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TIT
2010
112views Education» more  TIT 2010»
13 years 7 months ago
Asymmetric multilevel diversity coding and asymmetric Gaussian multiple descriptions
We consider the asymmetric multilevel diversity (A-MLD) coding problem, where a set of 2 K 1 information sources, ordered in a decreasing level of importance, is encoded into K me...
Soheil Mohajer, Chao Tian, Suhas N. Diggavi
CORR
2011
Springer
172views Education» more  CORR 2011»
13 years 7 months ago
Log-Convexity of Rate Region in 802.11e WLANs
—In this paper we establish the log-convexity of the rate region in 802.11 WLANs. This generalises previous results for Aloha networks and has immediate implications for optimisa...
Douglas J. Leith, Vijay G. Subramanian, Ken R. Duf...
TIT
2008
74views more  TIT 2008»
14 years 10 days ago
Rate Region of the Quadratic Gaussian Two-Encoder Source-Coding Problem
We determine the rate region of the quadratic Gaussian two-encoder source-coding problem. This rate region is achieved by a simple architecture that separates the analog and digita...
Aaron B. Wagner, Saurabha Tavildar, Pramod Viswana...
CORR
2006
Springer
85views Education» more  CORR 2006»
14 years 14 days ago
Interference Channels with Common Information
In this paper, the interference channel with common information (ICC), in which two senders need deliver not only private messages but also certain common messages to their corresp...
Jinhua Jiang, Yan Xin, Hari Krishna Garg
CORR
2008
Springer
96views Education» more  CORR 2008»
14 years 15 days ago
Approximating the Gaussian Multiple Description Rate Region Under Symmetric Distortion Constraints
We consider multiple description (MD) coding for the Gaussian source with K descriptions under the symmetric meansquared error (MSE) distortion constraints, and provide an approxim...
Chao Tian, Soheil Mohajer, Suhas N. Diggavi
CORR
2008
Springer
141views Education» more  CORR 2008»
14 years 15 days ago
Distributed Source Coding using Abelian Group Codes
In this work, we consider a distributed source coding problem with a joint distortion criterion depending on the sources and the reconstruction. This includes as a special case the...
Dinesh Krithivasan, S. Sandeep Pradhan
EURONGI
2006
Springer
14 years 4 months ago
Performance Analysis of Wireless Multihop Data Networks
We consider wireless multihop data networks with random multi-access mechanisms at the MAC layer. In general, our aim is to study the performance as perceived by users in a dynamic...
Nidhi Hegde, Alexandre Proutiére
GLOBECOM
2006
IEEE
14 years 6 months ago
Packet and Flow Level Performance of Wireless Multihop Data Networks
— We consider wireless multihop data networks with random multi-access mechanisms at the MAC layer. Our aim is to study the performance as perceived by users in a dynamic setting...
Nidhi Hegde, Alexandre Proutiere
INFOCOM
2007
IEEE
14 years 6 months ago
Network Coding in a Multicast Switch
— We consider the problem of serving multicast flows in a crossbar switch. We show that linear network coding across packets of a flow can sustain traffic patterns that cannot...
Jay Kumar Sundararajan, Muriel Médard, MinJ...
INFOCOM
2009
IEEE
14 years 7 months ago
Fast Algorithms and Performance Bounds for Sum Rate Maximization in Wireless Networks
Abstract— Sum rate maximization by power control is an important, challenging, and extensively studied problem in wireless networks. It is a nonconvex optimization problem and ac...
Chee-Wei Tan, Mung Chiang, R. Srikant