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Rate-Distortion Optimized Bandwidth Adaptation for Distributed Media Delivery
White Paper This paper proposes a framework for rate-distortion optimized bandwidth adaptation via packet dropping at a network node, when the incoming traffic at the node consists of multiple video streams. The... [10 Sep 2008]
MIMO OFDM Receivers for Systems With IQ Imbalances
White Paper The resulting IQ distortion limits the achievable operating SNR at the receiver and, consequently, the achievable data rates. Orthogonal frequency division multiplexing (OFDM) is a widely recognized modulation scheme for... [10 Aug 2008]
H.264/AVC Fine Grain Scalability Using Bitplane Coding
White Paper The H.264/AVC standard represents an important step in the evolution of video coding standards since it offers a significant improvement in terms of rate-distortion efficiency by providing more than a... [04 Aug 2008]
QoS Specific Medium Access Control for Wireless Sensor Networks With Fading
White Paper Based on the density of sensor deployment and the QoS requirement specified by the maximum distortion for random field reconstruction, QUIRE partitions the sensor network into disjoint and equal-sized cells. [04 Aug 2008]
A Rate Control Scheme for H.264 Video Under Low Bandwidth Channel
White Paper The dilemma of the Quantization Parameter (QP) being involved in both rate control and Rate-Distortion Optimization (RDO) prevents using the traditional rate control... [11 Jul 2008]
An Iterative Approach to Optimal Non-Uniform Sampling and Instantaneous Bandwidth Estimation
White Paper The proposed method is based on estimation of a time-distortion transformation, under which the original signal becomes bandlimited and can thus be reconstructed. This method is optimal in the sense that it requires the... [11 Jul 2008]
Characterization of Optic Networks for High Bit Rate Time Division Multiplexed and Dense Wavelength Division Multiplexed Transport
White Paper These higher bit rates and narrower spaced channels make it necessary to examine impairments such as continuity, dispersion, and distortion, in order to qualify network performance, especially in uncharacterized and/or... [03 Jul 2008]
Compress-and-Forward Cooperative Relaying in MIMO-OFDM Systems
White Paper This paper extends this Wyner-Ziv bound to MIMO-OFDM, by applying results from Bayesian vector estimation and rate-distortion coding theory. An achievable rate was previously derived in... [11 Apr 2008]
Cooperative Detection and Communication in Wireless Sensor Networks
White Paper The paper shows that the detection problem can be cast as a rate distortion problem, and bound the region for Gaussian sources. This paper defines information theoretic problems in the cooperative... [10 Apr 2008]
Parameter Selection for WYNER-ZIV Coding of Laplacian Sources
White Paper This paper deals with optimal choice of parameters for practical Wyner-Ziv coding in such scenarios, using the same quantizer family as in the regular codec to cover a range of rate-distortion... [15 Feb 2008]
Dynamic Distortion Control for 3-D Embedded Wavelet Video Over Multiuser OFDM Networks
White Paper The paper considers the fairness among users and formulates the problem as minimizing the users' maximal distortion subject to power, rate, and subcarrier constraints. This paper proposes a system to... [24 Jan 2008]
Error Resilient Concurrent Video Streaming Over Wireless Mesh Networks
White Paper This paper then designs a route selection scheme using a joint rate/interference-distortion optimization framework to help the system optimally select concurrent streaming paths. This paper proposes a... [25 Aug 2007]
Capacity Deficit in Mobile Wireless Ad Hoc Networks Due to Geographic Routing Overheads
White Paper This paper formulates the minimum overhead problem as a rate-distortion problem. Overheads incurred by routing protocols diminish the capacity available for relaying useful data over a mobile wireless ad... [20 Jul 2007]
Rate-Distortion Optimized Streaming of Packetized Media
White Paper This paper addresses the problem of streaming packetized media over a lossy packet network in a rate-distortion optimized way. This paper shows that although the data units in a media presentation... [09 Jun 2007]
Off-Line Motion Description for Fast Video Stream Generation in MPEG-4 AVC/H.264
White Paper The rate-distortion optimal mode decision as well as motion estimation adopted in H.264 brings a big challenge to real-time encoding and transcoding duo to the high computation complexity. A... [09 Jun 2007]
