Peak‐to‐average power ratio reduction in multiple‐input multiple‐output orthogonal frequency‐division multiple access systems using geodesic descent method. Issue 2 (1st January 2016)

• Record Type: Journal Article
• Authors: Beko, Marko; Marikj, Milica; Dinis, Rui; Tuba, Milan
• Is Part Of: IET communications. Volume 10:Issue 2(2016)
• Page Start: 212
• Page End: 218
• Publication Date: 2016-01-01
• Subjects: telecommunication power management -- MIMO communication -- OFDM modulation -- differential geometry -- iterative methods -- error statistics; peak‐to‐average power ratio reduction -- PAPR reduction -- multiple‐input multiple‐output orthogonal frequency‐division multiplexing -- subcarriers subsets -- resource blocks -- iterative sphere‐geodesic descent method -- Riemannian structure -- bit error rate; Telecommunication systems -- Periodicals; Speech processing systems -- Periodicals; 621.38205
• DOI: 10.1049/iet-com.2015.0563
• Languages: English
• ISSNs: 1751-8628

Abstract

Abstract : In this study, the authors consider a peak‐to‐average power ratio (PAPR) reduction for orthogonal frequency‐division multiplexing systems based on the decomposition of the set of subcarriers in subsets of subcarriers, denoted resource blocks, each one weighted by a different complex factor. They present a new iterative sphere‐geodesic descent method for obtaining these weighting factors so as to minimise the PAPR of the transmitted signals. This method, which they term geodesic descent method, efficiently makes use of the Riemannian structure of the power constraint. The authors' performance results show that the proposed technique provides good trade‐off between the PAPR reduction and the bit error rate performance, for both uncoded and coded scenarios.