Sciweavers

9 search results - page 2 / 2
» The Effect of Imperfect Carrier Frequency Offset Estimation ...
Sort
View
ICASSP
2011
IEEE
12 years 8 months ago
Robust frequency synchronization for an OFDMA uplink system disturbed by a Cognitive Radio system interference
In Cognitive Radio (CR) systems, spectrum sensing plays a key role to determine the free frequency bands. However, when the primaryuser (PU) signal spectrum exhibits localized fad...
Hector Poveda, Guillaume Ferre, Eric Grivel
VTC
2006
IEEE
105views Communications» more  VTC 2006»
13 years 10 months ago
Iterative Equalization and Decoding for Unsynchronized OFDMA Uplink Transmissions
— For the uplink transmission of a coded OFDMA system, we present an iterative receiver that performs joint frequency offset acquisition, channel estimation and maximum a posteri...
Man-On Pun, Michele Morelli, C. C. Jay Kuo
BROADNETS
2004
IEEE
13 years 8 months ago
The Effects of the Sub-Carrier Grouping on Multi-Carrier Channel Aware Scheduling
Channel-aware scheduling and link adaptation (LA) methods are widely considered to be crucial for realizing high data rates in wireless networks. Multi-carrier systems that spread...
Fanchun Jin, Gokhan Sahin, Amrinder Arora, Hyeong-...
VTC
2007
IEEE
150views Communications» more  VTC 2007»
13 years 11 months ago
Effects of Non-Ideal Channel Feedback on Dual-Stream MIMO-OFDMA System Performance
— In this paper we analyze the downlink OFDMA system-level performances of a 2x2 dual-stream MIMO multiuser transmission scheme under the assumptions of partial and noisy channel...
István Z. Kovács, Klaus I. Pedersen,...