Paper Info
Title
A low-complexity cross-antenna rotation and inversion scheme for PAPR reduction of STBC MIMO-OFDM systems
Abstract
In this paper, a reduced-complexity cross-antenna rotation and inversion (CARI) scheme based on the cross-entropy (CE) method is proposed for the reduction of peak-to-average power ratio (PAPR) in multiple-input multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) systems with space-time block coding (STBC). A few PAPR reduction techniques for STBC MIMO-OFDM systems have been proposed in the literature, among which the CARI technique can significantly reduce the PAPR by fully utilizing additional degrees of freedom provided by employing multiple transmit antennas. However, the CARI technique requires an exhaustive search over all combinations of rotation and inversion, whose complexity increases exponentially with the number of subblocks. To simultaneously reduce the complexity and offer lower PAPR, the PAPR reduction with CARI technique is formulated as a combinatorial optimization problem and then the CE method is applied to search the optimal combination of rotation and inversion. Simulation results show that the proposed CE-based scheme is an efficient method to greatly reduce the complexity for larger numbers of subblocks while still achieving significant PAPR reduction of STBC MIMO-OFDM systems.
Year
DOI
Venue
2011
10.1109/CAMAD.2011.5941112
CAMAD
Keywords
Field
DocType
optimisation,inversion scheme,combinatorial optimization,multiple input multiple output,papr reduction,space-time block coding (stbc),ofdm modulation,orthogonal frequency division multiplexing,orthogonal frequency division multiplexing (ofdm),cross-entropy method,combinatorial mathematics,space-time block coding,cross-entropy (ce) method,peak-to-average power ratio (papr),multiple-input multiple-output (mimo),mimo communication,antennas,space-time block codes,ofdm,peak-to-average power ratio,low-complexity cross antenna rotation,mimo systems,stbc,optimization,space time block code,indexing terms,exhaustive search,simulation,degree of freedom,cross entropy,cross entropy method
MIMO-OFDM,Mathematical optimization,Brute-force search,Computer science,Inversion (meteorology),Block code,Algorithm,Cross-entropy method,Combinatorial optimization,Real-time computing,Space–time block code,Orthogonal frequency-division multiplexing
Conference
ISBN
Citations 
PageRank 
978-1-61284-280-6
1
0.36
References 
Authors
7
4
Name
Order
Citations
PageRank
Yi-Sheng Su1488.42
Tsung-Cheng Wu2205.14
Chung-Hsuan Wang39515.98
Min-Kuan Chang413622.55