Cooperative Spectrum Sharing Protocol with Secondary User Selection
Cooperative Spectrum Sharing Protocol with Secondary User Selection
复制标题
DOI：
10.1109/twc.2010.080210.091741
复制
发表时间：
2010-09
影响因子：
10.4
通讯作者：
Yang Han;S. Ting;A. Pandharipande
中科院分区：
文献类型：
--
作者：
Yang Han;S. Ting;A. Pandharipande
在本文中，我们提出了一个两阶段协议的基础上合作中继的辅助系统实现频谱接入沿着与主系统。主系统包括发射器-接收器对PT-PR，并且次系统包括M个发射器STi，i ∈ {1，2，...，实现主系统的请求目标速率的次发射机STp被选择用作主系统的解码转发（DF）中继。在STp的协作下，主系统能够在中继阶段容忍低于某个阈值的干扰，而不会降低其中断性能。然后，当STp中继主信号时，选择满足该干扰约束并为次系统提供最佳中断性能的次发射机ST s来同时接入频谱带。理论和仿真结果证实了所提出的频谱共享协议的有效性，我们表明，主系统和次系统都能够实现更好的中断性能随着M的增加。
In this paper, we propose a two-phase protocol based on cooperative relaying for a secondary system to achieve spectrum access along with a primary system. The primary system comprises of a transmitter-receiver pair PT-PR, and the secondary system comprises of M transmitters STi, i ∈ {1, 2,..., M} and a common receiver SR. The secondary transmitter STp which achieves the request target rate for the primary system is selected to serve as a decode-and-forward (DF) relay for the primary system. With the cooperation of STp, the primary system is able to tolerate interference lower than a certain threshold in the relaying phase, without degrading its outage performance. The secondary transmitter STs, which satisfies this interference constraint and provides the optimal outage performance for the secondary system, is then selected to access the spectrum band simultaneously when STp is relaying the primary signal. Theoretical and simulation results confirm the efficiency of the proposed spectrum sharing protocol, and we show that both primary and secondary systems are able to achieve better outage performance with increasing M.