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Bit loading with BER-constraint for multicarrier systems
TLDR
We present discrete adaptive bit loading algorithms for multicarrier systems with uniform (nonadaptive) power allocation operating in a frequency selective fading environment. Expand
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An Efficient Implementation of NC-OFDM Transceivers for Cognitive Radios
TLDR
We present an efficient implementation of a non-contiguous orthogonal frequency division multiplexing (NC-OFDM) transceiver for cognitive radio systems. Expand
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Cognitive engine implementation for wireless multicarrier transceivers
TLDR
This paper presents a genetic-algorithm driven, cognitive radio decision engine that determines the optimal radio transmission parameters for single and multi carr er systems. Expand
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Sidelobe Suppression for OFDM-Based Cognitive Radios Using Constellation Expansion
TLDR
In this paper, we present a novel algorithm for reducing sidelobe interference power levels in OFDM-based cognitive radios. Expand
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Peak-to-Average Power Ratio Analysis for NC-OFDM Transmissions
TLDR
We present a statistical analysis of the peak-to-average power ratio (PAPR) for non-contiguous orthogonal frequency division multiplexing (NC-OFDM) signals. Expand
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Effects of Bit Allocation on Non-Contiguous Multicarrier-Based Cognitive Radio Transceivers
TLDR
In this paper, we evaluate a cognitive radio transceiver employing both non-contiguous multicarrier modulation (NC-MCM) and adaptive bit allocation. Expand
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A framework for statistical wireless spectrum occupancy modeling
TLDR
We propose a novel spectrum occupancy model based on a combination of several different probability density functions (PDFs) defining various features of a specific spectrum band with several concurrent transmissions. Expand
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Quantitative Comparison of Agile Modulation Techniques for Cognitive Radio Transceivers
TLDR
We present a quantitative comparison of two agile modulation techniques employed by cognitive radio transceivers operating in a dynamic spectrum access (DSA) network. Expand
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A Spectrum Surveying Framework for Dynamic Spectrum Access Networks
TLDR
In this paper, we propose a generic spectrum-surveying framework that introduces both standardization and automation to this process, as well as enables a distributed approach to spectrum surveying. Expand
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