標題: Joint Resource Allocation for Multi-homing and Single-network Users in Heterogeneous Cognitive Radio Networks
作者: Chen, Feng
Fu, Mingjian
Jia, Wen-Kang
交大名義發表
National Chiao Tung University
關鍵字: heterogeneous cognitive radio network;resource allocation;Lagrangian dual decomposition;multi-homing;single-network
公開日期: 1-一月-2017
摘要: This paper investigates the resource allocation problem in heterogeneous cognitive radio networks (HCRNs). In this paper, two types of users, i.e., multi-homing and single-network cognitive radio users (CRUs), are considered to coexist in HCRNs. Multi-homing CRUs can access multiple networks simultaneously, while single-network CRUs can be served by only one network at a time. With the aim of maximizing the system capacity of HCRNs, the resource allocation problem is formulated as a joint multi-dimension optimization problem which includes network selection, bandwidth and power allocation for both multi-homing and single-network CRUs. However, the joint multi-dimension optimization leads the problem to be non-convex and NP-hard. To solve the problem efficiently, continuous relaxation is performed firstly, and next a near-optimal solution using Lagrangian dual decomposition and Karush-Kuhn-Tucker (KKT) conditions is proposed in this paper. Numerical results show the proposed algorithm improves the system capacity significantly compared to the traditional ones.
URI: http://hdl.handle.net/11536/147084
ISSN: 2325-3746
期刊: 2017 9TH INTERNATIONAL CONFERENCE ON WIRELESS COMMUNICATIONS AND SIGNAL PROCESSING (WCSP)
顯示於類別:會議論文