Exact bit‐error‐rate analysis of underlay decode‐and‐forward multi‐hop cognitive networks with estimation errors

K Ho‐Van, PC Sofotasios - IET Communications, 2013 - Wiley Online Library
This work is devoted to the error rate analysis of underlay multi‐hop cognitive networks with
arbitrary number of hops in the presence of multipath fading. Novel analytic expressions are …

Reactive relay selection in underlay cognitive networks with fixed gain relays

SI Hussain, MS Alouini, K Qaraqe… - 2012 IEEE international …, 2012 - ieeexplore.ieee.org
Best relay selection is a bandwidth efficient technique for multiple relay environments
without compromising the system performance. The problem of relay selection is more …

Partial relay selection in underlay cognitive networks with fixed gain relays

SI Hussain, MS Alouini, M Hasna… - 2012 IEEE 75th …, 2012 - ieeexplore.ieee.org
In a communication system with multiple cooperative relays, selecting the best relay utilizes
the available spectrum more efficiently. However, selective relaying poses a different …

Performance analysis of relay selection schemes in underlay cognitive networks with decode and forward relaying

H Chamkhia, MO Hasna, R Hamila… - 2012 IEEE 23rd …, 2012 - ieeexplore.ieee.org
In underlay cognitive networks with regenerative relaying, secondary users operating with
primary user are adhering to stringent interference constraint which limits their transmission …

Novel relay selection rules for average interference-constrained cognitive AF relay networks

P Das, NB Mehta, G Singh - IEEE Transactions on Wireless …, 2015 - ieeexplore.ieee.org
Cooperative relaying combined with selection exploits spatial diversity to significantly
improve the performance of interference-constrained secondary users in an underlay …

Exact outage probability of cognitive underlay DF relay networks with best relay selection

VNQ Bao, TQ Duong - IEICE Transactions on communications, 2012 - search.ieice.org
In this letter, we address the performance analysis of underlay selective decode-and-forward
(DF) relay networks in Rayleigh fading channels with non-necessarily identical fading …

Direct link-aware optimal relay selection and a low feedback variant for underlay CR

P Das, NB Mehta - IEEE Transactions on Communications, 2015 - ieeexplore.ieee.org
Cooperative relaying combined with selection has been extensively studied in the literature
to improve the performance of interference-constrained secondary users in underlay …

Outage probability analysis for a cognitive amplify‐and‐forward relay network with single and multi‐relay selection

G Chen, O Alnatouh, J Chambers - IET Communications, 2013 - Wiley Online Library
The authors evaluate the outage probability of a cognitive amplify‐and‐forward relay
network with cooperation between certain secondary users, chosen by single and multi …

Bit error rate of underlay multi-hop cognitive networks in the presence of multipath fading

K Ho-Van, PC Sofotasios - 2013 Fifth International Conference …, 2013 - ieeexplore.ieee.org
The bit error rate (BER) performance of underlay multi-hop cognitive networks with arbitrary
number of hops in the presence of multi-path fading is thoroughly analyzed in this paper. A …

Performance comparison between adaptive and fixed transmit power in underlay cognitive radio networks

H Hakim, H Boujemaa, W Ajib - IEEE transactions on …, 2013 - ieeexplore.ieee.org
In this paper, we compare the performance in terms of symbol error probability, data rate and
power consumption of the use of fixed transmit power (FTP) and adaptive transmit power …