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In wideband communication systems, Multi-Input Multi-Output Orthogonal Frequency Division Multiplexing (MIMO-OFDM) has been proposed as an efficient technique to enhance the link reliability and the spectral efficiency. However, the high Peak to Average Power Ratio (PAPR) of the output signals degrades the advantage of the MIMO-OFDM systems. In order to overcome this issue, several methods requiring...
Orthogonal frequency division multiplexing (OFDM) modulation technique is a promising transmission scheme for high performance broadband wireless communications. However, as a drawback, this scheme suffers from the high peak to average power ratio (PAPR) of the output signals. In order to overcome this issue, several methods requiring the transmission of side information SI bits have been proposed...
Cooperative multiband spectrum sensing presents the next generation of cognitive radio networks, where multiple bands are sensed and accessed to improve spectrum maintenance and to enhance the network throughput. In order to concretize this concept, several uniform cooperative spectrum sensing techniques have been proposed in literature which suffers from a high complexity computation over the global...
Multiple input multiple output (MIMO) orthogonal frequency division multiplexing (OFDM) is a promising transmission scheme for high performance broadband wireless communications. However, this technique suffers from a major drawback which is the high peak to average power ratio (PAPR) of the output signals. In order to overcome this issue, several methods requiring the transmission of explicit side...
Selected Mapping (SLM) is a promising technique dedicated to reduce the Peak-to-Average Power Ratio (PAPR) in OFDM systems. In this technique, different representations of OFDM symbols are generated by rotating the original frame using different phase sequences. Then, the signal having the minimum PAPR is selected and transmitted. To compensate the effect of the phase rotation at the receiver side,...
Orthogonal Frequency Division Multiplexing (OFDM) technique is a promising modulation scheme for high performance broadband wireless communications. This technique suffers from a major drawback which is the high Peak to Average Power Ratio (PAPR) of the output signals. In order to resolve this issue, several methods that require the transmission of explicit side information (SI) have been proposed...
In this paper, we propose a novel optimized blind selected mapping (SLM) technique that avoids the need of the use of any side information (SI) through the joint exploitation of a set of rotated and unrotated QAM constellation of the Orthogonal Frequency Division Multiplexing (OFDM) signal and that consequently performs the role of an inherent embedded signaling for the OFDM system. Furthermore, in...
Multiple-Input Multiple-Output Orthogonal Frequency Division Multiplexing (MIMO-OFDM) is a promising modulation scheme for high performance broadband wireless communications that suffers from a major drawback, which is the high Peak-to-Average Power Ratio (PAPR) of the output signals. In this paper, we propose a new blind combined Alamouti Space-Time Bloc Codes (STBC) approach inspired from the Selected...
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