3 papers
cs.NI2008
Performance Comparison of Cooperative and Distributed Spectrum Sensing in Cognitive Radio
Zheng Sun, Wenjun Xu, Zhiqiang He +1
In this paper, we compare the performances of cooperative and distributed spectrum sensing in wireless sensor networks. After introducing the basic problem, we describe two strateg…
cs.NI2008
Criteria on Utility Designing of Convex Optimization in FDMA Networks
Zheng Sun, Wenjun Xu, Zhiqiang He +1
In this paper, we investigate the network utility maximization problem in FDMA systems. We summarize with a suite of criteria on designing utility functions so as to achieve the gl…
cs.NI2008
A Heuristic Scheduling Scheme in Multiuser OFDMA Networks
Zheng Sun, Zhiqiang He, Ruochen Wang +1
Conventional heterogeneous-traffic scheduling schemes utilize zero-delay constraint for real-time services, which aims to minimize the average packet delay among real-time users. H…