NDLI: Cooperative dynamic spectrum access for small cell networks with interference mitigation and QoS guarantee

Content Provider	IEEE Xplore Digital Library
Author	Fengzhu Ye Xing Zhang
Copyright Year	2013
Description	Author affiliation: Wireless Signal Process. & Network Lab., Beijing Univ. of Posts & Telecommun., Beijing, China (Fengzhu Ye; Xing Zhang)
Abstract	Deployment of small cells (SCs) can provide high network capacity and extend the coverage for macrocells. However, when more small base stations are deployed or the traffic loads of macro users become heavier, interference becomes the major obstacle impacting the potential gain of SCs. In this paper, a cooperative dynamic spectrum access (CDSA) scheme under orthogonal channel deployment with centralized control manner is proposed. The CDSA allows SCs to sense the resource blocks (RBs) periodically. The optimal sensing period is determined using efficacy coefficient method to minimize the cross-tier interference and provide QoS guarantee at the same time. The effective capacity (EC) and interference ratio function of sensing period are also derived for the above solution in CDSA. To alleviate intra-tier interference and improve spectrum efficiency, CDSA achieves the optimal RBs allocation and power control by applying the particle swam optimization (PSO) method. Simulation results demonstrate that the CDSA performs much better on interference mitigation and QoS guarantee than the fixed and the randomized schemes under co-channel deployment. Especially in when the SCs are very dense or the traffic load of the macrocell is very heavy, the improvement of CDSA is obviouser.
Sponsorship	IEEE Malaysia ComSoc/VTS Joint Chapt.
Starting Page	396
Ending Page	400
File Size	236971
Page Count	5
File Format	PDF
ISBN	9781479915323
DOI	10.1109/MICC.2013.6805861
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-11-26
Publisher Place	Malaysia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Macrocell networks Power control Interference Quality of service Sensors Delays Resource management
Content Type	Text
Resource Type	Article

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