55 search results - page 6 / 11 » Reduced DCT approximations for low bit rate coding |
TIT
2010
13 years 2 months ago
2010
Motivated by a recent surge of interest in convex optimization techniques, convexity/concavity properties of error rates of the maximum likelihood detector operating in the AWGN ch...
TWC
2010
13 years 2 months ago
2010
The maximum likelihood estimate of the impulse response of a frequency-selective channel in the presence of phase noise and I/Q imbalance is derived. The complexity of the joint es...
TIP
2002
13 years 7 months ago
2002
Abstract--Transcoding is a key technique for reducing the bitrate of a previously compressed video signal. A high transcoding ratio may result in an unacceptable picture quality wh...
EVOW
2007
Springer
14 years 1 months ago
2007
Springer
Abstract. Overcompression is the process of post-processing compressed images to gain either further size reduction or improved quality. This is made possible by the fact that the ...
ICIP
2001
IEEE
14 years 9 months ago
2001
IEEE
In this paper, we extend our previous work onjoint source-channel coding to scalablevideo transmissionover wireless direct-sequence code-division-multiple-access(DS-CDMA)multipath...