As the complexities of wireless technologies increase, novel multidisciplinary approaches
for the spectrum sharing/management are required with inputs from the technology …

Cognitive Radio (CR) can significantly improve the utilization of the precious radio spectrum
by allowing Secondary Users (SUs) to borrow the licensed spectrum if they do not cause …

Inefficient use of radio spectrum is becoming a serious problem as more and more wireless
systems are being developed to operate in crowded spectrum bands. Cognitive radio offers …

In this paper, we present a joint antenna beamforming and power allocation technique to
maximize the multiuser sum rate in an underlying microcellular system which reuses the …

There have been increasing interests in integrating cooperative diversity into Cognitive
Radios (CRs). However, conventional cooperative diversity protocols require at least two …

Two coexisting ad hoc networks, primary and secondary, are considered, where each node
of the primary network has a single antenna, while each node of the secondary network is …

传统的认知无线电技术采用机会频谱接入, 认知用户的通信质量难以得到保证.
通过利用多天线技术提供的空间信号处理能力, 该文提出一种基于空分复用的机会频谱接入方法 …

This paper explores the so-called “transparent coexistence” paradigm for spectrum sharing
between primary and secondary nodes in a multi-hop network environment. Although such …

The dominate spectrum sharing paradigm of today is interference avoidance, where a
secondary network can use the spectrum only when such a use is not interfering with the …

This paper focuses on multi-antenna interference rejection combing (IRC) based black-
space cognitive radio (BS-CR) operation. The idea of BS-CR is to transmit secondary user …