Sciweavers

42 search results - page 6 / 9
» Downlink OFDMA Resource Allocation Under Partial Channel Sta...
Sort
View
TCOM
2010
99views more  TCOM 2010»
13 years 6 months ago
Code design for MIMO downlink with imperfect CSIT
—In this letter, we implement a simplified version of the Cover - van der Meulen - Hajek - Pursley (CMHP) coding originally characterized by Wajcer, Wiesel, and Shamai. The vect...
Hyung-Tae Kim, Sung Hoon Lim, Inkyu Lee, Saejoon K...
ICC
2007
IEEE
146views Communications» more  ICC 2007»
13 years 11 months ago
Downlink MIMO Systems Using Cooperation Among Base Stations in a Slow Fading Channel
To increase the achievable sum rate of downlink MIMO (Multiple Input Multiple Output) systems, the cooperation among Base Stations (BS) is investigated in a slow fading channel. Th...
Tsuyoshi Tamaki, Kibeom Seong, John M. Cioffi
CORR
2010
Springer
140views Education» more  CORR 2010»
13 years 7 months ago
Energy Optimization across Training and Data for Multiuser Minimum Sum-MSE Linear Precoding
This paper considers minimum sum mean-squared error (sum-MSE) linear transceiver designs in multiuser downlink systems with imperfect channel state information. Specifically, we de...
Adam J. Tenenbaum, Raviraj S. Adve
GLOBECOM
2007
IEEE
13 years 11 months ago
CAC for Multibeam Opportunistic Schemes in Heterogeneous WiMax Systems Under QoS Constraints
Spatial scheduling in a heterogeneous WiMax Downlink channel, based on partial Channel State Information at the Transmitter (CSIT), is carried out through a multibeam opportunistic...
Nizar Zorba, Ana I. Pérez-Neira
ICC
2009
IEEE
101views Communications» more  ICC 2009»
13 years 5 months ago
Adaptive Bitrate and Resource Allocation for Relay-Assisted ARQ Transmissions
Automatic repeat request (ARQ) protocols deal with the situations where the selected data rate is not supported by the current channel realization. The inappropriate selection is m...
Adrian Agustin, Josep Vidal, Olga Muñoz