NDLI: Relay transmit power allocation for distributed-space–time block code cognitive small cell networks

Content Provider	IET Digital Library
Author	Ndong, Massa Fujii, Takeo
Abstract	Small cell networks enhance spectrum efficiency by handling the indoor traffic of mobile networks on a frequency-reuse operation. Since most of the current mobile traffic happen in indoor, the authors introduce a prioritisation shift by imposing a limitation on the outage generated by the outdoor mobile system to the indoor small cells. The prioritisation shift consists of setting an outage probability threshold limitation on the macrocell system which is classically considered as a primary system. In this study, they consider downlink spectrum sharing between a system consisting of small cells and a macrocell with relays. The relays constitute a distributed-space-time block code (STBC) relaying for the outdoor system terminals. New closed-form expressions are derived to validate the proposed bit error rate (BER) function used in their optimisation algorithm considering STBC with unequal branch SNR. They propose a joint transmit antenna selection and power allocation which minimises the proposed BER. The proposed optimisation yields a dynamic selection of the relays with power control pertaining to the outdoor mobile terminal performance. The simulation results show that their proposal exhibits a better BER compared with the conventional Alamouti STBC with equal power allocation.
Starting Page	1691
Ending Page	1698
Page Count	8
ISSN	17518628
Volume Number	9
e-ISSN	17518636
Issue Number	Issue 14, Sep (2015)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/9/14
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2014.1093
Journal	IET Communications
Publisher Date	2015-08-21
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Alamouti STBC BER Function Bit Error Rate Function Cellular Radio Closed-form Expression Code Cognitive Radio Distributed-space-time Block Code Cognitive Small Cell Network Downlink Spectrum Sharing Error Statistics Frequency-reuse Operation Interpolation And Function Approximation Iterative Algorithm Iterative Method Legislation, Frequency Allocation And Spectrum Pollution Macrocell System Mobile Indoor Data Traffic Mobile Network Mobile Radio System Numerical Analysis Optimisation Optimisation Algorithm Optimisation Technique Outage Probability Power Control Probability Radio Spectrum Management Radio Transmitters Relay Network Relay Transmit Power Allocation Single Antenna Space-time Block Code Spectrum Efficiency Enhancement Statistics Telecommunication Telecommunication Traffic Transmit Antenna Selection Transmitting Antenna
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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