Research Article
Outage Probability for Cognitive Heterogeneous Networks with Unreliable Backhaul Connections
@INPROCEEDINGS{10.1007/978-3-319-74176-5_17, author={Huy Nguyen and Dac-Binh Ha and Sang Nguyen and Won-Joo Hwang}, title={Outage Probability for Cognitive Heterogeneous Networks with Unreliable Backhaul Connections}, proceedings={Industrial Networks and Intelligent Systems. 3rd International Conference, INISCOM 2017, Ho Chi Minh City, Vietnam, September 4, 2017, Proceedings}, proceedings_a={INISCOM}, year={2018}, month={1}, keywords={Cognitive Radio Cooperative system Wireless backhaul Outage probability Nakagami- fading}, doi={10.1007/978-3-319-74176-5_17} }- Huy Nguyen
Dac-Binh Ha
Sang Nguyen
Won-Joo Hwang
Year: 2018
Outage Probability for Cognitive Heterogeneous Networks with Unreliable Backhaul Connections
INISCOM
Springer
DOI: 10.1007/978-3-319-74176-5_17
Abstract
To enhance the spectrum scarcity of cooperative heterogeneous networks (HetNets) with unreliable backhaul connections, we examine the impact of cognitive spectrum sharing over multiple small-cell transmitters in Nakagami- fading channels. In this system, the secondary transmitters are connected to macro-cell via wireless backhaul links and communicate with the secondary receiver by sharing the same spectrum with the primary user. Integrating cognitive radio (CR), we address the combined power constraints: (1) the peak interference power and (2) the maximal transmit power. In addition, to exclude the signaling overhead for exchanging channel-state-information (CSI) at the transmitters, the selection combining (SC) protocol is assumed to employ at the receivers. The closed-form statistics of the end-to-end signal-to-noise (SNR) ratio are derived to attain the exact formulas of outage probability and its asymptotic performance to reveal further insights into the effective unreliable backhaul links.