Power and Spectrum Allocation for Network Coded Primary-Secondary Cooperation in Cognitive Radio Networks

被引：0
|
作者：
Liu, Zhihui [1 ]
Xu, Wenjun [1 ]
Li, Shengyu [1 ]
Lu, Xiaomei [1 ]
Lin, Jiaru [1 ]
机构：
[1] Beijing Univ Posts & Telecommun, Key Lab Universal Wireless Commun, Minist Educ, Beijing 100876, Peoples R China
来源：
2014 GLOBECOM WORKSHOPS (GC WKSHPS) | 2014年
关键词：
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
It has become a research hotspot that the secondary user (SU) utilizes the frequency bands from primary users (PUs) while assisting PUs with data transmission in cogmtive radio networks (CRNs). In this paper, a new cooperation paradigm is studied in cogmtive multicast networks, in which one SU assists the data communication of two PUs simultaneously to harvest multiple spectrum access opportunities. Meanwhile, network coding is also employed to compress two PUs' transmission data and improve the resource utilization. Specially, the design of the network coding-based cooperation transmission is formulated as a joint power and spectrum allocation problem. The problem aims at maximizing SU's achievable transmission rate and guaranteeing the minimum transmission rate requirements of both PUs. To solve the problem efficiently, a finely-matched algorithm is proposed by exploiting the Karush-Kuhn-Tucker (KKT) conditions. Simulation results show the proposed network-coding-based primary-secondary cooperation can improve significantly the secondary transmission rate.
引用
收藏
页码：845 / 850
页数：6
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