Author: Songpu Ai

0000000000976596

AUTHOR

Songpu Ai

Channel aggregation with guard-band in D-OFDM based CRNs: Modeling and performance evaluation

Channel aggregation (CA) techniques can offer flexible channel allocation and improve overall system performance in multi-channel cognitive radio networks (CRNs). Although many CA techniques have been proposed and studied, the impact of guard-band on CA for channel access has not been addressed in-depth. In this paper, we study the guard-band allocation mechanisms in discontinuous-orthogonal frequency division multiplexing (D-OFDM) based CRNs, and investigate the impact of guard-band sharing on SU flows when CA is enabled. Continuous time Markov chain (CTMC) based models have been developed in order to investigate the stochastic behavior of PU and SU flows. Based on our mathematical analysi…

research product

Domestic Electricity Demand and Peak Predictions Considering Influence of Weather Parameters

Masteroppgave informasjons- og kommunikasjonsteknologi - Universitetet i Agder, 2015 (Konfidensiell til/confidential until 01.07.2020)

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PEPhysical Sciences and Engineering
- PE2Fundamental Constituents of Matter
  - PE2_1Theory of fundamental interactions
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  - PE2_10Atomic, molecular physics
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  - PE2_13Quantum optics and quantum information
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- PE1Mathematics
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  - PE1_4 Algebraic and complex geometry
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  - PE11_1Engineering of biomaterials, biomimetic, bioinspired and bio-enabled materials
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  - PE11_4Engineering of polymers and plastics
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  - PE11_7Engineering of metal oxides
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  - PE11_12Semi-conducting and magnetic materials engineering
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LSLife Sciences
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  - LS4_1Organ and tissue physiology and pathophysiology
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  - LS4_6Microbiome and host physiology
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- LS5Neuroscience and Disorders of the Nervous System
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SHSocial Sciences and Humanities
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