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» On the Bit Extraction Problem
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WCNC
2008
IEEE
16 years 17 days ago
A Transcoding-Free Multiple Description Coder for Voice over Mobile Ad-Hoc Networks
— We propose a new multiple description (MD) coder design based on the Adaptive Multi-Rate Wideband (AMRWB) coder that can support transcoding-free communication between an ad-ho...
Jagadeesh Balam, Jerry D. Gibson
GLOBECOM
2007
IEEE
16 years 16 days ago
Low PAPR STBCs from Complex Partial-Orthogonal Designs (CPODs)
— Space-time codes from complex orthogonal designs (CODs) with no zero entries offer low Peak to Average power ratio (PAPR) and avoid the problem of turning off antennas. But COD...
Gopu V. R. Muni Kumar, B. Sundar Rajan
ICC
2007
IEEE
129views Communications» more  ICC 2007»
16 years 16 days ago
Time Sharing Policy in Wireless Networks for Variable Rate Transmission
— For most of wireless services with variable rate transmission, both average rate and rate oscillation are important performance metrics. One often needs to decide how much rate...
Xiaolu Zhang, Meixia Tao, Chun Sum Ng
ICC
2007
IEEE
143views Communications» more  ICC 2007»
16 years 16 days ago
Impact of Sampling Jitter on Mostly-Digital Architectures for UWB Bio-Medical Applications
Abstract— Ultra-wideband (UWB) impulse radio is a promising technique for low-power bio-medical communication systems. While a range of analog and digital UWB architectures exist...
Andrew Fort, Mike Chen, Robert W. Brodersen, Claud...
IDEAS
2007
IEEE
135views Database» more  IDEAS 2007»
16 years 15 days ago
Bitmap Index Design Choices and Their Performance Implications
Historically, bitmap indexing has provided an important database capability to accelerate queries. However, only a few database systems have implemented these indexes because of t...
Elizabeth J. O'Neil, Patrick E. O'Neil, Kesheng Wu