Improved Cyclostationary-Based Spectrum Sensing with Multiple Antennas in Fading and Shadowing Environments
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Ying Zhu
,
Zhiyong Feng
Abstract
Spectrum sensing is a key technical challenge for cognitive radio (CR). It is well known that multi-cycle cyclostationarity (MC) detector is a powerful method for spectrum sensing. However, conventional MC detector is difficult to implement due to its high computational complexity. This paper pays attention to the fact that the computation complexity can be reduced by simplifying the test statistic of conventional MC detector. Based on this simplification process, an improved MC detector is proposed. Compared with the conventional one, the proposed detector has the low-computational complexity and high-accuracy on sensing performance. Subsequently, the sensing performances are further investigated for the cases of Rayleigh, Nakagami-m, Rician and composite Rayleigh fading-shadowing channels. Furthermore, the square-law combining (SLC) is introduced to improve the detection capability in fading and shadowing environments. The corresponding closed-form expressions of average detection probability are derived for each case by the moment generation function (MGF) approach. Finally, illustrative and analytical results show that the efficiency and reliability of proposed detector and the improvement on sensing performance by SLC in fading and shadowing environments.
©2014 by Walter de Gruyter Berlin/Boston
Artikel in diesem Heft
- Frontmatter
- Performance Analysis of Cooperative Fixed-Gain Relaying over Asymmetric Fading Channels
- Sensing-throughput Trade off for Interference-aware Cognitive Radio Networks
- Improved Cyclostationary-Based Spectrum Sensing with Multiple Antennas in Fading and Shadowing Environments
- Distortion Range Determination Methodology
- A New Model of CFAR Detector
- Novel Teletraffic Analysis of GSM/EDGE Orthogonal Sub Channel (OSC) and Application to Spectrum Re-farming
- The Influence of the Number of Relay Antennas on the Secure DoF with Active Cooperation
- Relay Management in Energy-aware Cooperative Ad Hoc Networks: A Perspective of Stochastic Game
- Comparison of the Influence of Intra-cell Traffic and Finite Number of Mobile Phones on the Determination of Number of Channels in the BTS of GSM Network
- Approximate Message Passing Algorithms for Distributed Iterative Receiver
- An Adaptive Stopping Rule for Distributed Opportunistic Spectrum Access Systems with Multi-channel and Multi-user
- Defense against Lion Attack in Cognitive Radio Systems using the Markov Decision Process Approach
Artikel in diesem Heft
- Frontmatter
- Performance Analysis of Cooperative Fixed-Gain Relaying over Asymmetric Fading Channels
- Sensing-throughput Trade off for Interference-aware Cognitive Radio Networks
- Improved Cyclostationary-Based Spectrum Sensing with Multiple Antennas in Fading and Shadowing Environments
- Distortion Range Determination Methodology
- A New Model of CFAR Detector
- Novel Teletraffic Analysis of GSM/EDGE Orthogonal Sub Channel (OSC) and Application to Spectrum Re-farming
- The Influence of the Number of Relay Antennas on the Secure DoF with Active Cooperation
- Relay Management in Energy-aware Cooperative Ad Hoc Networks: A Perspective of Stochastic Game
- Comparison of the Influence of Intra-cell Traffic and Finite Number of Mobile Phones on the Determination of Number of Channels in the BTS of GSM Network
- Approximate Message Passing Algorithms for Distributed Iterative Receiver
- An Adaptive Stopping Rule for Distributed Opportunistic Spectrum Access Systems with Multi-channel and Multi-user
- Defense against Lion Attack in Cognitive Radio Systems using the Markov Decision Process Approach
