement messages reported by the receiver; so the acknowledgement frequency impacts the link adaptation, and therefore, is studied in the present article. The resulting link adaptation algorithm has been analyzed with a dynamic network simulator, under different frequency reuse patterns and frequency hopping strategies. Furthermore, the mean user throughput for the fixed coding schemes and for link adaptation has been estimated from GSM network reported measurements, and a network operator planning tool.
|Keywords:||access protocols, cellular radio, data communication, digital simulation, error statistics, frequency allocation, packet radio networks, telecommunication network planning, Electrical engineering. Electronics Nuclear engineering, Electrical and Electronic Engineering|
|Subjects:||Technology > Electrical engineering. Electronics Nuclear engineering|
|Department:||Faculty of Engineering > Electronic and Electrical Engineering|
|Depositing user:||Strathprints Administrator|
|Date Deposited:||16 Oct 2008|
|Last modified:||06 Jan 2017 04:59|