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Performance Analysis of Scheduled TAS Cognitive Radio System with Generalized Selection Combining

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Abstract

In this paper, a multiuser multiple-input-multiple-output, cognitive radio (CR) system has been analysed with transmit antenna selection (TAS) at CR base station transmitter and generalized selection combining GSC (N r , N c ) at each CR user. Multiuser diversity gain is obtained by selecting best CR user on the basis of instantaneous post processed signal-to-noise ratio (SNR) at the CR-Rx. The improved average post processed SNR and ergodic capacity of proposed TAS/GSC system is a function of best chosen receiver branches. The proposed TAS/GSC system is constrained by interference temperature limit ‘Q’ at primary user (PU) Rx, which degrades overall throughput hence peak power (P p ) of CR base station is set to be less than ‘Q’. We also derive analytic expressions for ergodic capacity and average post processed SNR. The simulation result validates with analytical result.

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Authors and Affiliations

  1. Department of Electronics and Communication Engineering, Thapar University, Patiala, Punjab, 147004, India

    Kavita Vij Bindra, Surbhi Sharma & Rajesh Khanna

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  1. Kavita Vij Bindra
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  2. Surbhi Sharma
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Correspondence to Kavita Vij Bindra.

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Bindra, K.V., Sharma, S. & Khanna, R. Performance Analysis of Scheduled TAS Cognitive Radio System with Generalized Selection Combining. Wireless Pers Commun 95, 1567–1582 (2017). https://doi.org/10.1007/s11277-016-3867-7

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