Analytical Expressions for the Power Spectral Density of CP-OFDM and ZP-OFDM Signals

Waterschoot, Toon van; Nir, Vincent Le; Duplicy, Jonathan; Moonen, Marc

doi:10.1109/lsp.2010.2040651

Cited by 71 publications

(42 citation statements)

References 9 publications

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“…However, when it comes to spectral properties, OFDM waveform shows some limitations. An analytic expression for the power spectral density of the OFDM with CP (CP-OFDM) waveform is proposed in [49]. The result of the derived expression is recalled in (1):…”

Section: Modulation Schemes For Opportunistic Radiomentioning

confidence: 99%

Advances in opportunistic radio technologies for TVWS

Noguet

Gautier

Berg

2011

J Wireless Com Network

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Cognitive radio has been an active research area in wireless communications over the past 10 years. TV Digital Switch Over resulted in new regulatory regimes, which offer the first large-scale opportunity for cognitive radio and networks. This article considers the most recent regulatory rules for TV White Space opportunistic usage, and proposes technologies to operate in these bands. It addresses techniques to assess channel vacancy by the cognitive radio, focusing on the two incumbent systems of the TV bands, namely TV stations and wireless microphones. Spectrum-sensing performance is discussed under TV White Space regulation parameters. Then, modulation schemes for the opportunistic radio are discussed, showing the limitations of classical multi-carrier techniques and the advantages of filter bank modulations. In particular, the low adjacent band leakage of filter bank is addressed, and its benefit for spectrum pooling is stressed as a means to offer broadband access through channel aggregation.

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Section: Modulation Schemes For Opportunistic Radiomentioning

confidence: 99%

Advances in opportunistic radio technologies for TVWS

Noguet

Gautier

Berg

2011

J Wireless Com Network

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“…[25], the AF of the transmitted signal has the form For all simulations, a high-speed constant velocity target, whose parameters are listed in Table 1, is considered.…”

Section: Simulation Resultsmentioning

confidence: 99%

A Bayesian track-before-detect procedure for passive radars

Jishy¹,

Lehmann

2013

EURASIP J. Adv. Signal Process.

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This article presents a Bayesian algorithm for detection and tracking of a target using the track-before-detect framework. This strategy enables to detect weak targets and to circumvent the data association problem originating from the detection stage of classical radar systems. We first establish a Bayesian recursion, which propagates the target state probability density function. Since raw measurements are generally related to the target state through a nonlinear observation function, this recursion does not admit a closed form expression. Therefore, in order to obtain a tractable formulation, we propose a Gaussian mixture approximation. Our targeted application is passive radar, with civilian broadcasters used as illuminators of opportunity. Numerical simulations show the ability of the proposed algorithm to detect and track a target at very low signal-to-noise ratios.

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“…It also offers simple frequency division equalization towards mitigating interference arising from multipath propagation. The working principle of this scheme with respect to transmitter and receiver is as shown in Figure. [40], Katselis [41], and Waterschoot et al [42]. The approaches are majorly in the direction of optimizing uplinks, mitigating interference, enhancing convolution, supporting FFT in cognitive radio, addressing synchronization problems in OFDM, addressing PAPR issues, optimizing power spectral density.…”

Section: ) Cp-ofdm Waveformmentioning

confidence: 99%

Studying Applicability Feasibility of OFDM in Upcoming 5G Network

K.P¹,

N²

2017

ijacsa

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Abstract-Orthogonalfrequency-division multiplexing (OFDM) is one of unbeatable multiplexing technique till date. However with increasing version of next generation mobile standards like 5G, the applicability of OFDM is quite questionable. The prime reason behind this is in order to offer higher data rates and extensive networking services in 5G, OFDM will be required to overcome some inherent problems of spectral leakage, power consumption, less supportability of increased channel capacity. The reason community still believes that there is positive scope of OFDM to be applicable in 5G network provided it undergoes certain changes. This paper reviews some of the complimentary waveforms that have been theoretically proven to be adding edge to OFDM system. The paper reviews different waveforms as well as multiple access techniques to be used in designing 5G technology and assess their effectiveness in viewpoint of research applicability and effectiveness towards leveraging 5G.

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Analytical Expressions for the Power Spectral Density of CP-OFDM and ZP-OFDM Signals

Cited by 71 publications

References 9 publications

Advances in opportunistic radio technologies for TVWS

Advances in opportunistic radio technologies for TVWS

A Bayesian track-before-detect procedure for passive radars

Studying Applicability Feasibility of OFDM in Upcoming 5G Network

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