... upon acceptance. Fully formattedPDF and full text (HTML) versions will be made available soon.Fair, efficient, and power-optimized spectrum sharing scheme for cognitive radio networksEURASIP ... power level, modulation scheme, and coding scheme. There are four major stages of the CR: (1) spectrum sensing, (2) spectrum management, (3) spectrum sharing, and (4) spectrum mobility [3]. ... detection and the optimal sharing of spectrum holes among CR users. Sharing schemes provides a way for spectrum allocation and multiplexing at the data packet level. Moreover, congestion and admission...