Sciweavers

GLOBECOM
2007
IEEE
13 years 11 months ago
A Simple Multiuser and Single-User Dual-Mode Downlink System with Limited Feedback
— Limited feedback systems that simultaneously transmit to multiple users are noise power limited at low SNR and interference power limited at high SNR. Specifically, there is a...
Chun Kin Au-Yeung, Seung Young Park, David James L...
GLOBECOM
2007
IEEE
13 years 11 months ago
Stability of Hierarchical Mobile Ad Hoc Networks
Abstract—In hierarchical mobile ad hoc networks, the architectual stability is a key factor in determining the network performance. There are many solutions proposed to construct...
Yi Xu, Wenye Wang
GLOBECOM
2007
IEEE
13 years 11 months ago
Iterative Channel Estimation for IDMA Systems in Time-Varying Channels
— In this paper, we develop low-complexity iterative channel estimation techniques for emerging IDMA systems. The channel estimators make use of pilots as well as soft decoded da...
Xiangyun Zhou, Zhenning Shi, Mark C. Reed
GLOBECOM
2007
IEEE
13 years 11 months ago
Soft Sensing and Optimal Power Control for Cognitive Radio
We consider a cognitive radio system where the secondary transmitter varies its transmit power based on all the information available from the spectrum sensor. The operation of th...
Sudhir Srinivasa, Syed Ali Jafar
GLOBECOM
2007
IEEE
13 years 11 months ago
Spectral Properties and Interpolation Error Analysis for Variable Sample Rate Conversion Systems
—The problem of variable sample rate conversion (SRC) has received much attention on account of its applications in software defined radios (SDRs) that must support a wide varie...
Andre Tkacenko
GLOBECOM
2007
IEEE
13 years 11 months ago
Inherent Security of Routing Protocols in Ad-Hoc and Sensor Networks
Many of the routing protocols that have been designed for wireless ad-hoc networks focus on energy-efficiency and guaranteeing high throughput in a non-adversarial setting. Howev...
Tanya Roosta, Sameer Pai, Phoebus Chen, Shankar Sa...
GLOBECOM
2007
IEEE
13 years 11 months ago
Reduced Complexity Sphere Decoding for Square QAM via a New Lattice Representation
— Sphere decoding (SD) is a low complexity maximum likelihood (ML) detection algorithm, which has been adapted for different linear channels in digital communications. The comple...
Luay Azzam, Ender Ayanoglu
GLOBECOM
2007
IEEE
13 years 11 months ago
Detection of Colluding Misbehaving Nodes in Mobile Ad Hoc and Wireless Mesh Networks
Abstract—Ubiquitous network connectivity and mobile communications have recently attracted remarkable attention. Wireless multihop networks such as Mobile Ad hoc Networks or Wire...
Kalman Graffi, Parag S. Mogre, Matthias Hollick, R...
GLOBECOM
2007
IEEE
13 years 11 months ago
Distributed Call Admission Protocol for Multi-Channel Multi-Radio Wireless Networks
- In this paper we propose a distributed call admission control protocol (DCAC) to provide bandwidth and delay guaranteed Quality of Service (QoS) in multihop wireless mesh network...
Yi Hu, Xiang-Yang Li, Haiming Chen, Xiaohua Jia