Multicarrier transmission schemes in cognitive radio

ARQ-based cross-layer optimization for wireless multicarrier transmission on cognitive radio networks

Computer Networks ◽

10.1016/j.comnet.2007.11.009 ◽

2008 ◽

Vol 52 (4) ◽

pp. 778-794 ◽

Cited By ~ 23

Author(s):

Alexandre de Baynast ◽

Petri Mähönen ◽

Marina Petrova

Keyword(s):

Cognitive Radio ◽

Cognitive Radio Networks ◽

Radio Networks ◽

Cross Layer ◽

Multicarrier Transmission ◽

Cross Layer Optimization

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Performance analysis of CIC multirate filter in cognitive radio for efficient pulse shaping in wireless domain

International Journal of Informatics and Communication Technology (IJ-ICT) ◽

10.11591/ijict.v8i3.pp184-190 ◽

2019 ◽

Vol 8 (3) ◽

pp. 184

Author(s):

A. S. Kang ◽

Er.Vishal Sharma ◽

Prof.Renu Vig

Keyword(s):

Cognitive Radio ◽

Performance Analysis ◽

Pulse Shaping ◽

Stop Band ◽

Comb Filter ◽

Multicarrier Transmission ◽

Design Engineers ◽

Rf Design ◽

Filter Bank Multicarrier ◽

Cic Filter

<span>In this paper, the Performance Analysis of Cascade Integrator Comb Filter in context of Filter Bank Multicarrier Transmission has been presented for Cognitive radio. A benefit of the chosen technique is that, a CIC filter can be designed with a slight adjustment in parameters of interest. The entire performance of the filters designed is analyzed and evaluated by analyzing Normalized Amplitude versus Normalized Frequency plots at typical K and N values. The roll off factor plays a significant role in performance analysis of CIC filter. The results shown are a useful advance for rf design engineers working in the domain of multirate signal processing in wireless communication. To ensure the acceptable performance of Enhanced FBMC, computational complexity, and transmission burst length need to be reduced. The effect of Stop band attenuation on the edges of Magnitude and Frequency responses has been studied under constraints such as Lp, K and M during different simulation runs</span>.

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Performance Prediction of OFDM-Based Cognitive Radio for Next-Generation Networking Capabilities

International Journal of Recent Technology and Engineering - 2 ◽

10.35940/ijrte.f8423.059120 ◽

2020 ◽

Vol 9 (1) ◽

pp. 1911-1919

Keyword(s):

Cognitive Radio ◽

Mobile Networks ◽

Orthogonal Frequency Division Multiplexing ◽

New Technology ◽

False Alarm Probability ◽

Probability Of Detection ◽

Next Generation ◽

Spectral Correlation ◽

Multicarrier Transmission ◽

Daily Life Activities

As a pioneering technology, next generation of mobile networks would overcome many problems of daily life activities. This new technology has many challenges that are tried to be destroyed. In this regard, to optimize the utilization of the allowed spectrum, an essential tool such as cognitive radio (CR) must be employed. It provides opportunity to use spectrum in strategic manner to both licensed and unlicensed users in such a way that the available spectrum is exploited in an efficient strategy. Meanwhile, the orthogonal frequency division multiplexing (OFDM) multicarrier transmission mechanism represents one of the more familiar techniques that are widely applied in free space systems of communication. Since this algorithm has the capability of satisfying the prime aspect of CR, which is associated with locally exploiting the unused spectrum autonomously, OFDM procedure is investigated as a CR system’s candidate. In other words, it is of interest to study its behavior when it is combined with CR technology. Here, our goal is to treat the problem of spectrum sensing techniques in conjunction with OFDM signal. Simulation results show that OFDM spectral correlation can be enhanced via varying the number of samples. Also, OFDM pilot is mandatory and acts as a flag for OFDM frames. So, it is of importance to boost it for better detection. Additionally, the probability of detection (Pd ) is estimated for different values of signal strength when the false alarm probability (Pf ) is fixed. Moreover, receiver operating characteristic, which is the variation of Pd as a function of Pf for a fixed SNR, is drawn for two cases; theoretical and simulated. It is found that the two cases are of high degree of coincidence.

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