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CCS
2011
ACM
14 years 6 months ago
Privacy and accountability for location-based aggregate statistics
A significant and growing class of location-based mobile applications aggregate position data from individual devices at a server and compute aggregate statistics over these posi...
Raluca A. Popa, Andrew J. Blumberg, Hari Balakrish...
ICC
2008
IEEE
16 years 1 months ago
Unitary Precoding Techniques Based on Transmit-MRC for MIMO Wireless Systems
— This paper proposes a low complexity unitary precoding scheme for multiple-input multiple-output (MIMO) systems. The singular-value decomposition (SVD) based transmission is ca...
Seokhwan Park, Heunchul Lee, Sang-Rim Lee, Inkyu L...
VTC
2008
IEEE
16 years 1 months ago
Irregular Generic Detection Aided Iterative Downlink SDMA Systems
— When an iterative-decoding aided system is configured to operate at a near-capacity performance, an excessive complexity may be imposed by the iterative process. In this paper...
Chun-Yi Wei, Lajos Hanzo
ICC
2007
IEEE
110views Communications» more  ICC 2007»
16 years 1 months ago
Joint Source and Channel Coding for Image Transmission over Time Varying Channels
—In this paper, the joint source and channel coding for progressive image transmission over channels with varying SNR is considered. Since the feedback of channel status informat...
Lei Cao
ICC
2007
IEEE
119views Communications» more  ICC 2007»
16 years 1 months ago
A Convex Quadratic SDMA Grouping Algorithm Based on Spatial Correlation
Abstract— Space Division Multiple Access (SDMA) is a promising solution to improve the spectral efficiency of future mobile radio systems. However, finding the group of MSs tha...
Tarcisio F. Maciel, Anja Klein