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Coexistence Issues in Cognitive Radios Based on Ultra-Wide Bandwidth Systems
White Paper This paper discusses the basic concepts underlying Cognitive Radio (CR) and investigates the Ultra Wide Bandwidth (UWB) technology as one of the enabling transmission techniques for the implementation of CR systems. [11 Jul 2008]
Distributed Load Balancing Algorithm for Adaptive Channel Allocation for Cognitive Radios
White Paper The growing interest in the cognitive radio technology and its capability to offer more efficient spectrum usage brought this problem back as one of the most popular research topics nowadays. This paper presents two quite simple to implement... [10 Jul 2008]
An Efficient Implementation of NC-OFDM Transceivers for Cognitive Radios
White Paper This paper presents an efficient implementation of a Non-Contiguous Orthogonal Frequency Division Multiplexing (NC- OFDM) transceiver for cognitive radio systems. NC-OFDM is designed to transmit information in the presence of incumbent users... [11 Apr 2007]
Adaptive-Mode Peak-to-Average Power Ratio Reduction Algorithm for OFDM-Based Cognitive Radio
White Paper This paper presents a novel low complexity algorithm for reducing the Peak-to-Average Power Ratio (PAPR) occurring in OFDM-based cognitive radios. The proposed algorithm exploits the agility of cognitive radio technology to rapidly choose and... [11 Apr 2007]
MultiMAC - An Adaptive MAC Framework for Dynamic Radio Networking
White Paper Such radios offer the promise of spectrum agility and re-configurability through flexibility at the MAC and physical layers. Software-defined/cognitive radio has recently made the jump from a purely research driven endeavor to one that is now being... [12 May 2006]
Reactive Cognitive Radio Algorithms for Co-Existence Between IEEE 802.11b and 802.16a Networks
White Paper Dynamic Frequency Selection (DFS) enables radios to choose the band with the least interference. This paper investigates the use of reactive cognitive radio algorithms to enable co-existence between IEEE 802.11b and 802.16a networks in the same... [16 Mar 2006]
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