Taskaldiran, Mustafa and Morling, Richard C.S. and Kale, Izzet (2007) A comparative study on the modified Max-Log-MAP turbo decoding by extrinsic information scaling. IEEE 5th Annual Wireless Telecommunication Symposium (WTS 2007). pp. 1-5. ISSN 1934-5070
A simple but effective technique to improve the performance of the Max-Log-MAP algorithm is to scale the extrinsic information exchanged between two MAP decoders. A comprehensive analysis of the selection of the scaling factors according to channel conditions and decoding iterations is presented in this paper. Choosing a constant scaling factor for all SNRs and iterations is compared with the best scaling factor selection for changing channel conditions and decoding iterations. It is observed that a constant scaling factor for all channel conditions and decoding iterations is the best solution and provides a 0.2-0.4 dB gain over the standard Max- Log-MAP algorithm. Therefore, a constant scaling factor should be chosen for the best compromise.
|Subjects:||University of Westminster > Science and Technology > Electronics and Computer Science, School of (No longer in use)|
|Depositing User:||Mustafa Taskaldiran|
|Date Deposited:||23 Mar 2009 15:03|
|Last Modified:||11 Aug 2010 14:35|
Actions (login required)
|Edit Item (Repository staff only)|