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- Tao Tian, Christopher R. Jones, John D. Villasenor, Richard D. Wesel
- IEEE Transactions on Communications
- 2004

This letter explains the effect of graph connectivity on error-floor performance of low-density parity-check (LDPC) codes under message-passing decoding. A new metric, called extrinsic message degreeâ€¦ (More)

- Christos Komninakis, Christina Fragouli, Ali H. Sayed, Richard D. Wesel
- IEEE Trans. Signal Processing
- 2002

This paper addresses the problem of channel tracking and equalization for multi-input multi-output (MIMO) time-variant frequencyselective channels. These channels model the corrupting effects ofâ€¦ (More)

Low-Density Parity-Check (LDPC) codes are usually decoded by running an iterative belief-propagation, or message-passing, algorithm over the factor graph of the code. The traditional message-passingâ€¦ (More)

This work explains the relationship between cycles, stopping sets, and dependent columns of the parity check matrix of low-density parity-check (LDPC) codes. Furthermore, it discusses how theseâ€¦ (More)

- Aditya Ramamoorthy, Jun Shi, Richard D. Wesel
- IEEE Transactions on Information Theory
- 2005

We study the maximum flow possible between a single-source and multiple terminals in a weighted random graph (modeling a wired network) and a weighted random geometric graph (modeling an ad-hocâ€¦ (More)

- Andres I. Vila Casado, Miguel Griot, Richard D. Wesel
- IEEE Transactions on Communications
- 2010

Low-Density Parity-Check (LDPC) codes are usually decoded by running an iterative belief-propagation (BP), or message-passing, algorithm over the factor graph of the code. The traditionalâ€¦ (More)

- Qian Zhang, Pramod K. Varshney, Richard D. Wesel
- IEEE Trans. Information Theory
- 2002

We consider the problem of binary hypothesis testing using binary decisions from independent and identically distributed (i.i.d). sensors. Identical likelihood-ratio quantizers with threshold areâ€¦ (More)

- Christina Fragouli, Richard D. Wesel
- IEEE Trans. Communications
- 2001

This paper addresses turbo-encoder design for coding with high spectral efficiency using parallel concatenated trellis-coded modulation and symbol interleaving. The turbo-encoder design involves theâ€¦ (More)

- Thomas A. Courtade, Richard D. Wesel
- IEEE Transactions on Information Theory
- 2014

Consider a connected network of n nodes that all wish to recover k desired packets. Each node begins with a subset of the desired packets and exchanges coded packets with its neighbors. This paperâ€¦ (More)

- Pinar Ã–rmeci, Xueting Liu, Dennis Goeckel, Richard D. Wesel
- IEEE Trans. Communications
- 2001

Adaptive coded modulation is a powerful method for achieving a high spectral efficiency over fading channels. Recently proposed adaptive schemes have employed set-partitioned trelliscoded modulationâ€¦ (More)