Performance Assessment of Equal Gain Combining Fusion Rule in Cognitive Networks

Performance Assessment of Equal Gain Combining Fusion Rule in Cognitive Networks

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© 2022 by IJETT Journal
Volume-70 Issue-4
Year of Publication : 2022
Authors : Aparna Singh Kushwah, Vineeta Nigam
DOI :  10.14445/22315381/IJETT-V70I4P212

How to Cite?

Aparna Singh Kushwah, Vineeta Nigam, "Performance Assessment of Equal Gain Combining Fusion Rule in Cognitive Networks," International Journal of Engineering Trends and Technology, vol. 70, no. 4, pp. 146-151, 2022. Crossref, https://doi.org/10.14445/22315381/IJETT-V70I4P212

Abstract
Optimal use of spectrum is based on the investigation of the primary signal present in the spectrum. Various methods are discussed in the literature for signal detection. The research presented is about the performance evaluation of the Equal Gain Combining fusion rule in cognitive radio. The analysis of equal gain combining is executed using MATLAB simulations. The energy detector is used for individual sensing at each Cognitive Radio. Computer simulations reveal that Equal Gain Combining shows considerable detections at low SNR levels. As the level of SNR is increases, the detection capability also increases without imposing any burden on the channel regarding channel-state information. Further, the effect of varying the Time-Bandwidth Product and the total cognitive radios participating in the sensing is also analyzed. Results show that the ideal value for the Time-Bandwidth Product (u) is 10. Results reveal that the optimal number of cognitive radios used for combined sensing is 5.

Keywords
Equal Gain Combining, Energy Detection, Probability of false alarm, Time bandwidth product.

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