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VTC
2006
IEEE
14 years 1 months ago
Transmitter-Based Pre-Processing for OFDM-CDMA Forward-Link Systems with Two-Dimensional Spreading
—Transmitter-based signal pre-processing is investigated for the two-dimensional (2-D) OFDM-CDMA (orthogonal frequency division multiplexing, code division multiple access) forwa...
Chih-Cheng Kuo, Wern-Ho Sheen, Chung-Ju Chang, Cha...
GLOBECOM
2010
IEEE
13 years 5 months ago
Enabling Secondary Access through Robust Primary User Channel Assignment
Abstract--A common concept to mitigate the effects of spectrum scarcity is to allow opportunistic dynamic spectrum access (DSA) to licensed frequency bands. In this context, the li...
Jad Nasreddine, Andreas Achtzehn, Janne Riihij&aum...
WCNC
2008
IEEE
14 years 1 months ago
Joint Power and Bandwidth Allocation in Multihop Wireless Networks
Abstract—This paper considers power and bandwidth allocation to maximize the end-to-end rate in a multihop wireless network. Assuming an orthogonal frequency division multiplexin...
Deqiang Chen, J. Nicholas Laneman
SIPS
2006
IEEE
14 years 1 months ago
A Robust Band-Tracking Packet Detector (BT-PD) in OFDM-Based Ultra-Wideband Systems
Multiband orthogonal frequency-division multiplexing (MB-OFDM) systems employ frequencyhopping technology to achieve the capabilities of multiple access and frequency diversity. H...
Jyh-Ting Lai, Chun-Yuan Chu, An-Yeu Wu, Wen-Chiang...
ICC
2007
IEEE
14 years 1 months ago
A Systematic Design of Multiuser Space-Frequency Codes for MIMO-OFDM Systems
— While a great number of space-time (ST) code and space-frequency (SF) code designs have been extensively studied for point-to-point single-user links and directly applied to ea...
Wei Zhang, Khaled Ben Letaief