• Publications
  • Influence
Resource Allocation and Link Adaptation in LTE and LTE Advanced: A Tutorial
  • Gwanmo Ku, J. Walsh
  • Computer Science
  • IEEE Communications Surveys & Tutorials
  • 23 January 2015
TLDR
Resource allocation and link adaptation in Long-Term Evolution (LTE) and LTE Advanced are discussed with focus on the location and formatting of the pertinent reference and control signals, as well as the decisions they enable. Expand
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Low-complexity MIMO blind, adaptive channel shortening
TLDR
This paper addresses synchronization and complexity reduction issues that were not dealt with in previous work and provides extensions to and generalizations of the Multicarrier Equalization by Restoration of RedundancY algorithm. Expand
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  • PDF
Orthogonal Frequency Division Multiplexing
OFDM has several significant benefits over single carrier QAM modulation which has lead to its adoption in many of the modern wireless standards, including ADSL, European Digital Video Broadcast,Expand
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Low-complexity MIMO blind, adaptive channel shortening
TLDR
This paper addresses synchronization and complexity reduction issues that were not dealt with in previous work and provides extensions to and generalizations of the Multicarrier Equalization by Restoration of RedundancY algorithm. Expand
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  • 2
Turbo Decoding as Iterative Constrained Maximum-Likelihood Sequence Detection
TLDR
The turbo decoder was not originally introduced as a solution to an optimization problem, which has impeded attempts to explain its excellent performance. Expand
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  • 2
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A Recursive Construction of the Set of Binary Entropy Vectors and Related Algorithmic Inner Bounds for the Entropy Region
  • J. Walsh, S. Weber
  • Mathematics, Computer Science
  • IEEE Transactions on Information Theory
  • 1 October 2011
TLDR
A method for checking membership in the region of entropic vectors generated from N bits is presented. Expand
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Turbo Decoding as Constrained Optimization ∗
The turbo decoder was not originally introduced as a solution to an optimization problem. This has made explaining just why the turbo decoder performs as well as it does very difficult. Many authorsExpand
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Optimal Rate–Delay Tradeoffs and Delay Mitigating Codes for Multipath Routed and Network Coded Networks
TLDR
A framework is presented for deriving fundamental rate-delay tradeoffs that delay mitigating codes must have when utilized over multipath routed and random linear network coded networks. Expand
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Exploiting symmetry in computing polyhedral bounds on network coding rate regions
  • Jayant Apte, J. Walsh
  • Mathematics, Computer Science
  • International Symposium on Network Coding (NetCod…
  • 22 June 2015
TLDR
We propose an algorithm for computing polyhedral bounds on the rate regions of multi-source multi-sink network coding instances given the knowledge of symmetries of the instance as captured by the network symmetry group. Expand
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Optimality and Duality of the Turbo Decoder
TLDR
The near-optimal performance of the turbo decoder has been a source of intrigue among communications engineers and information theorists, given its ad hoc origins that were seemingly disconnected from optimization theory. Expand
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