Sciweavers

INFOCOM
2007
IEEE
14 years 5 months ago
Modeling the Effect of Transmit Power and Physical Carrier Sense in Multi-Hop Wireless Networks
—In this paper, we extend both Bianchi’s and Kumar’s models and characterize the channel activities governed by IEEE 802.11 DCF in multi-hop wireless networks from the perspe...
Yong Yang, Jennifer C. Hou, Lu-Chuan Kung
INFOCOM
2007
IEEE
14 years 5 months ago
Transmit Power Distribution of Wireless Ad Hoc Networks with Topology Control
— Topology control and routing protocols are used by designers of wireless packet data networks to lower the node degree, simplify routing and lower the nodes’ energy consumpti...
Dan Avidor, Sayandev Mukherjee, Furuzan Atay Onat
ICC
2007
IEEE
14 years 5 months ago
Design of Single-Group Multicasting-Beamformers
— For the single-group multicast scenario, where K users are served with the same data by a base station equipped with N antennas, we present two beamforming algorithms which out...
Raphael Hunger, David A. Schmidt, Michael Joham, A...
ICC
2007
IEEE
211views Communications» more  ICC 2007»
14 years 5 months ago
MIMO Cooperative Diversity in a Transmit Power Limited Environment
— This paper considers a fading relay channel where the total transmit power used is constrained to be equal to that of the standard single-hop channel. The relay channel used op...
Allan J. Jardine, Steve McLaughlin, John S. Thomps...
GLOBECOM
2007
IEEE
14 years 5 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
CISS
2007
IEEE
14 years 5 months ago
Wireless Multicasting with Channel Uncertainty
— We consider wireless multicasting where a source of common information is transmitted to a group of receivers over block fading channels. Communication between the transmitter ...
Jie Luo, Anthony Ephremides
PIMRC
2008
IEEE
14 years 5 months ago
Constrained opportunistic power control in wireless networks
— In the opportunistic power control algorithm (OPC), designed in [1], [2], each user tries to keep the product of its transmit power and its experienced effective interference t...
Mehdi Rasti, Ahmad R. Sharafat
INFOCOM
2008
IEEE
14 years 5 months ago
Power-Adjusted Random Access to a Wireless Channel
—The operation of widely-deployed random access to wireless networks is based on limited information on the result of each access attempt. When making a random access attempt, us...
Young-June Choi, Kang G. Shin
GLOBECOM
2008
IEEE
14 years 6 months ago
Capacity Analysis of an Opportunistic Scheduling System in a Spectrum Sharing Environment
Abstract—We analyze the capacity of an opportunistic scheduling system in a spectrum sharing environment where multiple secondary users can share a frequency spectrum with multip...
Tae Won Ban, Dan Keun Sung, Bang Chul Jung, Wan Ch...
CISS
2008
IEEE
14 years 6 months ago
Resource and power costs in dynamic spectrum allocation
— We consider a network setting, where a single Service Provider (SP) provides wireless data services to a group of users in the downlink. The transmission model is similar to OF...
Joydeep Acharya, Roy D. Yates