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On the Energy Detection of Unknown Signals Over Fading Channels
TLDR
This letter addresses the problem of energy detection of an unknown signal over a multipath channel. Expand
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Variable-rate variable-power hybrid M-FSK M-QAM for fading channels
This paper investigates a variable-rate variable-power hybrid non-coherent M-FSK M-QAM system. The goal is to combine the spectral efficiency merit of M-QAM with the power efficiency advantage ofExpand
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On the energy detection of unknown signals over fading channels
TLDR
This paper presents another look at the problem of energy detection of unknown signals over different fading channels. Expand
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Distributed Spectrum Sensing With Sequential Ordered Transmissions to a Cognitive Fusion Center
TLDR
We employ the idea of sequential detection to obtain a quick, yet reliable, decision regarding primary activity regarding primary licensed users. Expand
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Joint Power and Channel Allocation for Cognitive Radios
  • F. Digham
  • Computer Science
  • IEEE Wireless Communications and Networking…
  • 15 April 2008
TLDR
We devise a near-optimal yet simple algorithm with linear complexity targeting capacity maximization of a cognitive radio network while jointly optimizing power and channel allocation among users. Expand
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Variable-rate noncoherent M-FSK modulation for power limited systems over Nakagami-fading channels
TLDR
We propose a variable-rate and fixed-power noncoherent M-ary frequency shift keying (MFSK) modulation scheme for power limited systems. Expand
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Cooperative sensing with sequential ordered transmissions to secondary fusion center
TLDR
We employ sequential detection scheme together with ordered transmissions from cognitive detectors. Expand
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Power-efficient wireless OFDMA using limited-rate feedback
TLDR
Suboptimal channel quantization based on limited-rate feedback for OFDMA in the power-limited regime . Expand
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Optimizing power efficiency of OFDM using quantized channel state information
TLDR
The present paper develops loading algorithms to minimize transmit-power under rate and error probability constraints, using three types of channel state information at the transmitter (CSIT): deterministic (per channel realization), statistical (channel mean) for fast fading links, and quantized (Q), whereby a limited number of bits are fed back from the transmitter to the receiver. Expand
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A probabilistic MAC for cognitive radio systems with energy harvesting nodes
TLDR
We propose an energy-based probabilistic access scheme in which SU probabilistically accesses and senses the primary channel. Expand
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