Analysis of capacity limits over fading environment with imperfect channel state information for cognitive radio network

Bharti, Bindu; Singh, Ghanshyam

doi:10.1007/s12243-016-0556-1

Cited by 3 publications

(1 citation statement)

References 35 publications

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“…Van Hecke et al solved an optimization problem to minimize the outage performance of single‐carrier secondary networks based on a multiple‐antenna AF relay node in underlay cognitive‐radio ad hoc networks. In Bharti and Singh, an optimal CRN power‐allocation method was investigated under the impact of an imperfect CSI between the SU and the PU.…”

Section: Introductionmentioning

confidence: 99%

Secrecy performance of a generalized partial relay selection protocol in underlay cognitive networks

Tran

Choi

2018

Int J Communication

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Summary In this, we propose a generalized partial relay selection (PRS) protocol to enhance the secrecy performance for cooperative cognitive radio networks (CRNs) in terms of the secrecy outage probability (SOP) and the probability of non‐zero secrecy capacity (NSC). In the proposed scheme, a secondary source communicates with a secondary destination via the assistance of multiple secondary relays, in the presence of multiple secondary eavesdroppers and multiple primary users (PUs). With a reliance on the source‐relay channel state information (CSI), the source selects a group of the potential relays, and one is then chosen to forward the source data to the secondary destination using the randomize‐and‐forward (RF) technique. We consider the relay selection methods in two practical cases, where the CSIs of the eavesdropping links are available or not available. For the performance evaluation and comparison, we derived exact and asymptotic SOP and NSC closed‐form expressions for the proposed protocols and the corresponding full relay selection (FRS) protocol over Rayleigh‐fading channels. Finally, Monte Carlo simulations are presented to confirm the theoretical‐derivation correction. The results confirmed that the proposed protocols can outperform the conventional PRS protocols by designing the number of the potential relays appropriately.

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Section: Introductionmentioning

confidence: 99%