Smart Antennas for Wireless Communications: IS-95 and Third Generation CDMA Applications
Smart Antennas for Wireless Communications: IS-95 and Third Generation CDMA Applications
Adaptive Wireless Transceivers: Turbo-Coded, Turbo-Equalised and Space-Time Coded TDMA, CDMA, MC-CDMA and Ofdm Systems
Wavelet packet modulation for wireless communications: Research Articles
Wireless Communications & Mobile Computing
Spectrum sensing measurements of pilot, energy, and collaborative detection
MILCOM'06 Proceedings of the 2006 IEEE conference on Military communications
Improving an OFDM reception using an adaptive Nyquist windowing
IEEE Transactions on Consumer Electronics
Cognitive radio: brain-empowered wireless communications
IEEE Journal on Selected Areas in Communications
ISNN 2009 Proceedings of the 6th International Symposium on Neural Networks: Advances in Neural Networks - Part III
Probabilistic coexistence and throughput of cognitive dual-polarized networks
EURASIP Journal on Wireless Communications and Networking - Special issue on dynamic spectrum access: from the concept to the implementation
On Time-Frequency Resource Leasing in Cognitive Radio Networks
Wireless Personal Communications: An International Journal
TV white spaces exploitation for multimedia signal distribution
Image Communication
A Comparative Study of Different Entropies for Spectrum Sensing Techniques
Wireless Personal Communications: An International Journal
Wireless Personal Communications: An International Journal
Fault-Tolerant Cooperative Spectrum Sensing Scheme for Cognitive Radio Networks
Wireless Personal Communications: An International Journal
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The ever growing demand for wireless services has placed enormous burden on valuable resources such as spectral bandwidth. This has resulted in a major rethinking in resource allocation policies culminating in an explosion of research activity in the field of Cognitive Radio (CR) towards optimum resource usage. In this tutorial paper the physical layer design and transmission techniques for CR in the context of efficient spectrum utilization are discussed. Spectrum sensing as the key element of CR awareness is described. Orthogonal frequency division multiplexing (OFDM) as a spectrally efficient modulation scheme is discussed and the rationale for its use in the CR system is explained. Spectrum pooling for efficient use of spectrum is studied and the role of adaptive OFDM techniques in this method is highlighted. Wavelet basis function as a replacement of Fourier transform in OFDM is evaluated. MIMO system as an added value to the CR performance is described. Adaptive Waveform and beamforming as alternative techniques in CR are reviewed.