2013/01/03 by Vo Nguyen Quoc Bao, Bao, Vo Nguyen Quoc, Tran Thien Thanh +6
Computer Science · Engineering · Mathematics · #Cognitive Radio Networks and Spectrum Sensing #Cooperative Communication and Network Coding #FOS: Computer and information sciences #Full-Duplex Wireless Communications #Information Theory (cs.IT) #cs.IT #math.IT
paper · pdf · doi:10.48550/arxiv.1301.0384
11 pages, 8 figures, accepted on "Journal of Communications and Networks"
arxiv created 2013/01/03 · openalex publication_date 2013/01/03 · arxiv updated 2013/01/04 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The exact closed-form expressions for outage probability and bit error rate of spectrum sharing-based multi-hop decodeand- forward (DF) relay networks in non-identical Rayleigh fading channels are derived. We also provide the approximate closed-form expression for the system ergodic capacity. Utilizing these tractable analytical formulas, we can study the impact of key network parameters on the performance of cognitivemulti-hop relay networks under interference constraints. Using a linear network model, we derive an optimum relay position scheme by numerically solving an optimization problem of balancing average signal-to-noise ratio (SNR) of each hop. The numerical results show that the optimal scheme leads to SNR performance gains of more than 1 dB. All the analytical expressions are verified by Monte-Carlo simulations confirming the advantage ofmultihop DF relaying networks in cognitive environments.