Adegbite, Saheed A. and McMeekin, Scott G. and Stewart, Brian G. (2016) A low complexity SI sequence estimator for pilot-aided SLM–OFDM systems. AEÜ - International Journal of Electronics and Communications / Archiv für Elektronik und Übertragungstechnik, 70 (9). 1267–1274. ISSN 1434-8411
Adegbite_etal_IJEC_2016_A_low_complexity_SI_sequence_estimator_for_pilot_aided.pdf - Accepted Author Manuscript
Restricted to Repository staff only until 14 July 2017.
Download (581kB) | Request a copy from the Strathclyde author
Selected mapping (SLM) is a well-known method for reducing peak-to-average power ratio (PAPR) in orthogonal frequency division multiplexing (OFDM) systems. However, as a consequence of implementing SLM, OFDM receivers often require estimation of some side information (SI) in order to achieve successful data recovery. Existing SI estimation schemes have very high computational complexities that put additional constraints on limited resources and increase system complexity. To address this problem, an alternative SLM approach that facilitates estimation of SI in the form of phase detection is presented. Simulations show that this modified SLM approach produces similar PAPR reduction performance when compared to conventional SLM. With no amplifier distortion and in the presence of non-linear power amplifier distortion, the proposed SI estimation approach achieves similar data recovery performance as both standard SLM–OFDM (with perfect SI estimation) and also when SI estimation is implemented through the use of an existing frequency-domain correlation (FDC) decision metric. In addition, the proposed method significantly reduces computational complexity compared with the FDC scheme and an ML estimation scheme.
|Keywords:||OFDM, side-information detection, selected mapping, PAPR reduction, 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:||Pure Administrator|
|Date Deposited:||04 Nov 2016 14:34|
|Last modified:||24 Apr 2017 02:45|