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ICASSP
2008
IEEE
16 years 1 months ago
SURE-LET multichannel image denoising: undecimated wavelet thresholding
We propose an extension of the recently devised SURE-LET grayscale denoising approach for multichannel images. Assuming additive Gaussian white noise, the unknown linear parameter...
Florian Luisier, Thierry Blu
ICASSP
2008
IEEE
16 years 1 months ago
A factor graph approach to joint iterative data detection and channel estimation in pilot-assisted IDMA transmissions
We consider a pilot-assisted interleave-division multiple access (IDMA) system transmitting over block-fading channels. We describe this system in terms of a factor graph and use ...
Clemens Novak, Gerald Matz, Franz Hlawatsch
ICASSP
2008
IEEE
16 years 1 months ago
Fast perfect weighted resampling
We describe an algorithm for perfect weighted-random sampling of a population with time complexity O(m + n) for sampling m inputs to produce n outputs. This algorithm is an increm...
Bart Massey
ICASSP
2008
IEEE
16 years 1 months ago
Iterative channel estimation and turbo equalization for time-varying OFDM systems
We develop a new receiver for orthogonal frequency division multiplexing (OFDM) systems in time-varying channels by embedding channel estimation in a low-complexity block turbo eq...
Kun Fang, Luca Rugini, Geert Leus
ICASSP
2008
IEEE
16 years 1 months ago
Composite hypothesis testing by optimally distinguishable distributions
Relying on optimally distinguishable distributions (ODD), it was defined very recently a new framework for the composite hypothesis testing. We resort to the linear model to inve...
Seyed Alireza Razavi, Ciprian Doru Giurcaneanu