Joint signal detection and synchronization for OFDM based cognitive radio networks and its implementation

Kumar, M. Ashok; Majhi, Sudhan

doi:10.1007/s11276-017-1586-y

Cited by 8 publications

(2 citation statements)

References 40 publications

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“…The first term in equation (10) refers to the valuable data that has been attenuated and rotated. The ISI attributable to symbols transmitted on the same sub-channel is given in the second term, and the ICI computed over the entire frame is given in the third term.…”

Section: Frequency Offset Error In Wofdmmentioning

confidence: 99%

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Effects of Synchronization Errors on Wavelet-based CR-OFDM Systems in Doubly Selective Fading Channels

RANGASWAMY¹,

Surekha²

2023

Wireless Pers Commun

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The major setback of a Multi-Carrier Modulation (MCM) is Synchronization Errors, which includes time, frequency and phase offset. Especially, Wavelet based MCM catches the eyes of researchers due to its flexibilities which are seen as one of the strong contender for Cognitive Radios. Synchronization errors are mainly due to mobility between nodes and suboptimal local oscillators and it is necessary to learn the behaviour of wavelets under these channel fading conditions. In this paper, we present the joint effects of Wavelet-based Cognitive Radio OFDM (CR-WOFDM) systems under Synchronization Error in terms of based bit error rate (BER). BER Outputs of WOFDM is compared with FFT based OFDM with Cyclic Prefix (CP-OFDM) systems in a doubly-selective channel by designing a communication system for computer simulation. Several well-known wavelets are chosen and analysed, including Daubechies (db), Symlets (sym), Coiflets (coif), Fejér-Korovkin (fk) filters, and biorthogonal (bior) wavelets. First, we show the behaviour of wavelets in terms of BER by considering different doubly selective channel Power Delay Profile (PDP) like, AWGN, FLAT, Pedestrian and Vehicular and channel Doppler models like, Uniform and JAKES. Finally, we calculate and plot Signal-to-Interference Ratio (SIR) of WOFDM with Time and Frequency Offset and compared the results with FFT based CP-OFDM.

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Section: Frequency Offset Error In Wofdmmentioning

confidence: 99%

“…For OFDM-based Cognitive Radio Network, signal detector and synchronization parameter estimators are combined in [10,5]. Author presented a minimum cost detection scheme in multipath fading channel for cognitive radio.…”

Section: Introductionmentioning

confidence: 99%

Effects of Synchronization Errors on Wavelet-based CR-OFDM Systems in Doubly Selective Fading Channels

RANGASWAMY¹,

Surekha²

2023

Wireless Pers Commun

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show abstract

Interference-Aware QoS Guarantees in OFDM-Based Cognitive Radio Networks Based on Branch and Bound

Benmouna

Benmammar

2021

Wireless Pers Commun

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Intelligent and secure transceiver design and implementation for future wireless communication

Majhi

2020

CSIT

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Joint signal detection and synchronization for OFDM based cognitive radio networks and its implementation

Cited by 8 publications

References 40 publications

Effects of Synchronization Errors on Wavelet-based CR-OFDM Systems in Doubly Selective Fading Channels

Effects of Synchronization Errors on Wavelet-based CR-OFDM Systems in Doubly Selective Fading Channels

Interference-Aware QoS Guarantees in OFDM-Based Cognitive Radio Networks Based on Branch and Bound

Intelligent and secure transceiver design and implementation for future wireless communication

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